HABITS AND PROPERTIES. 13 



copied there his generic and specific characteristics. 

 We refer those -who consider his pretended discoveries 

 of more weight than we do, to that part of this work. 

 M. F^russac gave his sanction to the genera of M. Raf- 

 inesque by adopting them in his great work ; hut they 

 were by nearly every otheir naturalist received with 

 much doubt, and considered to require further confirm- 

 ation. 



In examining the species wliich was first noticed by 

 M. Bosc under the name of lAmax caroliniensis, we be- 

 came aware that, instead of being destitute of a mantle, 

 as might be inferred from his description, that organ was 

 more fully developed than in any described species, and 

 covered the whole body. As this charactei-istic excludes 

 it from Limax, according to the received definitions, it 

 became necessary to establish a new genus for its recep- 

 tion, which we proposed in January, 1842, under the 

 name of TehennojjJiorus. The distinction thus founded 

 on its external characters, has been confirmed by an ac- 

 quaintance with its anatomical peculiarities, since ascei'- 

 tained by Dr. J. Wyman. In August, 1842, a genus 

 which he called Ineillaria* was proposed by Mr. W. H. 

 Benson, in a Memoir on the fauna and flora of Chusan, 

 by Dr. Cantor, in the Annals and Magazine of Natural 



* The following are the generic characters as given in the Memoir ; 

 " Corpus elongatum, postice attenuatum, repens, undique velo marginatum. 

 Tentacula quatuor, superioribus oculiferis, inferioribus integris. Foramen 

 commune in latere dextro, non procul ab extreraitate antici veil situm." 

 The name is derived from " incile," a gutter, and has reference to the gutter- 

 like chaimel which divides the mantle from the foot. 



VOL. n. 4 



