99Q [October, 



roundish spol near the apical fifth next the suture, on each, yellow... 



4-signatus, Bach. 

 (dorsalis, Auett. Angl.). 



22 (21) Elytra not as in 4-signatus. 



23 (26) Sides of thorax evidently convergent in front as well as behind. 



24 (25) Thorax at the base twice as wide as its length down the middle, much 



narrowed behind. Elytra brown-bronze, or at least with a bronze 

 reflection, the fine punctuation on the interstices in the scutellar region 



irregular or in double rows viridicoUis. Steph. 



(eeneipennis, Thorns.). 



25 (24) Thorax at the base 1\ times as wide as its length down the middle, but 



little narrowed behind. Elytra without bronze reflection, the punctures 

 in the interstices in the scutellar region in a single row... 



dorsalis, Marsh. 

 (muhanti, Rye). 

 20 (23) Sides of thorax not evidently convergent in front, contracted from the apex 

 to the base in a nearly straight line. 



27 (28) Elytral interstices usually quite flat, nearly three times as wide as the 



length of the section of stria between each puncture. The rows of 

 interstitial punctures relatively more evident than in the two following 

 species by reason of the comparatively smaller size of the punctures in 

 the stria?. Disc of thorax simply punctured affiiiis, Marsh. 



28 (27) Elytral interstices usually distinctly convex, less than twice as wide as the 



section of stria between each puncture. Punctuation of disc of thorax 

 areolate, i.e., the punctures placed singly in the meshes of an impressed 

 irregular reticulation. 



29 (30) Elytra, in the lateral aspect, resembling those of brevipalpis ; compared 



with granularis, longer in proportion to their height, the slope of their 

 apical third very gradual. Flattened part of sides of thorax broad... 



griseus, Hbst. (Ganglb.). 



30 (29) Elytra, in the lateral aspect, shorter in proportion to their height than in 



brevipalpis and griseus, the slope of their apical third distinctly more 

 abrupt. Flattened part of sides of thorax very narrow... 



granularis, L. (Ganglb.). 

 (brevicollis, Thorns.). 



31 (19) The longitudinal furrow on the head not widened in front. 



32 (33) Granulation of thorax about equally strong throughout. Elytra in the 



lateral aspect distinctly longer in proportion to their height than in 

 viridicoUis, the apical slope more gradual crenatus, Rey. 



33 (32) Granulation of thorax somewhat more feeble on the disc than at the sides. 



Elytra, in the lateral aspect, distinctly shorter in proportion to their 

 height than in viridicoUis, the apical slope more abrupt... 



strigifrons, Thorns. 



34 (20) Thorax widest in the middle. 



35 (36) Sides of thorax strongly granulate tat icollis, Thorns. 



36 (35) Thorax smooth and shining, at most feebly granulate at the sides... 



nanus, Sturm. 



