1915.] NATURAL SCIENCES OF PHILADELPHIA. 197 



differs from P. pachijloma Mke. by the sculpture of the apex and 

 the shallower groove back of the peristome. Unfortunately, the 

 animal was lost, but from notes made at the time of cleaning the 

 shell, the genitalia were similar to those of P. jejuna Say, but with 

 a very short finger-shaped penial gland. 



Praticolella lawae (Lewis). Fig. 10. 



Helix {Mesodon) lawii Lewis, Proc. Acad. Nat. Sci. Phila., 1874, p. 118. 

 This species has a pustulate apex and a parietal tooth. The 

 genitalia (fig. 10) of a specimen in the 

 collection of the Academy, No. 90,722, (^ '^P; 

 from Calera, Ala., collected by Mr. 

 H. H. Smith and presented by Mr. 

 G. H. Clapp, has a hollow penial 

 gland. The verge is rather short and 

 abruptly folded at the insertion of the 

 appendix and half way between this 

 point and the attachment of the long 



retractor muscle at the apex. The vas deferens is rather short. The 

 interior of the verge and the hollow penial gland is longitudinally 

 corrugated, while the convex side of the appendix is thick, and 

 granular on the inner surface. The spermatheca bulb is oval. 



Praticolella lawae tallulahensis (Pils.). 



Polygyra lawoe tallulahensis Pils., Nautilus, XII, p. 22 (1898). 



This shell has a pustulate apex, the peristome is much like P. 

 mohiliana Lea. The anatomy is not known. 



Praticolella jejuna (Say). 



Helix jejuna Say, Jour. Acad. Nat. Sci. Phila., II, p. 158 (1821). 



This is a smaller shell than P. bakeri, having a diameter of 5-6 mm., 

 with 10 or 12 spaced spirals on the apex; the lip is white and not 

 reflexed. The genitalia have been figured .in the Nautilus, XX, p. 33 

 (1906). The penis retractor has one attachment at the apex of the 

 phallus, and the penial gland is very long and finger-shaped. 

 Praticolella jejuna clavis n. var. 



This shell differs from P. jejuna by being larger, white and has 

 5 whorls. 



Alt. 5.5, diam. 8 mm. 



Types No. 100,126, A. N. S. Phila., collected by Dr. H. A. Pilsbry 

 on No Name Key, Florida, in 1907. 



All these shells have a peculiar oblique microscopic striation on 

 the surface of the newer whorls. 



