456 PHILOMYCID^. 



Oeniis TEBE]\^OPIIOKUS, Bixney. 1842. 



Body somewhat flattened, terminating obtusely, 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 



Fig. 715. 



Tebennopliorus Carolinensis. 



the whole 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 broad, composed of teeth of a short, 

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

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

 the centrals tricuspid, laterals bicuspid, uncini serrated. 



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

 has not been noticed by 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 l)y Binney (Bost. Journ. 

 Nat. Hist. iv. 163), under the name of Tcbemiophorus. No other 

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

 been referred l)y various authors to other genera, such as Limax, 

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

 jaw, etc., and to PhUomycus, a genus distinguished by the absence 

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



