POLYCEIUN.K. 



53 



Species of Doriprismatica. 



albescens, Hupp. 

 atromarginata, Guv. 

 cserulea, Hupp, 

 castanea, Alder and Hanc. 

 dorsalis, Gould. 

 elegans, Quoy and Gaim. 

 elegantula, Phil. 

 impudica, Rilpp. 

 infuscata, Hupp. 

 leniniscata, Quoy and Gaim. 

 lineata, Eyd. and Soul. 

 magnifica, Quoy and Gaim. 

 rnarmorata, Sariyny. 



nodosa, Mont. 



obsoleta, Hupp. 



pallida, Hupp. 



picta, Phil. 



pulchella, Hupp. 



pulcberrima, Cantr. 



purpurea, Laurillard. 



reticulata, Quoy and Gaim. 



tinctorum, Hupp. 



trilineata, Adams and Reeve. 



Villafranca, Risso. 



Webbii, DVrb. 



Wbitei, Adams and Reeve. 



Genus BRACHYCHLANIS, Ehrenberg. 



Tentacles cervical, not placed on the mantle, but at its edge 

 in front. Mantle narrower than the foot. 



Ex. B. pantherina, Ehrenberg. 



This is a genus of Ehrenherg's, of which he has unfor- 

 tunately omitted to give a figure : the fact of the mantle 

 being narrower than the foot, and the sub-dorsal position 

 of the tentacles, will serve to distinguish the genus from 

 Doriprismatica. A single species, from the Eed Sea. 



Sub-fam. POLYCEElNiE. 



Body elongate, sub-angular ; mantle indistinct. 



In the remaining six genera of this family the mantle 

 gradually becomes obsolete, the dorsal region is more 

 elevated, and the oral tentacles arc but slightly developed. 

 They are animals of great beauty, both of form and colour. 



VOL. IT. I 



