OCR Text |
Show 246 MESSES. COLLINGE AND GODWIN-AUSTEN ON [Mar. 19, along the inner side of the penis and on the side of the vagina and free oviduct. The retractor muscle has its attachment some little distance below this, close to the point where the thickened flagellum (calc-sac) terminates (fig. 23). The interior lining of the flagellum has a beautifully papillated surface (fig. 24), the raised portions being renate in form and directed forwards, somewhat like the teeth of a coarse file. The prostatic and oviducal canals, forming the common duct, are thrown into a series of sharp folds, which are not without some difficulty unwound. The albumen-gland is large and somewhat pyriform in shape. The hermaphrodite gland is a small oval-shaped body with a short thin tube attached-the hermaphrodite duct. The amatorial organ (fig. 22) has a sharp coil about midway in its length, with the large swelling glandular mass above; immediately below the coil, where the sheath narrows, is a calcareous dart (fig. 25) funnel-shaped at the base. IV. MICEOPAEMAEION SIMEOTHI, n. sp. Shell (fig. 28) oval in form, solid, olivaceous amber-colour, the lines of growth very strongly and regularly marked; apex small, white with a deep suture. There is an indication of its having had two and a half whorls when very young, the last whorl being covered again by the more mature and later formed shell of the last whorl. Major diameter 17 millim., minor diameter 10 millim. Animal (figs. 26 to 29). Colour variable, posterior portion mottled with chocolate and brown; median region yellowish brown; anterior and dorsal regions similar, with two very conspicuous black bands, one on either side of the head, separated from a central black band, which passes between the tentacles over the head, by pale lines running from the base of the tentacles. The sides of the head and foot are mottled and spotted; mantle also, but to a much greater extent. Shell-lobes closely papillated. Foot-sole divided into three planes, of which the median one is the largest, all marked with faint transverse lines; foot-fringe marked with broad chocolate-brown lineoles. Immediately above the foot-fringe is a distinct line or groove, which marks off the whole of the upper portion of the animal from the foot-sole (fig. 29). - Length in alcohol 31 millim., breadth of foot-sole in the anterior region 5 millim. Habitat. Paka Paka, Kina Balu (10,000 ft.), on leaves (A. H. Everett). With this species w e have associated the name of Dr. Heinrich Simroth, the distinguished malacologist of Leipzig, and founder of the genus. 1. Anatomy. Visceral^ Mass, 6rc.-The salivary glands are similar to those described in Microparmarion pollonerai, as are also the jaw and |