390 Mr. C. G. Lamb on Exotic Chloropidse. 



Gampsogera, Schin. 



Gampsocera mutata, var. grandis, nov. 



The agreement between these specimens and Beoker's 

 description (III. p. 134) and figure of this Formosan species 

 is almost exact in all structural details ; they differ in being 

 larger (2i mm. as against 1£ to 2 mm.) and in the fact that 



Fiff.21. 



r. ,..',. mutate/, var. grandis, x 22. 



the parts coloured palely are not "red-yellow" but more 

 ordinary pale yellow ; the venation is also apparently a little 

 aberrant in the costal divisions (see fig. 21). 

 CEYLON : Peradeniya (A. Rutherford). 



CESTOrLECTUS *, gen. nov. 



Four specimens occur which cannot find place in any of 

 the present genera. 



Generic diagnosis. — Head as in figs. 22, 23, & 24, very 

 compressed axially, so that the horizontal breadth is about 

 three times the vertico-frontal distance and the depth in side- 

 view is nearly twice the axial breadth ; facial angle between 

 frontal and facial planes about 120°. Antenna (tig. 25) with 

 large reniform third joint and dorsal pubescent arista ; the 

 antennas are pressed sideways against the face. There is no 

 vertical triangle and no f.-o. bristles ; the head-bristles are 

 outer verticals, post-verticals, and small ocellar. The eyes 

 are very densely pubescent, almost hairy. 



The thorax is devoid of d.-c, and. has one supra-alar and 

 two bristles on the notopleura just before wing-base, placed 



* So named from the face being flattened, as if by a Mom-. 



