728 MR. S. KEMP ON DECAPOD [J Vine 15, 



exception of these details the specimen agrees in every respect 

 with the French author's account. The petasma (PL LXXV. 

 fig. 2) is almost identical with the text-figure published in 1906. 



The presence of podobranchs on the first three pairs of pereio- 

 pods indicates that this form, like the four species already 

 described, is a true Gennadas. 



Amalopen^us elegans Smith. 



St. 45. Off the mouth of the Delaware R. 38° 34' N., 72° 10' W. 

 Trawl. 2500 fathoms. One male, 24 mm. 

 The solitary specimen, which is without trace of podobranchs 

 on the first three pereiopods, is in all respects typical of this 

 well known Atlantic species. 



Three of the specimens present in the collection have not been 

 determined : — 



St, 101. Off Sierra Leone (sub G, pm^vits Sp. Bate). 



This specimen, which is partially devoured by a parasitic worm, 

 is figured in the ' Challenger ' Report. Its condition is so bad 

 that any attempt at identification is out of the question. 



St. 220. N. of New Guinea (sub G. parvus Sp. Bate). 



A single female from the above station is easily recognized as 

 distinct from the two G. bouvieri occurring in the same haul. It 

 appears to represent an undescribed species, but it does not seem 

 advisable to attempt a description Avithout more abundant 

 material. 



St. ? Off Bermuda (sub G. internieditts Sp. Bate). 



The petasma of this small specimen, which was caught at the 

 svirface, does not appear to have assumed its adult form. 



The following list of references may be of value to future 

 workers at this group. So far as I am aware, it comprises all 

 species referred to Gennadas {sensu lato) which have not been 

 noticed in the present paper or in Bouvier's memoir : — 



Gennadas carinaius Smith. N.E. Atlantic and Arabian Sea. 



Smith (sub Benthesicijmus ? carinatiis)^ Rep. U.S. Fish Oomm. 



for 1882 (1884), p. 396, pi. x. figs. 6 & 7. 

 Alcock & Anderson, Journ. As. Soc. Bengal, Ixiii. 1894, p. 147, 

 Alcock, Desc. Oat. Indian Deep Sea Macrura, 1901, p, 46. 

 McGilchrist {G. curinatus ?), Ann. Mag. Nat. Hist., March 

 1905, p. 236. 

 Gennadas borealis Rathbun. Aleutian Is. 



Rathbun, Proc. U.S. Nat. Mus. xxiv. 1902, p. 887, 

 Rathbun, Harriman Alaska Exped. x. 1904, p. 147, figs. 

 88 & 89. 

 Gennadas propinquus Rathbun. Hawaiian Is. 



Rathbun, Bull. U.S. Fish Comm. for 1903 (1906), p. 907, 

 fig. 61. 



