68 CURRENT LITERATURE. 



On the Development of Chiton. (John Hopkins Univ. Circ, xi., pp. 79-S0.) 

 M. M. Metcalf. 



Morphology of the Prosobranchiata. (Morph. Jahrb., B. 18, p. 451.) 

 B. Haller. 



The Genital Organs of Helix. (Zeit. f. wiss. Zool., B. liv. , pp. 386-423.) 

 H. v. Ihering. 



On the Paired Nephridia of Prosobranchs, &.C. (Q. J. M. S., vol. 33, 



pp. 587-623.) R. v. Erlanger. 



Morphology of Lamellibranchiata. (]. Hopkins' Univ. Circ, xi., p. 80.) 

 J. H. Kellogg. 



EMBRYOLOGY AND DEVELOPMENT. 

 On the Viviparous Nature of Balea. (Jy. Conch., 1892.) Thomas Rogers. 



HABITS AND HABITAT. 



Some Observations on a Living Argonaut. (Arch. Zool. Exper. et Gen., 

 v. x., p. 57.) 



Prof. H. de Lacaze-Duthiers has recently made some very interesting observa- 

 tions on a living Mediterranean Argonaut, the results of which tend to show that 

 previous accounts were very largely imaginative. When brought to the laboratory 

 the animal dropped its shell, but on both being placed in the aquarium it soon 

 reinstated itself again, and continued to float at the surface until it died. 



The Genus Rissoa. (Brit. Nat., p. 155, 1892.) B. Tomlin. 



CLASSIFICATION AND NOMENCLATURE. 



The Genera Hadra and Camaena. (Nachr. Deutsch. Malak. Gesell., pp. 

 69-73, 1892.) 



Mr. H. A. Pilsbry acknowledges and replies to Dr. von Mollendorffs criticism 

 (Nachr. (1891), p. 195) on his arrangement of the genera Hadra and Canuvna in 

 the "Manual of Conchology. " 



On the Atlanta-like Larval Mollusc. (Ann. and Mag. N. H., p. 107, 1892.) 

 Prof. W. C. M'Intosh. 



NEW GENERA AND SPECIES. 



(See also under " Special Fauna" etc.) 



Veronicella virgata. (Journ. Inst. Jamaica, p. 96, 1892.) 



Mr. T. D. A. Cockerell describes this species, which anatomically somewhat 

 resembles v. fioridana. The species is referred by Dr. Simroth to his group 

 " Acrocaulier. " Mr. Cockerell also mentions a species of Agriolimax — probably 

 Agr. Levis — which is of interest, as the genus does not appear to have been 

 hitherto recorded from the West Indies. 



The Shells of the Victoria Nyanza. (Ann. & Mag. N.H., p. 121, 1892.) 



Mr. Edgar A. Smith has an interesting article on the shells of the Victoria 

 Nyanza or Lake Oukerewe. The first shells recorded from this lake were five 

 species by Dr. H. Dohrn in 1864 (P.Z.S., 1864), but as there is considerable 

 doubt as to whether these really were from the Lake, Mr. Smith excludes them 



