OCR Text |
Show 1871.] MR. G. S. BRADY ON EUROPEAN CYPRIDINID/E. 295 is composed of one small joint, from the expanded base of which arise four short setae, from the apex one minute seta, and from the middle of the upper margin one of excessive length and plumose. The length of the secondary branch in the male is very great, equalling that of the primary branch. Hab. Fosse de Cap Breton (Bay of Biscay), 70 fathoms. 8. ASTEROPE ELLIPTICA, Fischer. Hab. Mediterranean. 9. ASTEROPE MARINE, Baird, sp. Cypridina marice, Baird, 1850. Cylindroleberis marice, Brady, 1868. Hab. Shetland, West of Scotland, Penzance, Channel Islands, Bay of Biscay. 10. ASTEROPE TERES, Norman, sp. Cypridina teres, Norman, 1861. Cylindroleberis teres, Brady, 1868. I am not disposed, without further proof, to indorse the opinion of G. O. Sars that this is the female of the foregoing species. It is indeed possible that such may be the case, and their occurrence in company (taken in the same gatherings) lends some probability to the supposition ; but I have already described, in my " Monograph of the Recent British Ostracoda," a form differing in anatomical structure very remarkably from the male A. marice, and differing, too, just in those parts where sexual distinctions would be likely to show themselves. I have not materials at hand to reinvestigate this subject; but the examples from which my descriptions were taken certainly bore a closer resemblance to the male A. marice than does A. teres. If, then, A. teres be the true female of marice, we must also have another and very closely allied species confused with the former. Further examination is requisite before pronouncing decidedly in the matter. 11. ASTEROPE ABYSSICOLA, G. 0. Sars. Hab. Norway. 12. ASTEROPE NORVEGICA, G. O. Sars. Hab. Norway. EXPLANATION OF THE PLATES. PLATE XXVI. Philomedes interpuncta. Fig. 1. Carapace of female, seen from left side. X 40. 2. Carapace of female, seen from above. X 40. 3. Superior antenna of female. X 84. 4. Inferior antenna of female: a, portion of basal joint; b, natatory branch; c, secondary branch. X 84. 5. Mandibular foot of female. X 84. |