KAKOTHRIPS, N. GEN. 



247 



great plenty if the sun shone, and on a calm day it was quite 

 possible to get five or six in the net at once. C. pinetelliis and 

 C. inquinateUus also sheltered in the fir trees, whilst a few 

 S. coniferana and E. atricapitana were to be had, the latter 

 having evidently flown up from the ragwort beneath. Altogether 

 we brought back some six or seven hundred good insects apiece, 

 which was excellent work for three weeks of thoroughly bad 

 weather. 



KAKOTHRIPS, n. gen., A DIVISION OF THE GENUS 

 FRANKLIN lELL A (THYSANOPTEEA). 



By C. B. Williams, B.A., F.E.S. 



During the past two years I have been investigating the 

 life-history of a species of thysanoptera which does considerable 

 damage to peas and beans in this country, with a view to finding 



some method of control ; and a full account will be published 

 shortly (Annals of Applied Biology). The species has been known 

 up to the present by many different names : — Thrips pisivora, 

 Physopus rohusta, Euthrips robusta, and Frankliniella robusta, 

 the latter being at present the most correct terminology. The 

 species has never been properly described, Uzel's original 

 description (*' Physopus robusta," Monographie der Ordnung 

 Thysanoptera, 1895, p. 104) being insufficient for modern 

 demands. In making a careful examination of a number of 

 specimens for a proper technical description (which will appear 

 in the above-mentioned paper) I found that this species differs 

 in several respects from all other known species of the genus 

 Frankliniella. Uzel {I. c.) had already noted that the male of 

 this species has a pair of processes on the abdomen, one on 



