THE ANNAITX 
MAGAZINE OF NATURAL HISTORY, 
(NINTH SERIES.] 
No. 42. JUNE 1921. 
LVIL.—Fossil Arthropods in the British Museum.— VI. 
Oligocene Insects from Gurnet Bay, Isle of Wight. By 
T. D. A. Cocxgrext, University of Colorado. 
Tue present part continues the descriptions of insects from 
Gurnet Bay ; the abbreviations used are the same as before. 
In the study of the Diptera | have been constantly indebted 
to Mr. F. W. Edwards for advice, but he is, of course, not 
responsible for my treatment of the species. In sorting out 
the materials I found a long series of Culicide, which 1 have 
not studied, as Mr. Edwards has kindly promised to investi- 
gate them at a later date. All the species now described 
are figured, and | have not thought it worth while to describe 
in words the features which can be much better understood 
from the illustrations. Thirty-seven species of Diptera are 
described in the present paper, all apparently referable to 
existing genera, or so close to them that new generic names 
have not seemed necessary. Among the fifty imsects of 
various orders now described, only one new generic name 
(for a moth) has been required. Thus it appears that the 
insect-fauna of the Isle of Wight in Oligocene times was 
very like that now inhabiting the earth, and in large part 
similar to that now found in the same locality. The genera 
of Diptera, in particular, are millions of years old, aud there 
has been no general evolutionary movement transgressing 
Ann. & Mag. N. Hist. Ser. 9. Vol. vii. dl 
