PLATE IX.

ILLUSTRATIVE OF A PAPER, BY J. R. KINAHAN, M. B., ON DUBLIN

CRUSTACEA.

Fig.

1. Xantho rivulosa (Kroyer).

2. Hippolyte pusiola (Kroyer). Spines over eye omitted in figure. 2A. One of the second pair of legs of ditto.

2B. Carapace.

2c. Termination of median plate of tail.

3. Portunus carcinoides, jun. (Kinahan), size of life.

3A. Carapace of ditto.

3B. Terminal joints of fifth pair of legs, enlarged.

3c. Hand, terminating in two well-marked carinæ on the upper sides, the inner terminating in a very minute outward tubercle; enlarged.

4.

5.

Zoe of Pirimela denticulata, taken from life.

Ditto,

ditto,

omitted in figure.

from dead specimen; spines over eye

6. Back view of termination of abdomen, enlarged.

Vide pages 62, 80, 153.

Fig.

PLATE X.

ILLUSTRATIVE OF A PAPER, BY J. R. KINAHAN, M. B., ON DUBLIN CRUSTACEA.

1. Hippolyte varians, normal type; rostrum nearly straight; apex bidentate, directed upwards, upper tooth shortest; below, two teeth, the anterior much posterior to the upper tooth of apex; proportional frequency of occurrence, 63 per cent.

1A. Peduncle of external antennæ of ditto.

1в. Median plate of tail of ditto.

2. Rostrum straight; apex tridentate, teeth directed forwards, upper and lower teeth nearly equal in length; below, one tooth only; proportional frequency, 25 per cent.

3. Rostrum strongly curved upwards, scimitar-shaped; apex tridentate; upper tooth slightly longer than lower; below, a single tooth; proportion, 8 per cent. N. B. The whole animal is much slenderer than the normal type: query, a species.

4. Rostrum straight; apex broadly truncated, directed forwards, quadridentate; in plate wrongly represented as tridentate; apical teeth very minute; below, two teeth; proportion, 2 per cent. 6. Rostrum straight; apex acuminate, simple; in plate wrongly represented as bidentate; directed upwards; rostrum with two teeth below. One specimen out of 300 examined.

5. Rostrum straight; apex bifid; rostrum with three teeth below, viz., one beneath apex, and two closely approximated in the broadest One specimen.

portion of the rostrum.

7, 8. Rostrum of H. Cranchii.

omitted.

In Fig. 8, the two lateral spines

9, 10. Ditto, H. pusiola (Kroyer). Tooth over eye omitted in Plate. 11, 12, 13, 14. Rostrum of varieties of Palamon squillæ.

Tide page 160.

PLATE X.*

ILLUSTRATIVE OF A PAPER, BY A. H. HALIDAY, A. M., F. L. S., ON A NEW GENUS AND SPECIES OF THE FAMILY DIAPRIDE.

Fig.

1. LABOLIPS INNUPTA fem. The crossed lines beneath show the natural length of the body, and the spread of the wings.

2. Head, from above.

3. Same, from beneath.

4. Same, from the side.

5. Epistoma, with Labrum.

6. Mandible, from within.

7. Peristoma, basal piece, with Labium (a), and Maxillæ (b).

8. Labial palpus.

9. Antenna.

10. Upper and under wing.

11. Hamuli of under wing.

12. Fore tibia, with Spur and Metatarsus.

13. Last external segment of abdomen, with Ovipositor and its Fulcra,

in position.

14. Tips of valves of Vagina.

15. Tip of tube, formed by the Ovipositor and its vagina, seen in the

direction of its axis.

16. Calamus, between the valves of Vagina parted.

17. Spiculum, with its Fulcrum.

18. Intestinal canal, including Esophagus (a), Rectum (r), and Malpighian vessels (m).

19. Ovaries with the separate Oviducts, and the common Excretory canal.

20. Egg, or Germinal vesicle, extracted.

Vide page 166.

20

VOL. IV.

PLATE XI.

ILLUSTRATIVE OF A PAPER, BY A. H. HALIDAY, A. M., F. L. S., ON SOME REMAINING BLANKS IN THE NATURAL HISTORY OF THE NATIVE DIPTERA.

Fig.

1. OXYCERA MORRISII (?) Larva, from above.

2. Head, from above.

3. Dorsal bristle, and group of Vesicles.

4. Last two segments from beneath, showing the hooks of the penul timate segment.

5. NEMOTELUS ULIGINOSUS Pupa case, from above.

6. Larva of same, from above.

7. Two intermediate segments, from beneath.

8. Last segment, from above.

9. Same, from beneath.

10. Posterior Respiratory cleft.

11. Head and Prothorax, from the side.

12. Prothoracic spiracle, from the inside.

13. Lateral spiracle of abdomen, in position.

14. Head, from above.

15. Antenna.

16. Terminal joint, and bristle of same.

17. Epistoma from the side with spiny Labrum.

18. Mandible. 19. Maxillæ. 20. Labium (* the base or insertion).

21. Black elliptic plate, and root of bristle, in position.

22. Intestinal Canal, in position. 23. Same, unrolled; including Mouth (a), Crop (c), Colon (0), Anal segment (z), Malpighian vessels (m), and their Common duct (n).

24. ANTHOMYIA RIPARIA.

25. Same from the side.

26. Reticulations of case.

Pupa case, from above.

27. Larva of same, from the side, extended. 28. Head and Prothorax, from the side.

29. Posterior end, from above.

30. Same, from beneath.

31. Dorsal horn, showing the muricated base, and the position of the Spiracle at the tip.

32. Tip of a Ventral horn, or False leg. ·

33. Anal tubercle.

34. Muricated lateral edge of a posterior ventral incisure.

Vide page 177.

PLATE XII.

ILLUSTRATIVE OF A PAPER, BY W. H. HARVEY, M. D., F. L. S., ON NEW BRITISH ALGE.

Fig.

1A. Leathesia crispa, growing on Chondrus crispus, the natural size. 2A. Part of a filament, with its curled apical ramelli, magnified. 3A. Ramellus and spore, more highly magnified.

1B. Elachista Grevillii growing on Cladophora rupestris, the natural size. 2B. Portion of the tuft magnified.

3B. Apex and base of a filament more highly magnified.

Vide page 201.