208 BULLETIN OF THE 
spine on the external border, near the distal end. The third maxillipeds are 
robust ; they reach forward far beyond the end of the antennal scales; their 
terminal segment is triangular in cross section, The first pair of legs are also 
robust, about equal in length to the third maxillipeds, and their chela is strong, 
with fingers about equal to the hand in length. The second pair of legs are 
longer but much weaker than the first pair, the carpus and propodus much 
elongated, and the fingers not more than a third as long asthe hand. The 
ischium and merus of both the first and the second pair are flattened, and the 
same compression is seen in the three following pairs of legs, which have 
the form and proportions characteristic of the genus. The inner branches of 
the swimmerets are about the length of the telson, while the outer branches 
are rather longer. 
Length, 70 mm.; cdrapace, 30 mm.; telson, 14 mm.; antennal scale, 11 mm. 
Station 3371. 770 fathoms. 1 specimen, 
Tn this specimen the integument is soft and membranaceous, and the cara- 
pace is so collapsed that it is difficult to restore its true outline. In several 
respects this species shows an approach to the genus Hymenodora, e. g. the 
soit integument, small eye, and the reductibn of the rostrum. 
Notostomus westergreni, sp. nov. 
Similar to N. patentissimus Bate, with which it agrees in nearly all the de- 
tails of carine, etc., but it differs much from Bate’s species in its general form 
and proportions, the carapace being longer in proportion to its height, and less 
convex along the dorsal line than it is in N. patentissimus. The rostrum, be- 
sides, is armed with many more spines (at least twelve) on its inferior margin. 
Bate says that in N. patentissimus the antennal carina terminates in the pos- 
terior margin of the carapace, where it is confluent with the lowermost, sub- 
marginal carina. This is not the case in N. westergreni. 
Length, 127 mm.; length of carapace, including rostrum, 61 mm.; height of 
carapace, 31 mm. 
Station 3399. 1740 fathoms. 1 male. 
Family PASIPHAEIIDZ. 
Pasiphaeia cristata americana, subsp. nov. 
This form is closely allied to P. cristata Bate, dredged by the “ Challenger” 
in 315 fathoms, near the Fiji Islands. The ** Albatross” specimens differ in 
some respects from the Fiji specimen. "They may be considered a geographi- 
cal race of the same species. 
On comparing the two forms it appears that the carapace of the “ Albatross” 
specimens is considerably longer in proportion to the length of the whole body 
