•4 



The uropods (text-fig. 2 c.) are (excluding the termhial spines) about twice as long as 

 the last somite. The jaeduncle measures, along its outer margin, about one-third of the endopod, 

 and the exopod about one-quarter. The endopod has two spines internal to the base of the 

 terminal spine, but none on the inner edge which is rather coarsely serrated. The terminal 

 spines are slender, that of the exopod reaching to the end of the endopod and the spine of 

 the latter is at least half as long as the ramus which bears it. 



The pigmentation of this species is peculiar and characteristic. The greater part of the 

 carapace is covered by large black chromatophores, arranged as shown in the figure and there 

 are numerous, more deeply seated chromatophores in the jaosterior thoracic and abdominal regions. 



Occurrence. Station 2>7- Two males. Station 40. One male. 



Remarks. This species is allied to JV. suJwiii with which it agrees in the absence of 

 crests or prominences on the abdominal somites. It diff'ers from that species in the shorter 

 abdomen, the much shorter uropods, the much longer last pair of legs as well as in the 

 characteristic colouration. 



4. Nannastacus brachydactyhis n. sp. (Text-fig. 3, a — e). 

 Description of adult Male. Total length 1,6 mm. 



c. 



Fig. 3- Nannastactis hrachydaclyhis n. sp., adult male. 



a. From the side. /). From above, c. First leg. d. Fifth leg. 



c. Last somite and Uropod. 



Carapace about two-fifths of total length, somewhat depressed and not quite twice as 

 long as broad. The dorsal surface is flattened posteriorly, sloping downwards towards the eyes 



