462 Zoological Society. 



neus cceruleo punci ulatiis ; capite virescenie, vittis tribus latis 

 rjifis ; pinnis dorsali analique litteis, sangnineo oblique lineatis, 

 nigra late marginal is, ccBriileoque Jimbriatis ; hiijiis Jascia margi' 

 nali linea cceridca longitudinali media alteruqiie ad basin notata. 

 D.tV- A.xV. p. 1'-^; .C. 13. 

 This new species of Jidis is one of tliose fishes, now becoming nu- 

 merous, which might be confounded with the Jidis Aygnla, ( Coris 

 Aygida, LaCep.). The latter appears to have hitherto rested solely 

 on the figure and description preserved by Commerson, no specimen 

 of it having been referred to as existing in collections. A specimen 

 of that species has, however, recently been added to the Society's 

 Museum from a collection of fishes formed in India, and agrees well 

 with the figure published by LaCepede, in the truncation or even 

 sublunation of its caudal fin, and in its general form ; in its dried state 

 its colour is uniformly dull blackish brown. This specimen was ex- 

 hibited in illustration of the distinction between julis Cnvieri and 

 Jiilis Aygida, and also to show that the fish figured under the latter 

 name by Dr. Riippel differed in various particulars, especially in the 

 rounded form of^its caudal fin, from the species indicated by LaCe- 

 pede. To M. Riippel's fish, it was remarked, the name of Julis 

 Ruppelii might properly be applied. 



Anguilla Mauritiana. Ang. maxilla superiore breviore, obtusd; 

 rostro complanalo ; pinna; dorsalis initio jjectoralibus quam anali 

 fropiore; linea laterali conspicua : dorsofusco pallidoque gutta- 

 tint marmorato, lineolisque nigrescentibus intertextis notato ; pin- 

 nisfosco nebulosis. 

 P. 18? 

 Mr. Bennett availed himself of the opportunity afforded by the 

 exhibition of the several species of Pterois contained in the Mauri- 

 tius collection, to bring before the Committee a fish which he had 

 formerly regarded as the Pterois volitans, under which name it was 

 included in the catalogue of Sumatran fishes appended to the me- 

 moir of Sir T. Stamford Raffles. It formed part of the collection 

 presented to the Society by its founder and first President. It was 

 thus characterized: 



Fterois Russelii. Pter. gents spinosim late lineato-serratis ; osse 

 infra- orbitali antico prcnoperculoque iiiferne spinosissimis : cirris 

 parvis sex, nasali utrinque diiobusque iiifra-opercularibus : pinnis 

 pectoralibus caudalis basin attingentibus. 

 D.-l-f. A.J. P- 13. 

 Kodipungi. Riissel, Coromandel Fishes, No. 133. 



September 13, 1831. W. Yarrell, Esq. in the Chair. 



At the request of the Chairman the following notes of a dissection 

 of the Alligator Tortoise {Chelydra serpentina, Schweig.) were read 

 by Mr. Martin. They were illustrated by preparations of the sto- 

 mach ; of the ilium and colon ; and of the cloaca, with the7;<'«?'s and 

 urinary bladders: a drawing of the latter was also exhibited ; and 

 a drawing of the throat, representing the cesophagus and trachea in 

 their natural positions. 



" The animal was a male, and most probably young : its length 



from 



