rianhlon Crustacea from ?\(Ao Zealand. 235 



end of the fronto-lateral suture on eacli side is a shallow 

 depression, and there is a median depression posteriorly 

 between tlie branchial regions. Posterior margin of carapace 

 slightly raised dorsally. The whole surface of carapace is 

 rough with minute spiniform points and short sette, and there 

 is a line of minute spines running obUquely downwards and 

 forwards on the anterior part of the lateral surface. 



Posterior thoracic and abdominal somites nearly smooth. 

 Third and fourtii leg-bearing somites distinct. Postero- 

 lateral angles of the fifth rounded. 



Abdomen rather stout and, including the telson, about 

 equal in length to the cephalothoracic region. Telson a 

 little longer than last somite, with about nine pairs of lateral 

 spines. 



Antcnnular peduncle extending well beyond tip of pseudo- 

 rostrum, its three segments subequal. 



Fi-. 1. 



Leptostylis (?) instddruin, adult female, from the side. 



Third maxillipeds with the ischium produced externally as 

 a finger-shaped lobe, ai)parently soft-skinned, carrying a few 

 short setai (tigs. 2 & 2 a). 



First legs witii basis about three fourths as long as distal 

 segments together, with numerous and very long plumose 

 hairs distally. Dactylus equal to carpus and a little shorter 

 than propodus (fig. 3). 



►Second legs with basis about four fifths as long as the 

 slender distal segments together, with numerous long hairs. 

 Dactylus nearly twice and carpus four times as long as 

 propodus. Posterior legs stout, with numerous seta3. I3asis 

 of third and fourth pairs carrying small exopodites of two 

 segments. 



Uropods slender. Peduncle twice as long as telson, with 

 numerous short spines on its inner edge. Kami subequal, a 



