The Cambridge natural history . oint ofnumbers and variety, quite unequalled in the world. There arein all as many as 56 genera and more than 440 species, thelatter being nearly all peculiar. The principal features are the 148 JAMAICA Glandinae, the Helicidae, and the land operculates. The Glan-dinae belong principally to the sub-genera Varicella, Melia, andVolutaxis, Streptostyla being absent, although occurring in Cubaand San Domingo. There are 10 genera of Helix, of whichPleurodonta is quite peculiar, while Sagda (13 sp.) is commononly with San Domingo (2 sp.), and Leptoloma (8 sp.) on
The Cambridge natural history . oint ofnumbers and variety, quite unequalled in the world. There arein all as many as 56 genera and more than 440 species, thelatter being nearly all peculiar. The principal features are the 148 JAMAICA Glandinae, the Helicidae, and the land operculates. The Glan-dinae belong principally to the sub-genera Varicella, Melia, andVolutaxis, Streptostyla being absent, although occurring in Cubaand San Domingo. There are 10 genera of Helix, of whichPleurodonta is quite peculiar, while Sagda (13 sp.) is commononly with San Domingo (2 sp.), and Leptoloma (8 sp.) onlywith Cuba (1 sp.) The single Strohila seems to be a stragglerfrom a N. American source. Macroceramus has only 2 species asagainst 34 in Cuba, and of Cylindrella, in which Cuba (130 sp.)is so rich, only 36 species occur. The genus Leia, however (14sp.), is all but peculiar, occurring elsewhere only in the neighbour-ing angle of San Domingo, which is so closely allied with complete absence of Strophia is Fro. 230.—Characteristic Jamai-can and Haitian Mollusca:A, Sagda epistylium. Aliill.,Jamaica ; B, ChondropomasalleoMum Pfr., San Domingo ;C, Eutrochatella TaMkerrilleiGray, Jamaica ; D, Ci/li)i-(IreUa agnesiana C. B. Ad.,Jamaica. The land operculates form the bulk of the land fauna, thereIjeing actually 242 species, as against 221 of land Pulmonata, aproportion never again approached in any part of the many as 80 of these belong to the curious little genus Stoa-stoma, which is all but peculiar to the island, one species havingl^een found in San Domingo, and one in Porto Eico. Geomelaniaand Chittya,two singular inland forms akin to Truncatella, are quitepeculiar. Alcadia reaches its maximum of 14 species, as against4 species in San Dondngo and 9 species in Culia, and Lueidellais common to San Domingo only; but, if Stoastoma be omitted,the Helicinidae generally are not represented by so many or byso striking forms as in Cuba, which has 90 speci
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
