140 MR. F. W. EDWARDS ON OLIGOCENE [yoI. IxXIX, 



Corethrium pertinax Westwood. 1 Lower Purbeck, Swanage 

 (Dorset). The name implies that Westwood considered the 

 specimen to be allied to Coretlira, but it is almost certainly a 

 species of Tipula. Only a portion of a wing is preserved. 



Culex fossilis Brodie. 3 Purbeck, Vale of Warclour (Wiltshire). 

 The type is in the British Museum ; the preservation is not very 

 good, and the characters are difficult to make out. A plumose 

 male antenna is visible ; one leg shows a small simple claw on two 

 detached tarsal segments ; the palpi are apparently short and 

 curved. The wings are not preserved. This is most probably a 

 Chironomid : the genus Dara has been founded for it by C. G. A. 

 Giebel.3 



Rliyplius priscus Brodie. 4 Purbeck, Vale of Wardour (Wiltshire). 

 This is most probably not a Mhyphus, since the legs, so far as 

 they can be made out, seem too long and slender. The general 

 appearance of the specimen does not exclude the possibility tbat it 

 may be a Culicid ; there are obscure structures in front of the 

 thorax in the type, which may possibly be the mouth-parts and 

 antennae of a mosquito, but they may also be portions of a dis- 

 placed wing. Giebel has proposed the generic name Bria for this 

 fossil, but there is nothing in the type by which it can be definitely 

 assigned even to its correct family. 



Eocene Species (North American). 



Culex proavitus Scudder. 5 Fossil Canon, White River (Utah), 

 U.S.A. One badly preserved and poorly figured specimen. From 

 the evidence presented by Scudder in his description and figure, 

 this would not appear to belong to the Culicidse at all. It may 

 be a Phlebotomus or some other small Psj^chodid. 



Culex clavinatorum Scudder. 6 Green River (Wyoming), U.S.A. 

 Three female specimens with short palpi (figured as a little over a 

 quarter as long as the proboscis). Proboscis rather short, equalling 

 the front femora in length ; orbital bristles remarkably well 

 preserved ; first hind tarsal segment shorter than the tibia ; tip of 

 abdomen apparently damaged ; wing-venation not preserved. 

 Evidently a Culicine mosquito ; perhaps a true Culex, but it 

 cannot be definitely assigned to that genus on the information 

 available. Probably a re-examination of the specimens would 

 reveal other characters not mentioned by Scudder (for example, 

 the condition of the claws might be ascertainable). 



Culex winchesteri Cockerell. 7 Green River horizon, Cathedral 

 Bluffs (Western Colorado), U.S.A.. The proboscis is apparently 



1 Q. J. G. S. vol. x (1854) p. 387 & pi. xv, fig. 2. 



2 ' Fossil Insects ' 1845, p. 34 & pi. iii, fig xv. 



3 ' Fauna der Vorwelt ' 1856, p. 254. 



* ' Fossil Insects ' 1845, pi. iv, fig. 10. 



5 ' Tertiary Insects ' 1890, p. 582 & pi. v, figs. 8-9. 



6 Ibid. p. 582 & pi. x, fig. 14. 



7 'Nature' vol. ciii, p. 44 (March 1919); Proc. U.S. Nat. Mus. vol. lvii 

 (1920) p. 248 & pi. xxxv, fig. 2. 



