26 
Some New Books 
of wing growth, the hidden type of wing growth, wingless insects, the 
class and orders of insects, growing insects and their surroundings, and 
the problems of transformation. There is no attempt at padding, and 
the closely -printed pages reveal a wealth of scientific information, 
written in a style which will appeal quite readily to an average reader, 
but is positively fascinating to a naturalist. 
Of a perhaps more technical nature, though equally essential to the 
student of insects, is Typical Flies : A Photographic Atlas, by E. 
K. Pearse (second series ) , 4to. Cambridge University Press, xiv.X38 
Carphotricha guttularis Mg. £ 4X 8 mm., $ 4’5X 9 mm. 
Found by sweeping among Galium verum at Copford, Essex. 
New Forest, but not common ’ (Adams). ‘ A dark brown fly, legs and 
wing markings bright red brown.’ 
pp., 15/-. In this Atlas are 125 blocks, many containing two illustrations, 
which will be of incalculable value to the growing school of students of 
the diptera. Hitherto this branch of natural history has been sadly 
neglected because of the difficulty of identifying captures, but, thanks to 
the researches of Wingate, Bagnall, Harrison, Cheetham and others, as 
evidenced by a perusal of the pages of The Naturalist, this difficulty is 
being overcome, and we even hear of excursions of dipterists, while twenty 
years ago it was difficult to find one. We are permitted to repro- 
duce two of the illustrations which, with the description, will give an 
idea of the nature of the Atlas. 
Exploration of Air Out of the World North of Nigeria, by Angus 
Buchanan. London : John Murray, 253 pp., 16/-. Mr. Buchanan has 
had exceptional opportunities of visiting a portion of central Sahara 
O' 
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N aturalist 
