444 Zoological Society. 



8. Papilio Zelicaon. Resembles P. Machaon. Distinguished by 

 having the black margins of the wings much broader and of a deeper 

 black ; by the lunules of the posterior wings which are not all pre- 

 ceded by spots of blue points ; and by the yellow spot in the anal 

 angle of these, which has in its centre a deep black lunule. It inha- 

 bits California. 



9. Papilio Rutulus. Very near P. Turnus. The black margins 

 and bands of the wings similar to those of that species, but broader 

 and deeper in tint ; the posterior wings with five marginal lunules 

 instead of six. From California. 



10. Papilio Eurymedon. Allied to the preceding species. The 

 ground colour is white instead of ochreous, as in P. Rutulus, and the 

 tail of the hinder wings is broader. It also inhabits California. 



The remainder of this number is occupied by reports of the pro- 

 ceedings of the Academy of Sciences for the sittings of the 1st, 10th, 

 15th and 22nd March ; an analysis of the proceedings of the Zoolo- 

 gical Society of London ; and a not^from M. Z. Gerbe containing de- 

 scriptions of two new species of Arvicola (p. 1.59). 



1 . Arvicola leucura, A. corpore supra cinereo-flavescente, subtus 

 albo ; hypochondriis subflavis ; pedibus canescentibus ; mystacibus 

 crassis, capite longiusculis ; auriculis magnis, capite villosis, vellere 

 longioribus ; cauda subpilosa utrinque albida. " Basses-Alpes." 



2. Arvicola Selysii. A. supra fusco-ferruginea, subtus cinerea 

 pallide fulva ; hypochondriis rufescentibus ; pedibus cinereis ; auri- 

 culis vellere prominulis, atris, pilosis ; mystacibus exilibus ; capite 

 brevioribus ; cauda superne fusca, interne flavescente, penicillo sordide 

 albo apice instructo. "Basses-Alpes." 



M. Gue'rin also announces that M. Poey, director of the Museum 

 of Natural History of Cuba, is about to publish a work on the natu- 

 ral history of that island, under the title of " Memoires sur I'Histoire 

 naturelle de Tile de Cuba." 



PROCEEDINGS OF LEARNED SOCIETIES. 



ZOOLOGICAL SOCIETY. 



January 28, 1851.— R. H. Solly, Esq., F.R.S., in the Chair. 



Description of two new genera and some new species 

 of scutellid^ and echinolampid^ in the collec- 

 TION OF THE British Museum. By John Edward Gray, 

 Esa., F.R.S., P.B S. etc 



The collection of the British Museum is extremely rich in species 

 of recent Echinoids, and fortunate in possessing long series of different 

 ages of several of the species. 



Having been recently occupied in arranging and forming a cata- 

 logue of these animals, I transmitted to the ' Annals of Natural Hi- 

 story ' for February a description of several genera and species of 

 Spatangidce. 



MM. Agassiz and Desor having recently published, in the Mono- 



