48 



made by the German Southpolar Expedition, October 31"' 1901, when numerous specimens of 

 IIopl. Grvnaldii Cout. were caught north' of Tristan da Cunha, in the night, in only 5,4 fathoms! 



Key to the species of the genus Ilop/op/iorus H. M.-Hdw. 



rt, Third, fourth and fifth abdominal segments terminating in a spine. 

 (5, Inner margin of antennal scale simple. A tooth at the postero- 

 lateral angle of the carapace. 

 Tj Rostrum about as long as the antennal scale, often a little 

 shorter; spine of y^ tergum, in adult specimens, hardly 

 longer than that of 5'''; lower angle of the pleuron of the 



I*' abdominal somite not produced to form a tooth . . typus H. M.-Edw. 

 f„ Rostrum as long as up to I'/j-times the rest of the carapace; 

 lower angle of the pleuron of the 1=*' abdominal somite, in 

 the male, usually jjroduced to form a tooth. 

 (/[ .Spines of 3'''' and ^^^ terga subequal lo7tgirosiris Bate. 



(C. Si'ENCE Bate, Challenger Crustacea Macrura, 1888, p. 760, Plate CXX VII, 

 fig. 2). 



d. Spine of 3'''' abdominal tergum, in adult specimens, very 



much longer than that of 5'^ gracilirostris A. M.-Edw. 



{.\. Milne-Kd\v.\rds, in: Anna!. So. Nat., Zool. 1881, p. 6 and in: Recueil 

 de Figures de Crustaccs nouveaux ou peu connus, 1883, PI. 29). 



b„ Inner margin of antennal scale with a barbed hook anteriorly. 



Rostrum i^i-times as long as the rest of the carapace. No 



tooth at the posterolateral angle of the carapace. Spine of 



,rd tergum very much longer than those of 4''' and s'l^ . . Griinaldii Cout. 



(H. Coutikre, in: Bulletin Mus. Oceanogr. de Monaco, N" 48, 1905, p. i). 



a^ Second, third and fourth abdominal somites terminating in a spine. 



No tooth at the postero-lateral angle of the carapace .... spinicanda A. M.-Edw. 

 (A. Milne-Edwards, Recueil de Figures de Crustaces nouveaux ou peu 

 connus, 1883, PI. 29). 



foliacciis M. J. Rathbun. 

 (M. J. Rathbun, in: U. S. Fish Commission Bulletin for 1903, Part. Ill, 

 Wash. 1906, p. 922, PI. XX, fig. 8). 



I. Hoplophortis typiis H. M.-Edw. 



Oplophorus typus H. Milne-Edwards, Hist. Nat. Crust. II, 1837, p. 424, PI. 25 bis, fig. 6, 7. 

 Oplophoriis typits C. Spence Bate, Challenger Crust. Macrura, 1888, p. 762, PI. CXX VII, fig. 1 — iz. 

 ? Oplophorus brevirostris C. Spence Bate, 1. c, p. 766, PI. CXX\'II, fig. 3. 



Stat. 17. March 17. 7°28'.5S., ii5°28'E. Bali Sea. 1060 m. Bottom fine grey mud. i male. 

 Stat. 46a. April 7. 8°o'.5 S., ii8°34'.7E. Flores Sea. 1600 m. Bottom mud. 2 females, one 



of which is ova-bearing. 

 Stat. 211. September 25. 5°4o'.7S., I20°45'.5 E. East of Salcyer. 1158 m. Coarse grey mud, 



supcriicial layer more liquid and brown, i female. 



