A manual of the Mollusca; A treatise on recent and fossil shells
(This historic book may have numerous typos and missing te...)
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 Excerpt: ...Eydoux and Souleyet. Example, S. buiimoides, PI. XTV., Fig. 42. Synonyms, Heterofusus, Fleming. Heliconoides, D'Orbigny. Peracle, Forbes. Seaea, Ph. Shell minute, hyaline, sinistrally spiral, globose or turreted, smooth or reticulatod; operculum thin, glassy, semilunar slightly spiral, with a central muscular scar. Animal with narrow, simple fins, united by a simple, transverse operculigerous lobe; mouth central, with prominent lips. Distribution, 12 species. Greenland and Norway to Capo Horn, Indian Ocean, Pacific. P Cheletropis, Forbes. Etymology, chele, a claw, and tropis, a keel. Synonym, Sinusigera, D'Orbigny. Type, C. Huxleyi, PI. XIV., Fig. 43. Shell dextrally spiral, imperforate, double-keeled; nucleus sinistral; aperture channelled in front; peristome thickened, reflected, with two claw-like lobes. Animal gregarious in the open sea. The species comprised in this and the following genus are young gasteropods. (See pp. 212, 225.) Distribution, 2 species. South America and South-east Australia. Another minute spiral shell may be noticed here:--Macgillivbayia, Forbes. Named after its discoverer, the naturalist to H.M.S. Rattlesnnke. Type, M. pelagica, PI. XIV., Fig. 44. Shell minute, dextrally spiral, globular, imperforate, thin, horny, translucent; spire obtuse; aperture oblong, entire; peristome thin, incomplete; operculum thin, horny, concentric, nucleus sub-external. Animal with 4 long tentacles, mantle with a siphonal process; foot expanded, truncated in front, furnished with a float after the manner.of Ianthina; lingual dentition closely resembling Jeffreysia. Distribution, 3 species. Taken in the towing-net off Capo Byron, East coast of Australia, 15 miles from shore, floating, End apparently gregarious. (J. Macgillivray.) Mindoro, North A.tlant...
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