Zoological Society. 227 



Body very elongated ; adductor mus- 

 cles united ; end of the mantle with 

 two calcareous pieces ; tentacles 

 small ; no cartilage nor reflected 



portion of the mantle Teredo. 



For the anatomy of the several genera marked in the above table 

 with an (*), the author acknowledges himself indebted either to 

 Cuvier, Poli, or M. de Blainville. 



He refers occasionally to other genera, besides those enumerated, 

 as included in the groups distinguished by the characters given 

 above. 



Mr. Gamer's paper was accompanied by numerous drawings of 

 the objects and structures described in it, which were exhibited in 

 illustration of his communication. 



Feb. 23. — Mr. Gould, at the request of the Chairman, exhibited 

 specimens of numerous Birds forming part of the Society's collec- 

 tion ; and directed the attention of the Meeting to those which he 

 regarded as the most interesting among them. 



He «tated that one of them was especially curious as exhibiting a 

 form of Insessorial Bird, not safely referrible to any known family ; 

 on which account he proposed to consider it as the type of a group 

 to be designated 



Paradoxornis. 

 Rostrum altitudine longitudinem superans, ad basin vibrissis in- 

 structum : mandibuld superiore valde compressa ; culmine acuto, 

 valde arcuato ; tomio edentulo, apicem versus valde incurvo, ad 

 basin producto : mandibuld inferiors ad basin lata, robusta; to- 

 mio emarginato. 

 Nares parvae, rotundatse, pone rostrum sitae. 

 Ala breves, rotundatse : remigibus 4ta, 5ta, et 6ta longioribus. 

 Cauda mediocris, gradata. 

 Tarsi robusti, laeves. 

 Pedes magni, subtus lati : digitis magnis ; halluce ungueque postico 



maximis. 

 Ptilosis ampla, laxa. 

 ^ The breadth of the under surfaces of the feet is so great as to in- 

 dicate considerable powers of grasping. 



Paradoxornis flavirostris. Par. arenaceo-brunneus, subths pal- 

 lidior; capite nuchdque rufo-brunneis ; auribus partim aterrimis ; 

 facie guttureque albis nigra variis ; pectore nigra. 

 Long. tot. 8 unc; alee, 3i; Cauda, 4^; tarsi, 1+; hallucis (ar- 



cuati), i. 

 Rostrum splendide aurantiaco-flavum ; pedes coerulescentes. 

 Hab. (verosimilitcr) in Nepalia. 



Mr. Gould regarded another of the Birds exhibited as the repre- 

 sentative of a new type among the Thrushes ; and characterized it as 

 the type of the genus 



Actinodura. 

 Rostrum subcompressum, subarcuatum, ad apicem subemargi- 



natura. 

 Nares basales, lineurcs, operculo magno tectae. 

 2 C 2 



