132 STALK-EYED CRUSTACEA. 



carin£B ou 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 antenna! 

 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 lai-ge as those of P. gracilis Smith (much exceeding the 

 rostrum in length), but they are nearly colorless and unfaceted, as in P. ahi/ssi 

 and P. baiei. 



The color in life is shown on Plate D. 



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



oms. 2 specimens. 



' 2 " 



1 



' 4 << 



' 5 " 



1 



( 2 " 



4 



i 2 " 



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

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

 forms are geographical races of one widely distributed species. 



SCLEROCRANGON G. 0. Sars. 

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



Sclerocrangon atrox Fax. 

 Plate XXXV. 



Bull. Mus. 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 ; 



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

 ority, Ortmann's or my own. Ortmanu's memoir was received in Camhridgc, Oct. 4, 189.3. My paper in 

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



