THE NAUTILUS. 107 
ONCHIDIUM AND THE QUESTION OF ADAPTIVE COLORATION. By 
W. J. Crozier and L. B. Arey (Amer. Nat., vol. 53, pp. 415- 
430, Sept.—Oct., 1919). 
FAUNA OF THE CHILKA LAKE, MoLuusca, GASTEROPODA AND 
LAMELLIBRANCHIATA by N. Annandale and 8. Kemp. An- 
ATOMY OF SOLEN? FoNEsI by E. Ghosh. NuprprancuHiata by 
Sir Charles Eliot (Mem. India Mus., vol. 5, No. 4, pp. 827- 
379, pls. 14-16). The occurrence of Ostrea virginica in the 
warm waters of India seem very remarkable or problematic. 
THE INDIAN VARIETIES AND RACES OF THE GENUS TURBINELLA. 
By J. Hornell, witH NoTE on THE GEoLOGicaL History oF Tur- 
BINELLA IN InpIaA. By E. Vredenburg (Memoirs Indian 
Museum, vol. 6, No. 2, pp. 109-125, pls. 10-12). An exhaus- 
tive study of the variation of the Chank shell ( Turbinella pyrum 
Linn.). Four new varieties are recognized, obtusa, acuta, glo- 
bosa and comoriensis. The author’s ideas of the rule of priority 
seem somewhat vague as he makes rapa Gmelin a form of his 
new var. obtusa. 
FRESH-WATER MusseLs aND Musser, INDUSTRIES OF THE 
Unirep States. By Robert E. Coker (Bull. Bureau of Fish- 
eries, Oct., 1919, vol. 36, pp. 13-89, pls. 1-46 and map). A 
most interesting account of a great industry. Part I, describes 
and figures the species of economic value, about 41 in number. 
Part 2, the value and extent of the fishery, apparatus, methods, 
etc. Part 5, the manufacture of pearl buttons, with numerous 
illustrations.—C. W. J. 
PROCEEDINGS OF THE Ma.acoLocicaL Soctery or Lonpon, 
Vor. 13, Prs. 5 ann 6, Ocr., 1919. 
Description of two new species and a new sub-genus of land shells 
from China. By G. K. Gude, pp. 118, 119. A new Trocho- 
morpha (T. lancasteri) and a new sub-genus and species of Cath- 
aica, C. ( Trichocathaica) lyonsae, are described and figured. 
Notes on Hygromia limbata (Drap.). By Hugh Watson, pp. 
120-182, pls. 2 and 3. A full description of its anatomy, ete. 
On Helix revelata Britt. Anctt. (non Férussac, nec Michaud), 
and the Validity of Bellamy’s name of Helix subvirescens in liew of 
ut for the British Mollusc. By A. S. Kennard and B. B. Wood- 
ward, pp. 133-136. 
