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 as the 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.; carapace, 30 mm.; telson, 14 mm.; antennal scale, 11 mm. 



Station 3371. 770 flithoms. 1 specimen. 



In 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 

 soft integument, small eye, and the reduction of the rostrum. 



Notostomus westergreni, .«p. nov. 



Similar to N. patentissimm Bate, with which it agrees in nearly all the de- 

 tails of carinas, etc., but it diS'ers 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 PASIPHAEIID^. 



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 diff'er 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 



