132 



STALK-EYED CRUSTACEA 



-I 



cavinsG on the carapace. From the latter it also difFers in its shorter rostrum 

 armed with two pairs of lateral teeth ; in the presence of a sharp spine on 

 the sternum between the second pair of legs ; in the length of the antennal 

 scale, which is equal to the distance from the tip of the rostrum to the 

 cardiac spine ; in the shortness of the second pair of legs, which reach only 

 half way to the distal end of the merus of the first pair ; and in the absence 

 of the spine on the outer margin of the merus of the first pair of legs. 



The eyes are as large as those of P. gracilis Smith (much exceeding the 

 rostrum in length), but they are nearly colorless and unfaceted; as in P. ahysd 

 and P. latei. 



The color in life is shown on Plate D. 



Length 73 mm. ; length of carapace, 21 ram. 

 Station 3361. 1471 fathoms. 2 specimens. 



i6 



a 



u 



a 



6i 



a 



<c 



a 



u 



3363. 



978 



3366. 1067 



3381. 1772 



3382. 1793 

 392. 1270 



3398. 1573 



3413. 1360 



3414. 2232 



3415. 1879 



a 



u 



6C 



a 



6i 



U 



u 



u 



a 



2 

 1 

 4 

 5 

 1 



2 



4 

 1 



2 



a 



u 



a 



u 



a 



u 



ii 



iS 



a 



4 



This is an abyssal species, like the closely related P. abym and P. laid 

 It is very probable that future explorations will prove that all these three 

 forms are geograpliical races of one widely distributed species. 



SCLEROCRANGON G. 0. Saks. 



Norske Nordhavs-Exped., Crustacea, 1. 14, 1885. 



Sclerocrangon atrox Fax. 



Plate XXXV. 



Bull. Mas. Comp. Zool., XXIV. 199, 1893. 



Rostrum large, with a prominent keel below, which is produced anteriorly 

 into a prominent tooth reaching as far forward as the tip of the rostrum j 



posed a new name, PontopMlus chaUengeri, for Bate's species. I do not know which name has the pri- 

 ority, Ortmann's or my own, Ortraann's memoir was received in Cambridge, Oct. 4, 1893. My paper in 

 Bull. Mus. Comp. Zool., Vol. XXIV., was pubhshed, and copies were distributed, Aug. 19, 1893. 



t ■ 

 I 



