OCR Text |
Show 1891.] MR. E. A. SMITH ON NEW SPECIES OF SHELLS. 489 entirely without bands excepting that at the suture. The bands do not extend quite to the outer lip, but stop short about 4 millims. from the margin. Three of the four specimens examined have a shallow concentric depression or furrow around the middle of the base of the body-whorl; but this is not an essential characteristic, as there is not the slightest trace of it in the fourth shell. H. tomasinelliana of Tapparone-Canefri is very like this species in many respects, but is different in form, being higher in proportion to the width and with a flatter base. PLACOSTYLUS GUPPYI. (Plate XL. fig. 6.) Testa rimata, elongato-ovata, superne acuminata, solidiuscula, rufescens, epidermide fusca, superne plus minus detrita, induta, longitudinaliter rugose striata, interdum in anfractu ultimo obsolete malleata ; anfract. 5-6, celeriter accrescentes, supremi tres planiusculi vel vix convexi, penultimus con-vexiusculus, ultimus magis convexus, magnus, oblongus, infra suturam obliquam submarginatus, leviter corrugato-plicatus ; apertura inverse auriformis, longit. totius \ superans, longe intus pallide rufescens, labrum versus saturatior; peristoma incrassatum, leviter expansum, rufescens, marginibus callo tenui albido junctis, columellari in regione umbilici late expanso, in apertura plicam albam validam formante; apertura tuberculo albo prominente supra plicam columellar em armata. Longit. 80 millim., diam. maj. 3 7 ; apertura intus 40 longa, 19 lata. Hab. Solomon Islands. Mr. Brazier does not know the particular island where this species is found. He possesses only five specimens of it, and of these he has most liberally placed two of the finest in the British Museum. The species does not compare closely with any other form. It is rather ventricose, but less so than PI. eddystonensis ; but in other respects it is quite different. The epidermis is of a rich brown colour, here and there striped with a darker tint. The columellar fold and the tubercle above are strongly developed. I have named this interesting species after Dr. H. B. Guppy, who has considerably advanced our knowledge of the fauna of the Solomon Islands. PLACOSTYLUS CALUS L. (Plate XL. fig. 7.) Testa elongata, perforata, superne rufescens, in anfr. ultimo pallidior, epidermide fiavo-olivacea tenui induta, incrementi lineis tenuibus striata, sub lente microscopice et irregulariter transversim striata; anfractus 6, celeriter crescentes, supremi parum convexi, ultimus elongatus, magnus, per oblique descendens, ad sinistram peculiariter inflatus vel gibbus ; 1 From KOXOS, beautiful. |