16 



in a paper published in this year. These papers are invaluable to the 

 South Australian conchologist, as a fair proportion of shells are common 

 to the two areas. Mr. Angas, in his papers, op. cit., 1865, not only 

 gives lists of names, but adds remarks on the habitats and distribution 

 of each species, and supplies references to works wherein the species are 

 described or figured. • 



The bibliography is certainly voluminous, but a large number of 

 the descriptions and figures are collected together in a monographic form 

 in Reeve's " Iconica Conchologica." The University Library contains the 

 monographs of the more important Australian genera, and the following 

 ■works dealing with Australian shells : — Lamarck, ' Animaux sans Verte- 

 bres,' 7 vols.; Menke, ' Molluscorum Novte Hollaudite ; Quoy & Gaimard, 

 ' Voyage de 1' Astrolabe ; Zoology of the Voyage of H.M.S. Samarang ; 

 Journal de Conckyliogie ; Cruise of H.M.S. Curacoa; Gould's ' Otia. 



A glance at the numbers of representatives of each class of the 

 mollusca, recorded by Mr. Angas, reveals the paucity of cephalopods and 

 brachiopods, and the absence of pteropods ; whilst a reference to the 

 papers discovers the absence of an entire order — that of Nudibranchs or 

 sea slugs. The poverty of the brachiopods is doubtlessly real, though a 

 second species, Kraussia Lamarckiana, is known by me to occur; but it 

 is not so with regard to the cephalopoda. Ten species of naked cephalo- 

 pods I have collected in St. Vincent's Gulf, but so little attention has 

 been paid to animals of the class in Australia that our book knowledge 

 respecting them is very meagre. A careful examination and description 

 of all the existing species would well repay the researches of any one of 

 our naturalists. Quoy and Gaimard describe some Australian cuttlefish, 

 and D'Orbigny's Monograph, and Gray's Catalogue of ths classes are in- 



The absence of pteropods and nudibranchs from Mr. Angas's lists may 

 be intentional on the author's part, and it is not unreasonable to infer 

 that examples of each class exist on and off our shores, as they are both 

 well represented in the seas of the east coast of the continent. Of Ptero- 

 pods, 14 species are known in New South Wales. The chief works 

 relating to the class are : — Eydoux and Souleyet, ' Voyage of the Bonite,' 

 (1836-37), and Rang and Souleyet, ' Histoire Nat. des Mollusques Ptero- 

 podes,' 5 pi. (1852.) The nudibranchs of New South Wales are 34 in 

 number, most of which are described as new, and ^beautifully illustrated 

 by M. Crosse, (*) Journal de Conchyl, 1864. 



The classes Polyzoa and Tunicata are not noticed by Mr. Ansas, the 



