108 AMPniPODA NOUM.VLIA. 



palm, including the whole of the inferior margin, minutely ciliated, 

 straight, nearly parallel with the superior margin ; carpus pro- 

 duced, pointed, antagonizing with the extremity of the dactylos ; 

 dactylos arched, bent at the extremity. Second pair of gnatho- 

 poda having the propodos gradually widening towards the palm ; 

 superior margin anteriorly produced into a tooth beyond the 

 articulation with the dactylos ; palm oblique, imperfectly serrated ; 

 inferior angle rounded ; inferior margin straight ; carjnis inferiorly 

 produced, its apex antagonizing with the extremity of the dactylos. 

 Pereiopoda subeqxial in length ; posterior pair having the bases 

 ovate ; posterior margin serrated. Three posterior pairs of pleo- 

 poda subequal. Telson lanceolate. Colour claret-red. 

 Length ^ths of an inch. 



Hah. From roots of Laminaria in a few fathoms water, Cumbrae, 

 N. B. {Mr. Rohertson), 



24. DARWINIA. 



Danvinia, Spenee Bate, Brit. Assoc. Report, 1855 ; Synopsis, Sfc, Ann. 

 Nat. Hist. Feb. 1857. 



Cephalon produced. Pereion not compressed. Eyes two. Superior 

 antennae without a secondary appendage. Inferior antennae not 

 so robust as the superior. Mandibles with an appendage. Gna- 

 thopoda subchelate. Pereiopoda strong, equal, having the dactylos 

 sharp, cm-ved, and powerful. Three posterior pairs of pleopoda 

 biramous, styhform. Telson single, entire, squandform. 



This figm'e is named after the distinguished author of the Mono- 

 graph of the Cirripedia. 



1. Darwinia compressa. (Plate XVII. fig. 7.) B.M. 



Dar\vinia compressa, Spence Bate, Brit, Assoc. Report, 1855 ; Synopsis, 

 i^-c, Ann. Nat. Hist. Feb. 1857. 

 White, Hist. Brit. Crust, p. 176. 



Cephalon produced into a short, obtiise, flat rostrum. Pereion 

 broad and smooth. Third segment of the pleon not so deej) as 

 the preceding ; three posterior segments suddenly narrower, and 

 reflected closely beneath the thi-ee preceding. Eyes roimd. Su- 

 perior antenna) longer than the inferior, having the peduncle 

 nearly as long as the flagellum. Inferior antennae reaching a 

 little beyond the peduncle of the superior. Fii'st pair of gnatho- 

 poda very small, scarcely subchelate, ha\nng the superior and 

 inferior margins of the propodos nearly parallel ; palm not defined, 

 furnished with a few shorf hairs ; dactylos long, and scarcely 



