152 ME. F. "W. EDWAEDS OX OLIGOCE!S T E [vol. lxxix,. 



palpi = 0*5 mm. ; wing, from base of fork of Gu to wing-tip, 

 1*8 mm. The joints of the palpi are obscure, and the relative 

 lengths of the segments cannot be made out satisfactorily. In 

 the wings the positions of the cross-veins and of the tip of 8c are- 

 difficult to make out; Sc appears to end almost immediately 

 above the base of Us, and the cross-veins are perhaps separated by 

 about twice the length of the posterior (in one wing they cannot 

 be made out at all). The fork-cells are long, their bases almost 

 level, the upper one apparently about 25 times as long as its stalk. 

 On many of the veins scattered scales remain, and these are nearly 

 all rather broad, very distinctly broader than those of any other 

 specimen examined. Some of those on the fork-cells, however, 

 are narrower than the others. No definite characters can be seen 

 in the thorax or abdomen. 



This specimen is provisionally referred to the genus Tcenio- 

 rhynchus on account of the broad wing-scales, but it should be 

 remembered that among recent species those belonging to various- 

 genera (for instance, Aedes or Gulex) may develop broad scales on 

 the wings. The true location of this fossil species is, therefore, not 

 satisfactorily determined. It would probably be too much to hope 

 that the minute adult characters (other than those of the wing- 

 scales) on which the definition of the genus Tceniorliynchus is 

 based should be preserved in any fossil. The specimen under 

 notice, however, is interesting as showing that Tceniorliynclms 

 may have existed side by side with Culex and Aedes (and perhaps; 

 other Culicine genera) so far back as the Oligocene Period. 



Culicid Pupa. 



On one slab of rock (I. 20561). besides several specimens of 

 Aedes protolepis and a number of other insects, there is a specimen 

 of a mosquito pupa — possibly, from its rather large size, Gulex- 

 protorliimis. The thoracic respiratory organs are not preserved, 

 nor can the form of the paddles be made out. 



No trace of a larva was met with in the Isle of Wight material. 

 Several specimens were labelled ' gnat larva ' by the collectors ; 

 but these all jjroved on examination to be abdomens of mosquitoes, 

 or other insects. 



Miocene Species. 



No Culicidse have been recorded, but the British Museum 

 possesses a male Ghaoborus (GoretJira) in Burmese amber. In 

 size and appearance it differs little from the small species at 

 present existing in India. The tips of the abdomen, wings, and 

 legs are missing, and the specimen is therefore hardly fit to- 

 describe. 



Palceolycus problematicus Etheridge & OllifL 1 Fox & Par- 

 tridge's Claim, Bed Hill, near Emmaville, New England (New 



1 Mem. Geol. Surv. N.S.W. vol. vii (1890) p. 11 & pi. i, figs. 10-14. 



