456 PHILOMYCID^. 



Genus TEBENNOPHORUS, Binney. 1842. 



Body somewhat flattened, terminating oljtusely, or in a somewhat 

 truncated form. Back convex, more flat when fully extended. In- 

 teguments with irregular vermiform glands, anastomosing with each 

 other, and having a general longitudinal direction. Mantle covering 



Tebennoplwrus CaroUnensis. 



the wh:jle body. Locomotive disk expanded at its margin, and vis- 

 ible beyond the sides of the mantle; no median band. Respiratory 

 orifice near the head. Anal orifice contiguous to, and a little above 

 and in advance of, the pulmonary orifice. Orifice of organs of 

 generation behind and below the eye-peduncle. Without terminal 

 mucus-pore. 



Jaw horn colored, arcuate, with a slightly denticulated or irregular 

 concave margin, bearing a blunt slightly projecting beak ; termina- 

 tions blunt ; the anterior face is convex, without a decided median 

 carina, and strongly striate. 



The lingual membrane is very })road, composed of teeth of a short, 

 conical form, the central symmetrical and smaller, the laterals in- 

 clhied towards the central, apex of each sharp ; or as in T. dorsalis, 

 the centrals tricuspid, laterals bicuspid, unciiii serrated. 



The internal rudimentary, nail-like shell described by Dr. Gray 

 has not been noticed hy any American author. 



The habits of the genus are similar to those of the native species 

 of Limax. 



This genus was first described in 1842 by Binney (Bost. Journ. 

 Nat. Hist. iv. 1G3), under the name of Tcbennophorus. No other 

 descriptions of it have been published. The three species of it have 

 been referred liy various authors to other genera, such as Limax^ 

 which differs in liaving a small, shield-like mantle, a different shaped 

 jaw, &c., and to P/uIodi/jcus, a genus distinguished by the al)sence 

 of a mantle. The latter genus probably existed only in the fertile 



