78 BIBLIOGRAPHY OF 1 879. 



variety of Say's H. diodonta ; describes the animal, its habits and 

 distribution. During the excursions to the highlands of Kentucky 

 and Tennessee which produced this shell were also collected 

 other species including the rare H. Wetherbyi Bland. 



White (C.A., M.D.)— Descriptions of new species of in- 

 vertebrate Fossils from the Carboniferous and 

 Upper Silurian rocks of Illinois and Indiana. 



Proc. Acad. Nat. Sci. Philad., 1878, pp. 29 to 37. 



The new mollusca are Ptilodyctia triangulata (Polyzoon) 

 Asiarteila Gurleyi 2i\\d Nautilus Danvillensts, all from the coal- 

 measure strata, Danville, Illinois. 



White (F. Buchanan, M.D., F.L.S.)— Mollusca of Glen Tilt, 

 Scotland. — Scot. Nat, April 1878, vol. iv., pp. 246 to 248. 



The interesting feature of the mollusca is the variation of 

 their distribution within the glen, owing to its varying geological 

 structure. Zr^//x//^i-(;a is abundant. The other species mentioned 

 are H. arbustorum, and var. alpestrts, If. 7ie7/ioralis, H. horfensis, 

 H. rotundata, If. conctnna, Zonites crysialHnus, Z. nitidus, Z. 

 alliarius, Vitrina pellucida, Lifuncea truncatula, Bulimus obscurus, 

 Clausilia perversa and var EverefHi, Carychium minimum and 

 Arion ater. 



Wood (James W.) — Conchological Notes : Switzerland, 



1877. — Hobkirk and Porritt's Nat, March 1878, vol. iii., 

 pp. 113 and 114. 



In this paper, which was originally read before the Concholo- 

 gical Society, Mr. Wood discourses on the shells which occurred 

 to him at the Lake of Lucerne, Interlaken, and Neuchatel. 



Woods (Rev. J. E. Tenison, F.G.S., F.L.S.)— On some new 

 IVlarine Mollusca. — -Trans, and Proc. Roy. Soc. Victoria, 

 vol. xiv. (issued July nth, 1878.) 



