. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 352 TERRESTRIAL AIR-BREATHING MOLLUSKS. and still lower down. There is a well-marked prepuce. Opposite the en- trance of the penis, on the other side of the vagina, which is here considerably swollen, is a sac-like organ (PI. XV. Fig. E, pr. g), ending in a smoothly rounded dart sac (d s), with a short dart within it. Just below this dart sac opens the duct of another very variable organ (a g), cylindrical, hollow, of a reticulated appearance, irregular in size and bearing a globular apex; it is much longer than the p
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 352 TERRESTRIAL AIR-BREATHING MOLLUSKS. and still lower down. There is a well-marked prepuce. Opposite the en- trance of the penis, on the other side of the vagina, which is here considerably swollen, is a sac-like organ (PI. XV. Fig. E, pr. g), ending in a smoothly rounded dart sac (d s), with a short dart within it. Just below this dart sac opens the duct of another very variable organ (a g), cylindrical, hollow, of a reticulated appearance, irregular in size and bearing a globular apex; it is much longer than the penis with its flagellum, and stouter, as in Fig. E, or much less developed, and without the bulb as in F. No dart was noticed within this organ. It is, no doubt, a form of vaginal prostate, as described by Moquin-Tandon. The genital bladder is globular. Its duct is long, free in the upper half of its course. The oviduct, ovary, genital bladder, testicle, etc., of infumata (Fig. F) are not figured by me. They are as in fidelis (Fig. E). This comparison of the genitalia strengthens the belief of the identity of the two forms. Aglaia infumata, Gould. Shell umbilicated, large, discoidal, biconvex, obtusely carinated at the pe- riphery, widely umbilicated, smoky above, roughened with minute, oblique, rasp-like irregularities which bear very short, soft hairs in the fresh state, below very black, shining and minutely granulated; whorls 6^, convex; aperture rhomboidal; peristome reddish, somewhat reflected at base ; throat silky-lilac, near the peristome smoky. Di- A. infumata. ametev, 37 mill.; height, 20 mill. Helix infumata, Gould, Proc. Bost. Soc, V. 127 (1855); Terr. Moll., III. 13. — W. G. Binney, Pac. R. R. Rep., VI. 112 (1857); Terr. Moll., IV. 15, PI. LXXIX. Fig. 2 ; L. & Sh., I. 161 (1869). — Pfeiffek, Mon. Hel. Viv., IV. 351. Aglaja infumata, Tryon, Am. Journ. Conch., II. 310 (1867). Californian Region from Humboldt's Bay to San Pablo Bay, especially in Marin
Size: 2031px × 1231px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorha, bookcentury1800, bookdecade1870, booksubjectzoology
