Reviews — Indian Geology and Physical Geography. 181 



family, the Purpuridse, is a new genus, Paramorea (type, P. lirata, 

 n.sp.), which can be distinguished from Morea by the presence of 

 a narrow, oblique chink instead of a well-defined umbilicus, by an 

 acute spire, and by the absence of the strongly reflected inner lip. 



Two genera new to the Cerithiidse are also established. Nudivagus 

 (type, N. simplicus, n.sp.) includes a group of simple, elongately 

 conical shells, with no external ornament. To this genus, more- 

 over, Stoliczka's Indian Cretaceous Cerithium (Fibula?) defectum 

 and Hudleston's Pseudomelania astonensis, from the Inferior Oolite 

 of England, are also referred. Astandes (type, A. densatus, n.sp.), 

 a small trochoid shell, resembles Conrad's Cerithioderma in outline, 

 but its spire is less acuminate and the umbilicus imperforate. By its 

 short anterior canal, also, it can be distinguished from Gardner's 

 Paladmete, which otherwise it resembles. Included in this new 

 genus is Holzapfel's Tritonium cretaceum, from the Aachen Cre- 

 taceous. 



Acirsa and Hemiacersa belong to the Scalidae ; of the former two 

 new species are described and one of the latter. The form named 

 Chemnitzia cerithiformis by Meek and Worth en is now considered 

 to be an Acirsa, and Kaunhowen's Maestrichtian Scalaria dense- 

 striata is probably comparable with A. corrugata, n.sp. De Boury's 

 Hemiacersa is enlarged by the inclusion of H. cretacea, n.sp., of 

 which the single example is notable on account of its being the first 

 recorded from the Upper Cretaceous. The present contribution to 

 the systematic study of this fauna ends with the establishment of 

 the new genus Creonella, belonging to the Pyramidellidse. The 

 genotype, C. triplicata, n.sp., is a small, slender, conical shell, like 

 Pgramidella, and is characterized by three conspicuous folds on the 

 inner lip. 



We await with interest the results of Dr. Bruce Wade's further 

 studies on this fauna. 



C. P, C. 



II. — A Bibliography of Indian Geology and Physical Geography, 

 with an Annotated Index of Minerals of Economic Value. 

 Compiled by T. H. D. La Touche, M.A., F.G.S., F.A.S., Bengal. 

 Published by Order of the Government of India, and printed in 

 Calcutta for the Geological Survey of India. London : Kegan 

 Paul & Co. Imp. 8vo. Part I (1917), pp. xxviii + 571, 

 price 5s. Ad. ; Part II (1918), pp. 490, price 6s. 



THE author of this important work is a man well qualified for the 

 task, having served for thirty years upon the staff of the 

 Geological Survey of India, to the " Records" of which he was himself 

 a frequent contributor. During his long service he was a careful 

 and diligent compiler of references bearing upon both geology and 

 physical geography and on the mineral resources of India. He had 

 also the advantage of being able to make use of Mr. R. D. Oldham's 

 very complete bibliography, presented to the Geological Survey of 

 India in 1888. The earlier additions made by the author to 

 Mr. Oldham's work have been largely due to his long English residence 



