328 CARL BOVALLIUS, AMPHIPODA HVPEEIIDEA. 1, 2. HYPERIID^. 



Phroniinopsis spinifera. 



the third. The femur is angularly bent, and is considerablj? shorter than the three follow- 

 ing joiiits with the carpal process. The carpus is very broad and short, the carpal pro- 

 cess is raore than three tiiues as long as the rest of the joint, and reaches to the middle 

 of the stem of the metacarpus. The stera of the metacarpus is only a little longer 

 than broad, and is rauch longer than the femur; the metacarpal process is half as long 

 as the rest of the joint, and is somewhat longer than the stout dactylus. 



The third and fourth pairs (Pl. XIV, fig. 33) are similar in form, and eqnal in 

 length. The femur is a triÖe broader above than below, and is considerably longer than 

 the three following joints together. The carpus is somewhat shorter than the two preced- 

 ing joints together, and has three long bristles on the hind margin. The metacarpus is 

 considerably longer than the carpus, with the front margin feebly pectinated, and the lower 

 corner produced into a triangulär process, which is armed with one or two low teeth on 

 the front margin. The dactjlus is scarcelj' more than a third part as long as the 

 metacarpus. 



The fifth, sixth, and. seventh jiairs (Pl. XIV, fig. 34) are equal in length; the fifth 

 pair are a little shorter than the head and perason together. The femur is very narrow, 

 more than ni ne times as long as broad at the apex; the front margin is smooth, and 

 has the lower corner produced and sharp-pointed. The carpus is considerably shorter, 

 than the femur, that of the seventh pair is the shortest, being scarcely more than half 

 as long as the femur; it has a single bristle at the middle of the front margin. The 

 metacarpus in the fifth pair is not half as long, that in the sixth more than half as 

 long, and that in the seventh pair fully as long, as the carpus; the front margin is smooth, 

 and the lower corner is produced as in the preceding species. The dactylus is feebly 

 curved. 



The ])leon is shorter than the perajon. The segments are scarcely deeper than the 

 perajon, and have the hind corner obtusely rounded, and a tolerably long dorsal projection 

 in the median line. 



The pleopoda. The rami of the first pair have four joints each. 



The urus is scarcely half as long as the last pleonal segment. 



The uropoda (Pl. XIV, fig. 35). The jirst pair reach to the apex of the third; the 

 peduncle is very narrow linear, more than ten times as long as broad, and scarcely longer 

 than the inner ramus, which is considerably longer than the outer; both rami are smooth. 

 The second pair reach to the apex of the peduncle of the last pair; the peduncle is as 

 long as the inner ramus; the outer ramus is much shorter than the inner; both are smooth. 

 The peduncle of the third. pair is linear, more than ten times as long as broad, and a 

 little longer than the inner ramus, which is considerably longer than the outer; the rami 

 are smooth. 



The telson is minute, obtusely triangulär, and not a fifth part as long as the last 

 coalesced ural segment; it is as broad, and about a tenth part as long, as the peduncle 

 of the last pair of uropoda. 



