PONTOPHILUS OCCIDENTALIS. 131 
of carapace, including rostrum, 30 mm.; length of rostrum, 12 mm.; length 
of telson, 16 mm. 
Station 3424. 676 fathoms. 2 males, 3 fem. (1 ovig.). 
“3425. +680 é 1 male. 
The males (all of which are much smaller than the females) differ from 
the other sex in having the various spines longer, the abdominal pleure 
narrower and produced to longer spinous points. 
The egg measures 1.5 x 1.3 mm. 
The number and arrangement of the gills are the same as in the type 
species of the genus, P. echinata Dana, as shown by the following formula : 
Somites, Vids Wii Ie | 3c San See SaeN Saye 
Pleurobranchie, 0 0 0 i$ 1 1 1 i 5 
Arthrobranchia, 0 0 0 0 0 0 0 0= 0 
Podobranchie, 0 0 0 0 0 0 0 0= 0 
Epipods, 1 1 0 0 0 0 0 o— (2) 
5+ (2) 
Paracrangon hystrix A. M. Edw.* is not a Paracrangon, The second pair of 
legs (which are non-chelate) are not completely suppressed, and there are 
two arthrobranchiz on each side of the ninth (third maxillipedal) somite. 
Although differing much in aspect from the typical species of Sadbinea, it 
agrees in the essential structural features, and is correctly referred to that 
genus by Professor 8. I. Smith. It is identical with the species afterward 
described by Smith under the name of Sabinea princeps.t 
Paracrangon echinata Dana, the only other species of Paracrangon known, 
has been found at Vancouver's Island, Puget’s Sound, California, and Japan. 
PONTOPHILUS Leacu. 
Malacostr. Podophthal. Brit., Plate XXX VII. A., 1816 (?). 
Pontophilus occidentalis Fax. 
Plate D., Fig. 2-2". 
Bull. Mus. Comp. Zodl., XXTV. 200, 1893. 
Closely allied to P. abyssi Smith, and P. bate’ Fax.t From the former it 
differs in having a shorter rostrum, larger eyes, and more strongly developed 
* Ann. Sci. Nat., Zool., 6¢™* Sér., Vol. XI., No. 4, p. 6, 1881. 
+ Bull. Mus. Comp. Zodl., X. 38, 1882. 
+ Pontophilus batei Fax., Bull. Mus. Comp. Zodl., XXIV. 200, 1893, = Pontophilus gracilis Bate 
(nom. preoc.). Ortmann (Decapoden u. Schizopoden der Plankton-Expedition, p. 49, 1593) also has pro- 
