1910.] 81 



is recognisable, though the pale suture is not sufficiently emphasized in 

 my copy. This species is associated with Trifolium yratense, on which 

 plant I occasionally find it at Colesborne. In his treatment of T.jtmceus, 

 Reiche, and T. tomentosus, Herbst, Fowler has evidently been misled 

 through placing imdue reliance on insects named by Dr. Power. It 

 has been my privilege to see specimens representing the ideas of the 

 former with regard to these two species, and if it be borne in mind that 

 tomentosus, Fow\er,^meliloti, Steph., and jiVftcett.s, Fowler, = tomentosus, 

 Herbst (Fowler's description oi junceus, t. c, p. 300, notwithstanding), 

 it becomes easy to understand the statement that tomentosus, Herbst, is 

 "very like" junceus, Eeiche. The European Catalogue, 1906, has 

 canescens. Marsh., as a synonym of junceus, Reiche ; but Marsham's 

 description, which is that of an insect with three pale stripes on the 

 thorax and a black suture, does not support any such conclusion. 

 Possibly this error was derived from Water ho vise's Catalogue which 

 has " canescens. Marsh. ? " as a synonym of jimceus. 



The characters employed in the following Table are those which I 



have found most useful in distinguishing our species of this interesting, 



if somewhat troublesome, genus : — 



1. (2). Elytra with the suture and two large spots on each, one at the 



shoulder and one behind the middle, covered with white 



scales quinquepunctatus, L. 



Elytra without a white humeral spot. 



Elytra Avith some of the interstices, other than the first, paler than 



the rest. 

 Sides of thorax with a pale stripe. 



Greatest width of the thorax rather more than half that of the 

 elytra venustus, F. 



Greatest width of the thorax siib-equal to that of the elytra... 



schneidcri, Herbst. 



Sides of thorax without a jDale stripe. 



Upper-side brownish-grey, the paler colour of the alternate inter- 

 stices, especially the 5th and 7 th, very conspicuous ; sutural 

 stripe yellowish-white by reason that the oblong pure white 

 scales are confined to the inner half of the first interstice, the 

 outer half being covered with yellowish linear ones similar to 

 those on the other interstices ; base of elytra distinctly wider 



than base of thorax, shoulders somewhat rectangular... 



'polylineatus, Germ. 



y (8). Upper-side blue-grey (plvmibeous), the paler colou.r of the alternate 



interstices inconspicuous; s\itiu-al stripe very white by reason 



that the oblong pure white scales occupy the whole width of 



the first interstice ; base of elytra but little wider than base of 



thorax, shoulders rounded off Uneatulus, Steph. 



10. (3). Elytra sometimes with the siitm-e whitish, but without any other 



pale stripe. 



