KONGL. SV. VKT. AKADEMIENS HANDLINGAR. BAND. 22. N:0 7. 33 



4. PARAPHRONIMA CLYPEATA, C. BOVALLTIIS, 188.,. 



Pl. U, Hg. 16—40. 



Diagli. Caput altius quam longius, non duplo altius segmento primo perasi, nec segmenta quattuor 

 prima peraäi longitudine .Bquans. Pedes percei ciirti, robusti, feirioribus dilatatis. Femur 

 pedum pi-imi paris ai-ticulis sequentibus conjnnctis haud longius. Metacarpus pediim tertii 

 ac quarti pariuni metacarpo pedum quinti ac sexti parium longior. Pede.s quinti pari.s, 

 quam peneon breviores. Pedes septinii paris pedibus sexti paris paullo breviores. Latitudo 

 peduuculi pedum uri ultimi paris longitudinem ramorum a^quans vel superans. Telson 

 parvum, obtuse triangulare. 



The head is deeper than long, not twice as deep as tlie first perajonal segment, nor as long 

 as the first four perajonal segments together. The 2^f'>'(t;opoda are short, robust, with dilated 

 femora. The femur of the first pair is scarcely longer than all the following joints to- 

 gether. The metacarpus of the third and fourth pairs is longer than that of the fifth and 

 sixth. The fifth pair are shorter, than the perteon. The seventh pair are a little shorter 

 than the sixth. The breadth of the peduncle of the last pair of uropoda equals or is 

 greater than the length of the rami. The telson is small, obtusely triangulär. 



Colour. Light yellow to brown. 



Length. d' 6 — 14 mm., $ 6 — 15 mm. 



Hab. The northern temperate region of the Atlantic (D. M.; F. M.; K. M.; P. M.; S. M.; U. M.); 

 the tropical region of the Pacific (S. M.). 



Syn. 1885. Paraphromma clypeata, C. BOVALLIUS. »On some forgotten genera amoiig the Amphi- 



podous Crustacea.» Bih. t. K. Sv. Vet. Ak. 

 Hancll. Bd. 10. N:o 14, p. 11, fig. 3. 

 » 1) » 1887 . "Systematical list of the Amphipoda Hyperiidea.» 



Bih. t. K. Sv. Vet. Ak. Haiidl. Bd. 11. N:o 

 16, p. 13. 

 1887. » pectinata » 1. c. p. 13. 



Paraphronima clypeata, it may be consiclered a species or a vax'iety, has some 

 characteristics in common with P. gracilis and others with P. crassipes. The large head 

 and the pectinate ramns of the first pair of uropoda in the male point to the former, the 

 robust legs and the length of the seventh pair of pera^opoda to the latter. 



The integument of the body is thick and härd; the body is more compressed than 

 in the other species. 



The head is rounded as in Paraphronima crassipes but the under margin is nearly 

 straight; it is about the half deeper than the iir.st perseonal segment, and almost as long 

 as deep. It is scarcely longer than the first three pera^onal segments together. 



The ei^es are similar to those of P. crassipes, but tliere is some appearance of a 

 division into a median and a lower portion. 



K. Sv. Vet. Ak. Handl. Baad. 22. Nio 7. O 



