90 



A. INGE AM AND J. W. SCOTT MACFIE. 



there are only a few minute hairs. On the 2nd to 7th segments there are on each side 

 two long powerful setae on the posterior margin a little internal to the angle, and a 

 small stout seta internal to them ; these setae are more highly developed on the 

 anterior segments, and on the 7th segment may be poorly represented. The dendritic 

 setae on the 1st segment are small and sparsely branched. The trumpets are long 

 and pale for the apical third, but the actual end is somewhat darkened. 



Genus Uranotaenia, Arrib. 



The only species of this genus that we have examined is U. balfouri. The paddles 

 are peculiar in shape, as described by Wesche, that is the plates on the inner sides of 

 the midribs are larger than those on the outer sides, an arrangement we have not 

 observed in any other pupae. 



The paddles of U. balfouri appear to be more pointed at the apex than those of 

 U. ornata, which has been figured by Bacot, and the pupa differs also in having a fan- 

 shaped tuft of simple hairs near to, but not actually at the posterior angle of the 7th 

 abdominal segment, and the small tufts at the posterior angles of the 8th segment 

 composed of only two hairs. In the specimen of U. balfouri examined by us there 

 was also a dark ring at the base of the paddles. 



Sub-family CHAOBOKINAE. 

 Genus Chaoborus, Lichtenstein. 



Chaoborus ceratopogones, Theo. (figs. 16, 17). 



The pupa is less curved than the pupae of the Culicinae. It has very large paddles 

 of a peculiar shape ; these paddles have a well developed buttress on their inner side 

 and their internal margins are fringed, the midrib is broad and lies nearer the inner 



Fig 16. Chaoborus ceratopogones, Theo. 



Fig. 17. Pupal trumpet of 

 Chaoborus ceratopogones, X 75. 



than the outer side of the paddle, the inner lobe being thus narrower than the outer. 

 There is a single slender terminal hair at some distance to the outer side of the end of 

 the midrib. The pupa seems to be devoid of stout hairs, but there are delicate tufts 

 near the posterior angles of all the segments and along the posterior margins. These 

 tufts might easily be overlooked. The trumpets bear but a slight resemblance to the 

 trumpets of the Culicinae ; they are flask- shaped or pear-shaped, with the narrow 

 end outwardly directed ; their surface is beautifully reticulated, suggesting an 



