Download - WordPress – www.wordpress.com

616 EDUAK. A. SMITH.which is a parallel furrow and then a raised ridge or rounded keel. The convex side is coveredwith a thin yellow pellicle and is marked with lines of growth.241. Polinices mamilla, Lamarck {Natica mamiUa, Reeve, 37, IX.) Ill, IX, XTI, XV.242. Polinices albumen, Lamarck {Natica albumen. Reeve, 37, IX.) III.243. Mamilla melanostoma, Lamarck {Natica melanostoma, Reeve, 37, IX.) VI, XV.244. Mamilla simiae, Deshayes {Natica simiae, Reeve, 37, IX.) IX.Family lANTHINIDAE.245. lanthina communis, Lamarck? 37, XI. IX.The figures most resembling the specimens from the above station are Reeve's figures of/. affinis (figs. 2 a, b). That so-called species and several others described in the same monographare probably mere varieties of one variable species. (See Tryon, Ma^i. Conch, vol. ix. pp. 36, 37.)Family SOALIDAE.246. Scala replicata, Sowerby {Scalaria replicata, Sowerby, 40,6,7.) IX.247. Scala censors, Crosse and Fischer {Scalaria consors, Tryon, 41, IX.) XI.A single example considerably larger than the type, being 18 mm. long, and 7 mm. in width.The locality given by Crosse and Fischer is St Vincent's Gulf, S. Australia, but four specimens,supposed to include the type among them, were presented to the British Museum in 1870 byMr G. F. Angas and were marked "Ceylon" by him. The Maldive example has a dark line atthe suture.248. Scala (Cirsotrema) texta, n. sp. (PI. XXXV. fig. 23). X.Testa elongata, subulata, imperforata, solidiuscula, albida, longitudinaliter plus minus plicata,varicibus paucis obliquis instructa, spiraliter sulcata et tenuiter punctato-striata, lineis incrementitenuissimis obliquis sculpta ; anfractus circiter 12, supra valde declives, vix concavi, in medio obtuseangulati, sutura obliqua irregulariter corrugata sejuncti, ultimus ad peripheriam angulatus, costis adangulos subnodosis; apertura oblique ovata ;peristoma continuum, expansum, margine externo varicecrasso circumdato. Longit. 17 mm., diam. 5; apertura intus 3 longa, 2 lata.This very distinct species is well-characterized by the fine cancellated sculpture, like a pieceof linen, the interstices being minutely punctate. The whorls exhibit spiral shallow sulci andintervening raised ridges, both the latter and the grooves being covered with the spiral and longitudinalstriae. Every second or third whorl exhibits an oblique varix, and the upper ends of theplicae form a very irregular puckered or dentate sutural line.spirallyAllied to S. bicarinata, Sowerby, but much larger, of different form, differently plicate andsulcate.Family PYRAMIDELLIDAE.249. Pyramidella corrugata, Lamarck, 23. XV.2.50. Pyramidella nodicincta, A. Adams, 40, b, II. XIV.251. Obeliscus dolabratus, Linn. {0. dolabratus and 0. terebelhrni,' ^0,b, II.) IX, XV.