302 LAND AND FRESH-WATER SHELLS OF N. A. [PART I. 



his observations sliall be confirmed by others.* He describes the 

 jaw as arcuate, ends rounded, blunt, anterior surface with stout 

 costag, strongly deuticulating the concave margin. The lingual 



Fig. 537. 



Lingual dentition of Ttlennophorus dorsalis f 



membrane he describes as composed of 115 rows of one hundred 

 and thirteen teeth each (56 — 1 — 56) ; centrals tricuspid, laterals 

 bicuspid, uncini with three or four cusps or serrate. 



Spurious Species of Tebexnophorus, <tc. 



Tcbennophoriis bilineatus, Cart., United States, of Gkateloup (Dist. Geog. 

 p. 30), is unknown to me. 



Philomijciis <]un(lrilus, fuscm, o.ri/rus. anA Jlexuolar-is of Rafinesque (see 

 Terr. Moll. I, p. 51 and 52), and Pliilomycus (^Enmelus) Ihndiis and 

 nehulosus are placed in the same genus as TebcnnopJiorus carolinensis 

 by Gkay and Pfeiffer, Brit. Mus. Cat. They are unknown to me. 



B. Head, rye-peduncles, and tentacles simple, contractile. 

 Teeth numerous, four-sided, close on the lingual membrane. 



Family VERONICELLID^. 



Lingual membrane very broad, teeth uniform, in numer- 

 ous close, straight transverse rows, the centrals small, the 

 laterals large, conical, pointed. 



Jaw (of Vero7i{ceUa floridana) narrow, arched, ribbed. 

 Animal limaciform, elongate-ovate. Mouth not furnished 

 with a buccal veil. Eyes at the end of contractile peduncles ; 

 tentacles bifid, non-retractile. Mantle greatly extended, cori- 



' The more so as he figures the jaw and tongue of an Arion for those of 

 Limax agrestis, I have detected errors of my own of this kind, arising 

 from incorrectly labelling extracted jaws and tongues. 



