. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. CYLINDRELLA. 381 ILlix aaprrsa, Mi'i,i,En, Venn., II. .09.—Pfeiffer, Mon. Ifol. Viv., I. 241.— DkKay, N. Y. Moll., 47 (1843). — Binney, Terr. Moll., II. 117, not in plate. — W. G. Binney, Terr. Moll., IV. 51, PI. LXXVII. Fig. 4 ; L. & Sh., I. 183, ^^«- ^' (18C9). Pomatia (ispcrsa, TiiYON, Am. Journ. Conch., II. 322, 16 (1866). In gardens in Charleston, South Carolina, and vicinity, •where it has existed for fifty years; I found it plentifully in St. Michael's churchyard in 1875; also has been found
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. CYLINDRELLA. 381 ILlix aaprrsa, Mi'i,i,En, Venn., II. .09.—Pfeiffer, Mon. Ifol. Viv., I. 241.— DkKay, N. Y. Moll., 47 (1843). — Binney, Terr. Moll., II. 117, not in plate. — W. G. Binney, Terr. Moll., IV. 51, PI. LXXVII. Fig. 4 ; L. & Sh., I. 183, ^^«- ^' (18C9). Pomatia (ispcrsa, TiiYON, Am. Journ. Conch., II. 322, 16 (1866). In gardens in Charleston, South Carolina, and vicinity, •where it has existed for fifty years; I found it plentifully in St. Michael's churchyard in 1875; also has been found at New Orleans and Baton Rouge ; Portland, Maine ; Nova Sco- tia ; Santa Barbara, California; Hayti; St. ^ lago, Chili, etc. It is a European species, ac- cidentally introduced into this country, or rather by commerce as an article of food. It evidently is a species peculiarly adapted to colonization. Jaw and lingual membrane (see above). Genitalia figured by Schmidt (Geschlechts. dcr Styl., PI. I. Fig. 5), The genital bladder is small, globular, or a long narrow duct, which has a long ac- cessory duct also. The sac is small, globular, on a long duct, which has at about the middle of its length a much longer and stouter accessory duct. The penis sac is long, cylindrical, greatly swollen at its junction with the vagina; the retractor muscle is inserted above this swelling, the vas deferens enters at the apex, beyond which is an excessively long, thread-like flagellum. Opposite the entrance to the penis sac is a very long, stout dart sac, above which are two bundles of numerous, short, closely packed multifid vesicles. EXTRALIMITAL SPECIES OF POMATIA. Ponuitia Biiffoniana, Pfeiffer, a Mexican species, has been erroneously quoted from Alameda County, California. It is figured on PI. LXIII. of Vol. III. (3) Jaw with delicate, distant ribs to its anterior surface, nsually running obliquely to the median line. CYLINDRELLA, Pfeiffer. Animal heliciform, blunt and sh
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