132 STALK-EYED CRUSTACEA. 
carinee 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. abysst 
and P. batet. 
The color in life is shown on Plate D. 
Length 73 mm.; length of carapace, 21 mm. 
Station 3361. 1471 fathoms. 2 specimens. 
Cy aD Or: moO. ie 2 < 
7 S06. 2 kOG 7 oar 1 e 
oy acts yell Een ifr «s 4 ae 
Se egae2., L793 me 5 ss 
ears ellie 2G 1 <s 
tee BOO 8. LOine “ 2 es 
“ --8413.. 1860 zs 4 % 
Sen MOA IAS 2252 bs 1 = 
Ce ea lO eleang ie 2 
This is an abyssal species, like the closely related P. abyssi and P. batei. 
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, I. 14, 1885. 
Sclerocrangon atrox Fax. 
Plate XXX V. 
Bull. Mus. Comp. Zoél., 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 challengeri, for Bate’s species. I do not know which name has the pri- 
ority, Ortmann’s or my own. Ortmann’s memoir was received in Cambridge, Oct. 4, 1893. My paper in 
Bull. Mus. Comp. Zodl., Vol. XXIV., was published, and copies were distributed, Aug. 19, 1893. 
