474 



PROCEEDINGS OF THE ACADEMY OF 



[July, 



Omphalina cuprea polita Pils. 



Omphalina fuliginosa polita Pils., Nautilus, XII, p. 86, Dec, 1898. Ferriss, 

 Nautilus, XIV, p. 56; Pilsbry, Proc. A. X. S. Phila., 1900, p. 134. 



Has not been dissected. It is characteristic of the mountains 

 along the Tennessee — North Carolina boundary. 



Omphalina pilsbryi Clapp. 



Omphalina pilsbryi Clapp, Nautilus, XVIII, p. 30, July, 1904. 



The foot has a wide double margin, the upper groove obsolete 

 near the end of the tail, as usual (fig. 2 C). The tail is elevated, not 

 flat as in cuprea. The caudal pore is a short median slit, sur- 

 rounded by concentric grooves (fig. 2 A). 



The mantle-edge bears a very large, right lobe and smaller left, 

 both being conspicuously larger than in other known Oniphalinas. 

 The lung is irregularly and rather copiously maculate (fig. 2 B, 

 anterior end from the inside). 



The penis and epiphallus are very long and there is a thick choco- 

 late-colored vaginal gland around the base of the vagina. Other 

 organs as usual in the genus (PL XXXVII, fig. 6). 



Fig. 2. — Omphalina pilsbryi Clapp. A, end of foot and tail pore. B, anterior 

 end of lung and mantle-edge. C, side view of foot, contracted in alcohol, 

 showing position of genital orifice and double foot-groove. 



The jaw is pale yellow and has a very strong median projection. 



The radula (PI. XXXVIII, fig. 7) has 55, 1, 55 teeth with 5 or 6 

 laterals. The basal plates of central and lateral teeth are somewhat 

 shorter than in 0. cuprea, and the transition teeth have a more 

 distinct and more acute ectocone. Otherwise the teeth do not 

 differ materially from those of 0. cuprea. 



Omphalina kopnodes (W. G. Binn.). 



Zonites capnodes W. G. B., Terrestr. Moll., V, p. 9S, pi. 2, f. K, teeth. 

 Ann. N. Y. Acad. Sci. I, 357, pi. 14, f. C, genitalia of specimen from near 

 Knoxville, Tenn. Also first supplement to Terr. Moll., V, p. 137. 



The foot has the usual double margin. The tail pore is in form 



