OCR Text |
Show 1871.] MR. G. S. BRADY ON EUROPEAN CYPRIDINID/E. 293 triangular densely setose process. The vermicular appendage* abdominal lamina are precisely as in the female. Hab. Greenland (_? & $ ), Shetland (2), Norway, North Sea off Northumberland coast ( $ ), Bay of Biscay ( 6* ). I think there can be little doubt, from anatomical characters taken together with the agreement in shell-form, that Fischer's species is simply the male of the better-known form; the exactly similar spinous armature of the vermicular appendage is very striking, so large a number as twenty-eight or thirty spines being met with, as I believe, in no other instance. 4. BRADYCINETUS MACANDREI, Baird, sp. Cypridina macandrei, Baird, 1850. Bradycinetus macandrei, Brady, 1868. Hab. North Atlantic, west of Scotland. 5. BRADYCINETUS LILLJEBORGII, G. O. Sars. Hab. Norway, North Atlantic. 6. PHILOMEDES INTERPUNCTA, Baird, sp. (Plate XXVI. figs. 1-5.) Cypridina interpuncta, <_*, Baird, 1850. Philomedes longicornis, <_*, Lilljeborg, 1853; G. O. Sars, 1865; ?$, Norman, 1861. Philomedes interpuncta, <_*, Brady, 1868. Female. Carapace much more rounded and more tumid than that of the male, and rather smaller; seen from the side subelliptical, highest in the middle ; superior and inferior margins both strongly convex; posterior extremity obliquely truncate, and bearing at the angles two distinct and sharp backwardly projecting convergent spines ; height equal to two-thirds of the length. Seen from above regularly ovate, widest in the middle; width equal to about half the length ; mucronate behind, obtusely acuminate in front. Superior antennae short and stout; setae short and subequal; natatory branch of the inferior antenna having its setae exceedingly short, secondary branch indistinctly biarticulate, the first joint bearing three setae (one of which is of moderate length and plumose) on its outer margin, second joint having one marginal and two very minute terminal setae. Length j1^ inch. Hab. Norway, west coasts of Scotland and Ireland, Shetland, Northumberland coast, Plymouth Sound, Channel Islands, Fosse de Cap Breton. The only places where the female has been found are Cap Breton and Loch Long in Scotland, in the last of which localities both sexes were dredged in considerable numbers, at a depth of 4-10 fathoms, by my friend Mr. D. Robertson. The Scottish specimens are smaller than those from the Bay of Biscay, but in other respects present the same characters. * The term " oviferous foot" seems scarcely applicable to this limb, as it exists in the male in precisely the same degree of development as in the female. |