/ 2 TIiK NAUTILUS. 



we owe :i knowledge of the anatomy of these forms, his ideas of the 

 succession and relationships of the genera will naturally carry great 

 weight. Godwin-Austen is emphatic in opinion that the slug-like 

 genera trace their ancestry to forms with well-developed shells, 

 Macrochlamys standing in an ancestral relation to Austenia and 

 Girasia. This goes to confirm the doctrine that naked forms are 

 never primitive pulmonates. The address will well repay careful 

 reading by those interested in land snails. 



Messrs Wm. Moss and W. M. Webb give the results of the dis- 

 section of Trac/tycystis, Dorcasia and Isomeria. In Dorcasia globulus 

 the genital system was found to be simple, as in Polygyra, but the vas 

 deferens is bound to the penis distally. Isomeria subcastanea is the 

 first species n\' its subgenus to be dissected, and the anatomy proves it 

 to have been rightly located in the genus Plurodonte. It has a special 

 feature in having the penis retractor muscle inserted on the epiphallus, 

 as in the allied Oriental forms. '' The male organs in particular re- 

 semble those of Chhrites porteri more nearly than they do P/euro- 

 donte." 



In his notes on the non-marine molluscan fauna of the Hawaiian 

 Is., Mr. Ancey gives descriptions, notes and figures of numerous 

 little-known and new forms; a new genus, Thaanumia,is proposed. 

 In a succeeding paper, Mr. Sykes figures numerous hitherto unfigured 

 Hawaiian land shells described by Ancey and Gulick. This is a 

 most valuable and welcome contribution. 



A new Dinoplax, D. fossus, is described by Mr. E. R. Sykes. 

 Like the type of the genus, it is from South Africa. 



Mr. Smith describes a large snail from Perak as Ucnn'plecta 



jliiirpri. 



Mrs. Agnes Kenyon gives the history of the seven specimens of 

 Voluta RoadnightcB at present known, all being from various localities 

 on the coast of Victoria. The largest measures 8 inches in length. 



The number closes with an article by Mr. II. Suter, describing six 

 new forms of New Zealand land shells. The soft anatomy of several 

 is figured, and in Flammulina (Pyrrha) virescens a peculiar flat ap- 

 pendiculum, inserted opposite the entrance of the spermatheca, was 

 found. This is a new structure for the Eudodontidce, and the ex- 

 amination of allied species will be looked for with interest. 



