. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. ARIONTA. 355 HdU a-rnginom, Gould, IVoc. liost. Soc, V. 127 (1855); Terr. Moll., III. 12. — W. G. BiNNEY, Pac. R. R. R^i)., VI. 113 (1857) ; preoc. in Helix. Helix arrosa, Gould, in litt, ; Otia, 215. —W. G. liiNNKY, Proc. Acad. Nat. Sci. Philad., 1857, Flg^238. 185 ; Terr. Moll., IV. 16, PI. LXXVI. Fig. 4 ; L. k Sh., (1869). — Pfeiffeu, Mon. Hcl. Viv., IV. 350. J(jiaja arrosa, TuYON, Am. Journ. Conch., II. 311 (1867). In the Californian Rcjjion, Santa Cruz to Men- docino County, two hundred mile
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. ARIONTA. 355 HdU a-rnginom, Gould, IVoc. liost. Soc, V. 127 (1855); Terr. Moll., III. 12. — W. G. BiNNEY, Pac. R. R. R^i)., VI. 113 (1857) ; preoc. in Helix. Helix arrosa, Gould, in litt, ; Otia, 215. —W. G. liiNNKY, Proc. Acad. Nat. Sci. Philad., 1857, Flg^238. 185 ; Terr. Moll., IV. 16, PI. LXXVI. Fig. 4 ; L. k Sh., (1869). — Pfeiffeu, Mon. Hcl. Viv., IV. 350. J(jiaja arrosa, TuYON, Am. Journ. Conch., II. 311 (1867). In the Californian Rcjjion, Santa Cruz to Men- docino County, two hundred miles along the coast, only twenty-five miles inland. (Cooper.) I have in my cabinet an albino form, and specimens very much smaller than that fijiured. The epiphragm is white, thick, membranous. Jaw arcuate, of uniform breadth throughout; ends bhmt; anterior surface with a few (6) rather distant, stout ribs crenulating both margins (see Fig. 237). The lingual membrane (PI. IX. Fig. D) has 54—1—54 teeth, 17 laterals, 180 rows. Teeth of the type usual in the genus. The genitalia (Pl. XIII. Fig. I) are as in yl. Nickliniana. The penis sac is extremely long and gradually tapers into a flagellum. It receives the retractor muscle beyond the middle of its length, and the vas deferens at three quarters of its length from the vagina. The genital bladder is very small, oval, on a very long duct, which has a very long, stouter accessory duct (a d). The vaginal prostate with its bifurcate flagellum was not present in an individual whose genital system was formerly described and figured by me. I have recently observed it in numerous specimens, and it is figured by Semper (Phil. Arch., PI. XV. Fig. 13). c? s is a dart sac. The dart is short, stout, acumi- nated, on a broad flat base. Arionta ToTvnsendiana, Lea. Vol. III. PI. XIX. Shell umbilicated, depressed-globose; epidermis yellowish and brownish horn-color, more or less intermixed; suture distinct; whorls 5^, with minute, impresse
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
