KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 7. 



385 



The seventh pair' are a little longer than the sixth. The femur is about a fourth 

 part longer than that in the sixth. 



The urus is shorter than the last pleonal segment. The first segment is only a 

 little longer than the last coalesced, which is considerably broader than long. 



The uropoda (PI. XVI, fig. 50). The first pair reach a little beyond the middle of 

 the outer ramus in the third pair; the peduncle is much longer than the inner ramus, 

 but not twice as long; the outer ramus is a little shorter than the inner. The second 

 pair reach a trifle beyond the apex of the peduncle in the third pair; the peduncle is 

 three times as long as the inner ramus, but not twice as long as the outer; the inner 

 ramus is scarcely more than half as long as the outer. The peduncle of the third pair 

 is not fully twice as long as the inner ramus; the outer ramus is a little shorter than 

 the inner. 



The telson is broadly rounded, and is more than half as broad as the hind end of 

 the last coalesced ural segment. 



7. PHRONIMA TENELLA, TH. STEBBING, 1888. 



Diagn. Processus tibialis pedum percei secundi paris dimidio stipitis carpi multo brevior. Pedes quinti 

 paris pedibus quarti paris breviores; carpus longior quani latior; processus carpalis mini- 

 mus, dentifoi'mis, tuberculo marginis inferioris multo brevior; tuberculus bidentatus; meta- 

 carpus tuberculo carens. Femur pedum septimi paris latum, elongato-ovatus, femore pedum 

 sexti paris tertia parte longius. Latera segmentorum plei post acuta, non producta. Ramus 

 internus pedum uri secundi paris ramo externo brevior. 



The tibial process of the second pair of perceopoda is much shorter than half the stem of 

 the carpus. The fifth pair are shorter than the fourth; the carpus is longer than broad; 

 the carpal process is very small, tooth-like, and much shorter than the tubercle on the 

 under margin of the joint; the tubercle is two-pointed; the metacarpus wants a tubercle. 

 The femur of the seventh pair is broad, elongate-ovate, and a third part longer than that 

 of the sixth pair. The lateral parts of the pleonal segments are sharp-pointed behind, but 

 not produced. The inner ramus of the second pair of uropoda is shorter than the outer. 



Colour. ? 



Length. "Without the antennae, rather more than two-fifths of an inch.» (Stebbing.) 



Hab. »Mid Pacific, Lat. 3° 48' S., Long. 152° 56' W.» (Stebbing.) 



Syn. 1888. Phronima tenella, TH. STEBBING. 



"Report on the Amphipoda». Voy. of H. 

 M. S. Challenger. Zoology. Vol. 29, 

 p. 1354, pi. 161, A. 



As I did not succeed in finding any specimen of this species in the collections at my 

 disposal, I refer the reader to the description given by Stebbing, 1. c, p. 1354 — 1356, pi. 161, A. 



K. Sv. Vet. Akad. Handl. Band. 22. N:o 7. 



49 



