52 CAKI> BOVÅLL1U.S, AMPIIIHODA HYPERIIDEA. VIBILID^. 



The Kccitnd pair of av,tennte are iive-joiuteil in tlie feiiiale, tlie last joint is the shortcst. 



The first jiereional segment is only a little shorter than the second, the fourth seg- 

 ment is tlic longest. 



The second pair of pereiopoda (Pl. VIII, fig. 3) have the femur narrow, linear, as 

 long as all the following joints together. The hinder lower corner of the tibia is scarcely 

 produced. Tlie earpal process is scarcely as long as a third of the nietacarpus, not ser- 

 rated. The metacarpus is as long as the carpus, sinooth; the dactylus is stout, longer 

 than two thirds of the metacarpus. 



The third and fourth pairs (Pl. VIII, fig. 4 and 5) are very robust; the tibia is 

 very broad but not tumid, a little longer than the carpus; the metacarpus is very thick, 

 not serrated, but provided with some few minute bristles; it is longer than the car])us. 

 The dactylus is long and strong, longer than half the metacarpus. At its base then^ is a 

 large hole, through which the secretion of the Avell-developed metacarpal glands passes out. 



The fifth and si.rth pairs (Pl. VIII, fig. 6). The metacarpus is a little longer than 

 the carpus, provided with some short, equidistant, minute bristles along the anterior margin. 

 The dactylus is smooth, as long as a third of the metacarpus. 



The seventh pair are not fuUy developed, as the specimen examined is very young, 

 the femur is broad, linear, with rounded corners. 



The pleon is about as long as the last four pereional segments together. 



The peduncles of the pleoj)oda are longer than the rami. The outer ramus is 8- 

 jointed, the inner 9-jointed; at the base of the outer ramus there is to be seen a little 

 appendicular tubercle or process without hairs, which may possibly be the same organ that 

 is mentioned by Milne Edwards in Vihilia Peroni^) (Pl. VIII, fig. 7). 



The second and third ural segments are coalesced, about as long as the first. 



The peduncle of the first pair of uropoda (Pl. VIII, fig. 8) is very broad, shorter 

 than the rami (8:9), the rami are ecjual, coai\sely serrated along both margins, with the 

 serrations of the outer margin again finelv serrated. The peduncle of the second pair is 

 narroAx-ed above, a foui-th shorter than the rami; the exteriör ramus is coarsely serrated 

 along the outer margin and finely serrated along the inner; the interiör ramus is finely 

 serrated along the outer margin, the inner smooth. The peduncle of the third pair is 

 a little longer than tlie rami (8:7), pretty bi'oad, linear, exactly as long as the last ural seg- 

 ment; the exteriör ramus is almost smooth on the outer margin, finely serrated along the 

 inner. The interiör ramus is a little shorter than the exteriör, finely serrated at the apex. 



The telson is short, almost semi-circular, scarcely longer than a third of the pe- 

 duncle of the last pair of uropoda. 



1) Histoire natuvelle des Crustacés. Torne 3"«, p. 73. Pl. ;:iO, fig. 3 a. 



