Histoire Naturelle des Mammiferes. 415 



Rocky Mountains," is the only Entomological article. It is con- 

 cluded in the present volume, and contains characters and descrip- 

 tions of several hundred new species, arranged according to the 

 system of M. Latreille. 



In the " Description of several new species of Holothuria, by 

 C. A. Lesueur," that gentleman remarks that the form of the body 

 of these animals, and the arrangement of the feet, which are 

 adopted as leading characters by Blainville and Cuvier, are too 

 variable, and frequently too indistinct from contraction in spirits, 

 to afford a certain guide. He therefore divides them into sections 

 according to their tentacula. Of the first of these sections, 

 *' With cylindrical tentacula; summit terminated by a branched, 

 flat, spherical, or infundibuliform umbel," four new species are 

 described ; two being referred to the second, with " arborescent 

 tentacula ;" and two to the third, in which the '• tentacula" are 

 *' pinnated, and the body vermiform." 



Of geological articles, connected with Zoology, there arc three, 

 the *' Description of the Os Hyoides of the Mastodon, by Dr. 

 Godman ;" the description of an "• extinct species of Crocodile, 

 from New Jersey, by Dr. Harlan ;" and a " Notice" by the latter 

 gentleman, " of the Plesiosaurus and other Fossil Reliquiae from 

 the State of New Jersey." 



Histoire Naturelle des Matnmiferes, Sfc. — Natural History of the 

 Mammalia, with original coloured Figures, designed after 

 the living Animals. Published under the authority of the 

 Administration of the Museum d"" Histoire Naturelle, by M. 

 Geoffroy Saint-Hilaire, and M. F. Cuvier. Elephant 

 folio. Nos. XLI.— L. 



At the advanced stage of this publication at which our Notices 

 commence, it is unnecessary to dilate upon the splendid style in 

 which it is brought out, or on the ability and fidelity that charac- 

 terise as well the figures as the descriptions contained in it, since 

 these must be well known to all who have seen any of the pre- 

 vious numbers. Suspended for a considerable period after the 



