| OCR Text |
Show 528 MR. W. E. COLLINGE ON A N E W [June 19, constricted, and again a little higher up; its upper portion is convoluted and opens into a long thin tube-the vas deferens. In J. bitentaculata the penis is much shorter, and usually exhibits a sharp distinction between that organ and the vas deferens (cf. Keferstein l and Macdonald 2 ) . Attached to the distal end of the penis is a small short retractor muscle; its point of attachment to this organ affords a ready means of distinguishing between penis and vas deferens. The continuation of the vestibule forms a simple pouch-like cavity-the free portion of the oviduct. From reference to figs. 1 & 3, it will be seen that in J. maculata the long Fig. 2. Generative system of Janella bitentaculata. (For lettering see p. 527.) tube-like portion of the free oviduct is absent, whilst in J. bitentaculata it is quite as long as the pouch-like portion. The receptaculum seminis is a large oval or circular sac, opening into the lower portion of the free oviduct, just above the opening of the penis into the vestibule. The combined oviduct and prostate form a short convoluted tube, not more than two-thirds the length of that organ in J. bitentaculata. Covered partly by the large hermaphrodite gland and its duct is a very peculiarly shaped albumen-gland, consisting of a large oval-shaped mass with a thin flattened upper portion. The hermaphrodite duct is large and oval in form, 1 Zeit. f. wiss. Zool. 1865, Bd. xv. t, xxxiv. fig. 3. 2 Ann. & Mag. N. H . 1856, vol. xviii. (ser. 2) pi. iii. fig. 6. |
