Manual of Conchology; Structural and Systematic. with Illustrations of the Species Volume 4

Manual of Conchology; Structural and Systematic. with Illustrations of the Species Volume 4

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1882 edition. Excerpt: ...the two species in distinct groups. I do this, whilst expecting that R-eeve's suspicion of their identity will be confirmed, as it is a case paralleled by many others in this genus, all pointing to the evanescent nature of the sculpture and patterns of coloring. In fact, unless we setup an artificial standard for the separation of species, in some genera, we should have no species remaining, to speak of. T. rosea, Kiener, not Duclos (fig. 522), T. tenuilirata-, Sowb. (fig. 523), T. rubricata, Reeve (fig. 524), T. subtruncata, Sowb. (fig. 525), T. Layardi, Arracan. Whitish, with four revolving series of chestnut maculations; intervals of the ribs with punctate revolving striae. maculated with chestnut or chocolate color. Length, 1'25 inches. Red Sea, Andaman Isles, Cochin China, Zanzibar, Mauritius. Sowerby figures a variety in which the ribs are less numerous but more prominent than in the type. T. PUNCTURATA, Sowb. P1. 53, fig. 534. Pink, maculate and flammulate with reddish brown; interstices ' of the ribs profoundly punctate. Length, 20 mill. Reeve's figure is from a faded specimen. G. and H. Nevill have described:1 var. Andamanica, but it has no difi'erential characters. It is possible that T. obeliscus is a non-angulated form of T. cruentata, Chemn. Fawn color, lighter on the periphery. Length, '6 inch. Red Sea. A juvenile shell with no distinctive features. It may be a young obeliscus. T. FLEXICosTATA, Garrett. An unfigured species, allied to T. obeliscus. Length, '6 inch. ' brown with a white superior band. Length, 1 inch. Habitat unknown. Fawn-colored, light banded in the middle. Length, '9 inch. Habitat unknown. One of a number of very doubtful specimens, once forming part of a private collection, and which, ...
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Product details

  • Paperback | 98 pages
  • 189 x 246 x 5mm | 191g
  • English
  • Illustrations, black and white
  • 1236949560
  • 9781236949561