OCR Text |
Show 182 MR. A. GARRETT ON THE TERRESTRIAL [Feb. 15, p. 126; Schmeltz, Cat. Mus. Godeff. v. p. 92 ; Canefri, Malac. Viagio Mag. p. 85. Otostomus (Placostylus) seemanni, Semper, Phil. Landmoll. iii. p. 157, pl. 17. fig. 9. This fine large ground-species is confined to Kandavu Island, where it appears to be abundant. Though subject to considerable variation in size and shape, it may, however, be distinguished by its rather slender form, whitish horn-colour beneath a yellowish or olive-brown epidermis, which is sometimes ornamented with waved or zigzagged stripes. The surface, though coarsely striated with lines of growth, is seldom marked by transverse corrugations. The auriculate-shaped aperture is narrow, white, though sometimes tinted with fulvous, and the white lip is considerably expanded and slightly reflected and frequently contracted above. Length from 52-77 millim. Like all the ground-species, it is very frequently decorticated. 6. PLACOSTYLUS KANTAVUENSIS. Bulimus kantavuensis, Crosse, Journ. de Conch. 1870, p. 250 ; 1871, p. 105, pl. 5. fig. 3 ; 1875, p. 10 ; Pfeiffer, Mon. Hel. viii. p. 29. This is also a terrestrial species, and inhabits Kandavu Island, where it was discovered by Mr. Brazier. It is described as a rather solid, cylindrically-fusiform species, with longitudinal rugose striae and obsolete submalleations. Colour ruddy white, with reddish apical whorls. The epidermis is olive-yellow, with longitudinal waved whitish stripes. The last whorl is subcylindrical, compressed on the middle, and the auriform aperture and the widely expanded peristome are whitish. Length 43 millim. I have never seen an example of this species. 7. PLACOSTYLUS KOROENSIS. Bulimus koroensis, Garrett, Amer. Journ. Conch. 1872, p. 236, pl. 18. fig. 9 ; Pfeiffer, Mon. Hel. viii. p. 29; (Placostylus) Crosse, Journ. de Conch. 1875, p. 9, pl. 1. fig. 5; Schmeltz, Journ. des Mus. Godeff. Heft xii. 1876, p. 161. Placostylus koroensis, Schmeltz, Cat. Mus. Godeff. v. p. 92. Occurs in great profusion on the ground in the central valleys of Koro Island, where it is peculiar. It is very closely allied to the preceding species, which it resembles in shape and sculpture. Colour corneous or tawny yellow, with a white or luteous aperture and rather widely expanded white peristome. Length 53 millim. It is very frequently distorted and very seldom exhibits traces of a fulvous epidermis, which is disposed in irregular longitudinal strips and patches. Examples sent to Mr. Crosse were, by that learned conchologist, regarded as distinct from his B. kantavuensis. 8. PLACOSTYLUS HOYTI. Bulimushoyti, Garrett, Amer. Journ. Conch. 1872, p. 234, pl. 18. |