| OCR Text |
Show 1878.] MR. E. J. MIERS O N T H E PEN^EID^E. 307 §§ The carina between the base of rostrum and posterior margin of the cephalothorax not sulcate, and often not reaching to the posterior margin. * Rostrum with the inferior margin dentate. (No lateral spines on last postabdominal segment.) 9-10 Rostrum -r--j-dentate. Terminal segment ending in a long spine. *7. P. setiferus, Linn. West Indies, east coast of North America. fi-7 Rostrum - dentate, not reaching beyond the antennal scale. Terminal segment acute. 8. P. monodon, Fabr. Indian and Australian Seas. 8-9 Rostrum very slender and styliform in its distal half, ---dentate and reaching slightly beyond the antennal scale. 9. P. indicus, M.-Edw. Indo-Malayan Seas; Panama ? ** Rostrum with the inferior margin entire. 1. Rostrum not reaching far beyond the end of the antennal scale. Rostrum ensiform, straight, 8-10-dentate above, the teeth extending along nearly the whole upper margin. Terminal postabdominal segment without lateral marginal spines. 10. P. monoceros, Fabr. Indo-Malayan Seas. Rostrum curved upward toward apex, 8-dentate above, dorsal carina reaching nearly to the posterior margin. Terminal segment as in P. monoceros. *11. P. curvirostris, Stimpson. Japan, Simoda. Rostrum robust, curved slightly upward, 8-9-dentate above, the last tooth situated on the dorsal carina at considerable distance from the preceding. Terminal segment with a pair of lateral spines. 12. P. membranaceus, Risso. Mediterranean, Madeira. Rostrum styliform at apex, nearly straight, 7-9-dentate above in its proximal half. Terminal segment without lateral marginal spines; 5th legs (in the female) rudimentary. 13. P. dobsoni, Miers. West Coast of India. Rostrum slender, styliform and produced at apex, 6-9-dentate above at its base. Terminal segment with prominent lateral marginal spines; 5th legs (in the male) long and slender, dactylus small. 14. P. styliferus, Edw. Rombay. 2. Rostrum reaching far beyond the end of the antennal scale. Rostrum 9-10-dentate above; the 3-4 last teeth placed upon the slender styliform distal half. Last postabdominal segment with lateral spines. *15. P. foliaceus, Risso. Mediterranean. Rostrum 6-dentate above, the styliform distal portion without teeth. Terminal segment without lateral spines. 16. P. kroyeri, Heller. Rrazil West Indies. b. Cephalothorax without any median dorsal ridge. (Rostrum entire below) Rostrum straight, dentate nearly to its apex; first tooth separated bv a 2 0* |
