352 PROCEEDINGS OF THE ACADEMY OF [May, 



cuticle, under a high power, is seen to be minutely crinkled, also 

 on the base. 



Oreohelix conoentrata (Dall). PI. 22, fig. 9. 



The specimen figured is No. 94,343 A. N. S. P., from Miller's Peak, 

 Huachuca Mts., Arizona. The penis is swollen below the middle, 

 length 8 mm., length of internally costate part 4.5 mm.; of epiphallus 

 4 mm.; of vagina about 3.6 mm. Diameter of the shell 15.5 mm. 



This agrees substantially with the large form of the same district, 

 0. c. form huachucana (Pilsbry, Proc. A. N. S. Phila. 1905, p. 275, 

 pi. 19, fig. 6). Both differ from 0. strigosa by the swollen penis and 

 relatively larger costate portion, which occupies more than half the 

 total length, as in 0. cooperi. My former reference of concentrata and 

 huachucana to 0. strigosa as subspecies was clearly erroneous, and 

 due to the fact that I had not dissected enough Oreohelices to appre- 

 ciate their specific characters. In the general discussion of the 

 anatomy (Proc. A. N. S. Phila. 1905, p. 271), 0. strigosa and huachu- 

 cana were put in separate divisions. 



Oreohelix metoalfei Ckll. PI. 22, fig. 10. 



Collected in abundance by Mr. Ferriss and the writer, in the 

 Black Range, New Mexico. The penis resembles that of 0. concen- 

 trata and 0. pilsbryi, the median portion being much swollen, with 

 very thick walls, and broad, longitudinal ribs inside. The much 

 narrower, twisted upper portion has coarse papillae within, and one 

 longitudinal papillose rib. Length of penis 12 mm., of its internally 

 costate portion 7 mm.; of epiphallus 4 mm.; vagina 4 mm. Diameter 

 of the shell 19.5 mm. 



The radula has 12 lateral teeth on each side, like those of 0. s. 

 depressa except that the cusps are more slender. 



Oreohelix pilsbryi Ferriss. PI. 22, fig. 8. 



Genitalia about as in 0. metcalfei. The swollen part of the penis 

 has about 6 unequal ribs within; these project slightly into the cavity 

 of the papillose portion, which has one longitudinal rib. Length 

 of penis 12, of the ribbed portion 7 mm.; epiphallus 4 mm.; penial 

 retractor 4 mm.; vagina '4 mm.; spermatheca and duct 15 mm. 

 Diameter of the shell 17.6 mm. 



Although the shell of 0. pilsbryi has an astonishing similarity to 

 that of 0. haydeni, the genitalia show that there is no direct relation- 

 ship. 0. metcalfei is closely related to pilsbryi, being anatomically 

 indistinguishable. 



