CONTENTS. 



No. VII. October, 1825. 



Page 

 Art. XXXI. Descriptions of Thirteen Species of Formica, 



and Three Species of Culex, found in the Environs of 



Nice. By William Elford Leach, M.D. F.R.S., 



Sfc.Sfc 289 



Art. XXXII. J nezo genus of Mammalia proposed, and a 

 Description of the Species upon which it is founded. Dy 

 Mr. T. Say, and Mr. G. Ord 293 



Art. XXXIII. Description of a new species of Mammalia, 

 whereon a genus is proposed to be founded. By Mr. T. 

 Say, and Mr. G. Ord 296 



Art. XXXI v. A Monograph of the Tortoises having a 

 moveable Sternum, with Remarks on their Arrangement 

 and Affinities. By Thomas Bell, Esq. F.L.S 299 



Art. XXXV. On two Genera and several Species of 



Crinoidea. By Thomas Sa y. Esq 311 



Art. XXXVI. Note on the foregoing Paper, together with 

 a Description of a nezo Species ofPentremites. By G. B. 

 SowERjiY, Esq. F. LS., Sfc 316 



Art. XXXVII. Notice of a Fossil belonging to the Class 

 Radiaria, found by Dr. Bigsby in Canada. By G. B, 

 SowERBY, Esq. F.L.S. , S)C 318 



Art. XXXVIII. Descriptions of two new Species of the 



Genus Orbicula. By G. B. Sowerby, Esq. F.L.S., S^'c. 320 



Art. XXXIX. On Leptophina, a group cf Serpents com- 

 prising the Genus Dryinus of Merrem, and a newly 

 formed Genus proposed to be named Leptophis. By 

 Thomas Bell, Esq. F. L.S 322 



