28 CURRENT LITERATURE. 



Prof. Andreae's paper contains four very interesting articles upon various species 

 of molluscs from Central and East Asia. He first treats of the genus Cathaica, 

 Mlldff., which is divided into the following subgenera: Eucathaica, nov. (type C. 

 fasciola, Drap., = 2-)yrrhozo>ia, Phil.), Pliocathaica, nov. (type O. pulveratri.r, v. 

 Mart.), Xcrocathaica, nov. (type G. kreeitncri, Hilb.), Pscudiberus, Ancey (type 

 P. tectumsincnsc, v. Mart), and Oampylocathaica, nov. (type G. przewalskii, v. Mart.) 



In the second article comparisons are instituted between various Asiatic and 

 European genera. 



The variation of Campylocathaica pr~cwalsHi, v. Mart., is dealt with in the 

 third article, followed by a note on the variation of Cainpylaca frigida, Jan. 



A short comparison of certain Chinese and European land molluscan forms from 

 alluvial deposits, concludes the series. 



Sykes, E. R. — Digesta Malacologica. ^jo. I. A Summary of the American 

 Journal of Conchology. 1865 — 1872. pp. vii + 46. London: 1901. William 

 Wesley and Son. 



We heartily congratulate Mr. Sykes on the appearance of the first number of his 

 " Digesta Malacologica," which deals with the 7 volumes of the 'American Journal 

 of Conchology' (1865— 1872). 



The general arrangement is that adopted in the ' Zoological Record.' The date 

 of publication of each of the 29 parts is given, together with the pagination and 

 number of plates ; 232 titles are quoted, followed by the two sections ' Biology ' 

 and ' Systematic' 



If sufficient support be forthcoming, Mr. Sykes hopes to deal with other period- 

 icals such as the ' Zeitschrift fur Malakozoologie,' 'Annals and Magazine of Natural 

 History,' etc. 



The value of such digests is obvious, and we trust malacologists will at least 

 show their appreciation of the care and patience the author has expended, by 

 quickly exhausting part i. It is a publication of great value and usefulness, and we 

 wish its author every success with this and future issues. 



Dall, W. H. — On a genus ( Phyllaplysia ) new to the Pacific Coast. Naut., 1900, 

 vol. xiv, pp. 91 — 92. 



P. taylori, n. sp. found on floating sea-grass near Nanaimo, Vancouver Island. 



Dall, W. H. — A new species of Plcurohranchus from California. Naut., 1900, vol. 

 xiv, pp. 92—93. 



P. californicus, n. sp. from San Pedro. 



Dautzenberg, Ph. — Description d'une espece nouvelle du genre Gyrcna provenant 

 des Nouvelles-Hebrides. Journ, de Conchyl., 1900, vol. xlviii, pp. 105 — 

 108, pi. V. 



Cyrcna ingnis is the new species, characterised by its large size and solid shell. 



Dautzenberg', Ph. — Description d'une espece nouvelle appartenant au genre 

 Hemicardium. Journ. de Conchyl., 1900, vol. xlviii, pp. 5— 8, pi. i, fig. 3 — 6. 



Ilcvikardinvz tegulntum, n. sp. is evidently nearly related to the //. rincdo of 

 Linne ; the author has, however, carefully compared it with young and adult forms 

 of the latter species, and finds certain well marked differences. 



