K0NGL. SV. VET. AKADEMIENS HANDLINGAK. BAND. 22. N:0 7. 341 



Phroniminw, J. D. DANA. C. Bovallius. 1887. "Systematical list of the Amphi- 



poda Hyperiidea». Bih. t. K. 

 Sv. Vet. Ak. Handl. Bd. 11. 

 N:o 16, p. 24. 



The name Phroniminae for a subfamily including Phronima and Primno, was 

 used as early as in 1852 by Dana, who placed it by the side of the subfamilies Phrosi- 

 nince and Phorcince, in the family Phronimidae. 



He gave the following diagnosis of Phroniminae: 



"Abdomen versus basin sat gracile. Pedes 5ti magna manu didactyla vel monodactyla 

 confecti, 3tii, 4ti extremitate graciles, non prehensiles.» 



Spence Bate in 1862 retained the first two subfamilies as constituting the family 

 Phronimidce, but changed the names to Phronimides and Phrosinides, without giving any 

 reasons for the change. He rightly transferred Primno from the former to the latter 

 subfamily. 



In 1868 Spence Bate and West wood retained the same division of the family. 



In 1877 Streets recorded the family with the two subfamilies Phronimince and 

 Phrosinince. 



In 1879 Claus gave the Phronimidae with the same two subfamilies, Phroni- 

 minae containing the four genera Phronima, Phronimella, Parajphronima and Phro- 

 nimopsis. 



In 1885 Carus and in 1886 Gerstaecker recorded the same two subfamilies as 

 Claus had given, with exactly the same limitation. 



In 1887 I removed Phrosinince from Phronimidae, instead adding the new sub- 

 family Dairellince (see above p. 331). 



The two genera Phronima, Latreille, and Phronimella, Claus, thus constitut- 

 ing the subfamily Phroniminae, are easily distinguished from one another by the form 

 of the fifth pair of peraeopoda and of the second pair of uropoda. 



A. The carpus of the fifth pair of perasopoda is thick and broadly dilated, with the 



lower front corner strongly produced; the carpus forms together with the 

 metacarpus a perfect subcheliform hand. The second pair of uropoda are well 

 developed 1. Phronima. 



B. The carpus of the fifth pair of peraeopoda is thin, long, and narrow, and is only 



feebly dilated at the apex, with the lower hind corner not produced; the carpus 

 forms together with the metacarpus an imperfect folding hand. The second 

 pair of uropoda are more or less rudimentary in the male and entirely wanting 

 in the female 2. Phrouimella. 



