12 



Scicena hololepidota, OtoUthus cBcuidens, Chrysophris glohiceps, 

 Chr. gibbicpps, and Pagrus laniarius, of MM. Cuvier and Valen- 

 ciennes ; an undetei mined species of Dentex ■. a fish allied to 

 Oblada, Cuv., and appaiently the type of a new genus ; a new 

 species of Scombcr, Cuv.; a Lichia? ; t\vo species of C/iiius, Cuv., 

 one of vvhich is probably the Clintis Capensis ; an undesrribed 

 species of Bagrus, Cuv., of the section distinguished in the " Regne 

 Animal " hy having six cirri and a rounded and smooth head ; a 

 species of Scyllium, Cuv., probably nevv to science ; and a second 

 species of the genus Rhina, Schn., which deviates from the type 

 by a shght production of the fiont of the head, and thus makes an 

 approach to Rhinobates, Schn. 



Mr. Vigors exhibited several species of Humtning-birds from 

 the collection of Mr. John Gould, one of \vhich, previouslj' unde- 

 scribed, had been dedicated to Mr. George Loddiges, F. L. S., &c. 

 It approaches most nearly to the Trodiilus Lalandei, Vieili., but mrty 

 be distinguished from that bird (in which the crest is brilliantly 

 green and the throat and breast rich blue,) by the foUou'ing cha- 

 racters : 



Trochilus Loddigesii, Gould. Troch. cristd elongaid, purpu- 

 reo-Ulttcind ; gula crissoque saturate clnereis ; pectore abdomine- 

 que nigris. 



This species is from Rio Grande. 



Mr. Loddiges stated that both species belonged to a genus \vhich 

 he had distinguished among the TrochUida by the name of Cephal- 

 lepis ; and promised to bring before the Committee, at an early 

 meeting, the results of his researches on the Trochilida generally. 



At the request of the Chairman, Mr. Martin reported the diseased 

 appearances noticed on the examination of the Beaver ■A'iiich re- 

 cently died in the Society's AJenagerie. They Mere stated to be 

 such as result from great and universal inflammation. On exami- 

 ning the stomach, its lining membrane \vas found covered with a 

 blush of inflammation, prevailing more especially about its cardiac 

 portion, where a number of durk-coloured spots and patches indi- 

 cated the existerice of gangrene. Both the stomach and the colon 

 contained undissolved iibres of bark in considerable ąuantity, the 

 function of digestion having been for some time past necessarily de- 

 ranged. Along the course of the small intestines, ti-aces of high 

 arterial action ^vere still presented ; in the large intestines the traces 

 of inflammation \vere more obscure. The pericardium \vas highly 

 inflamed, its inner surface presenting a granulated appearance. The 

 heart also, as well as the lungs, gavę evidence of having partaken 

 in the general disease. Much disease existed about the lower jaw, 

 which may probably have been the primary cause of all the 

 mischief, as it mušt have existed for several months, aud necessarily 

 have produced a continued statė of irritation in the system. The 

 alveolar processes of the lovver ja\v, embracing the incisor teeth, 

 were destroyed by caries, and the teeth themselves had fallen out. 



