| OCR Text |
Show 1895.] MOLLUSCA OE THE ANDAMAN AND NICOBAR ISLANDS. 447 Generative organs.-The male organ is long, and the amatorial organ is present. The margin of the branchial sac from anal orifice is conspicuously mottled with black and white showing through the shell. It has a peculiar capreolus, or spermatophore, like M. jainiana, G.-A., from Parisnath, Land & Kreshw. Moll. India, pi. xxviii. figs. 2 6, 2 c. 10. MACROCHLAMYS PSEUDAULOPSIS, G-.-A., Nevill MS. (p. 441). This is No. 10S of Nevill's ' Hand-list' (p. 32) and described by me (I. c). This name occurs on labels in Mr. de Koepstorff's collection in Nevill's handwriting. The jaw in this species is very much curved with strong central projection. It possesses the amatorial organ. G-enus KOTULA. 1. KOTULA MASSONI, Behn (p. 441). Helix massoni, Behn, Pfr. Mon. Hel. iv. p. 344 (1859). Rotula massoni, Semper, Keise, p. 40, pi. iii. f. 28, pi. vii. f. 17. Nanina (Rotularia) massoni, Morch, Journ. de Conch, ser. 3, xii. p. 308 (1872), et xvi. p. 354(1876). This shell was described from a single example. The animal has a small right shell-lobe and one small left shell-lobe as in Macrochlamys. It is very pale in colour with black tentacles. The odontophore is also as in Macrochlamys. Jaw with a central projection. 20 to 2 5 - 1 2 - 1 - 1 2 - 2 0 to 25. Semper on plate vii. gives the form of the teeth exactly ; his specimen was from the Museum at Kiel, ex coll. ' Galathea.' The generative organs are also figured by Semper; it has no amatorial organ, and in this respect it coincides with ccelatm-a and rufa, both from Bourbon, the home of cletecta, which Albers took as the type of his genus Rotula. I am inclined to think that R. roepstorffi, is only a synonym, the transverse sculpture on the apical whorls would disappear in old shells. Genus MICROCYSTINA. 3. MICROCYSTINA WARNEFORDI, Nevill MS., G.-A. (p. 441). This genus and species are described by me in the ' Land and Freshwater Mollusca of India' (p. 13, pi. iii. f. 8). Jaw very curved, central projection well developed. Genus MICROCYSTIS. 1. MICROCYSTIS CAMORTENSIS, Nevill MS. (p. 441). A specimen of this species is in the Calcutta Museum, collected |
