418 Dr. W. T. Caiman on Macrurous Crustacea 



The evidence given below as to the late appearance of 

 certain gills in Pasiphcea might, perhaps, suggest that the 

 apparent absence of podobranchs in our specimen was merely 

 a character of immaturity, were it not that Smith's much 

 larger specimens, with vv hich it agrees in this respect, appear 

 to have been quite mature. All that can be said at present 

 is that our specimen confirms the original account of the 

 gill-formula of Amalopenmis and leaves undecided the 

 question of its identity with Gennadas. 



Distribution. A. elegans is recorded by Smith from various 

 localities off the east coast of the United States at depths of 

 372-1632 fathoms ; by Hansen from West Greenland (from 

 stomach of a fish) ; and by Ortmann from the Sargasso Sea, 

 1300-1500 m. (closing tow-net), and south of the Cape- Verde 

 Islands, 0-400 m. (vertical net). G. parvus was obtained by 

 the ^Challenger' at numerous stations in the Atlantic and 

 Pacific Oceans at depths of from 315-3050 fathoms, and is 

 recorded by Alcock from the Bay of Bengal and the Arabian 

 Sea at 738-1043 fathoms. G. intermedius was found by the 

 'Challenger' at the surface and at a depth of 1850 fathoms 

 in the Atlantic. 



Family Pasiphasidaa. 

 PasiphcBa sp. 



Locality. Lat. 52° 27'-6 N., long. 15° 40' W. Net no. 4 k. 

 1670 fath. 20/11/98. One specimen. 



The total length of the specimen is about 17 millim., of 

 which the carapace occupies rather more than one third. 

 The body is only slightly compressed. The rostrum has the 

 form of a forward ly directed, compressed, triangular tooth 

 extending to the middle of the length of the eye-stalks ; it is 

 continued backwards by a ridge on the dorsal surface of the 

 carapace, rising slightly to form a low, obtusely triangular 

 prominence at about one third of the length of the carapace 

 from the front, and becoming obsolete posteriorly. The 

 sides of the carapace present several obscurely marked ridges 

 and impressed lines, a horizontal ridge running backwards 

 along the branchial region being the most conspicuous. The 

 sixth abdominal somite is about twice as long as the fifth. 

 The telson is transversely truncated at the tip and is shorter 

 than the exopod and subequal to the endopod of the uropods. 

 The eyes are small, not wider than their stalks, the corneal 

 surface obliquely placed, faintly pigmented, and with a blunt 

 tubercle above on the inner side. The mandibles have no 

 palp. The other mouth-parts agree closely with those of 



