44 GEO. H. HORN, M. D. 



Clypeus denticulate or angulate each side of middle 2. 



Clypeus broadly emarginate at middle, very obtusely rouuded each side 4. 



Clypeus almost exactly semicircular 7. 



2.— Clypeus with a small acute tooth each side of the extremely feeble emargi- 

 nation ; above the middle of the margin of the clyiH'Us a finely ele- 

 vated angulate line flentiger. 



Clypeus broadly emarginate at middle, distinctly angulate each side 3. 



3. — Elytra entirely piceous. 



Body beneath and legs piceous coloradeiisis. 



Body beneath and legs pale yellow ; elytra often with the alternate inter- 

 vals having small red spots bicoloi*. 



Elytra dull red, intervals strongly convex at apex, the ninth elevated in its 



entire length Iiixatus. 



Elytra yellow, maculate with black ; sides of thorax somewhat paler. 



serval. 

 4. — Thorax with the front angles always paler, often the entire side and a portion 



of the head also 5. 



Thorax entire black as well as the head 6. 



5. — Basal marginal line of thorax distinct. 



First joint of posterior tarsus longer than the next two. 



Head entirely black ; thorax very little paler at the sides ; elytral spots 



tending to form stripes iiiquiiiatu!^. 



Head and thorax always paler at the sides. 

 The inner striae of elytra joining the outer at apex; ground color of 

 elytra pale yellow as in inquinatus ; punctuation of thorax rather 



sparse and irregular partialis. 



The inner three striae entire not confluent with the outer strise ; ground 

 color of elytra reddish yellow ; punctuation of thorax moderately 



close leopard ii!>i. 



First joint of posterior tarsus very little longer than the second ; thorax 

 with extremely few punctures ; elytra dull red ; species small. 



iuutilis. 

 Basal marginal line of thorax entirely wanting, the punctures of disc mod- 

 erately coarse and evenly disposed ; elytra pale reddish yellow, the 

 sutural interval and an oblique band on each side piceous ; species 



small, 3 mm puinilus. 



6. — Elytra black, apex dull red, intervals flat ; punctures of thorax equal, rather 



sparse temiinaliiS. 



Elytra dull red, varying to nearly black, in the latter case the apex is not 

 paler; intervals convex; punctures of thorax intermixed. 



cruontatiis. 

 7. — Subdepressed ; thorax without basal marginal line, the punctures of the disc 



moderately close and somewhat unequal depressiis. 



Moderately convex; thorax without basal marginal line, the disc almost 

 entirely smooth, the lateral margin conspicuously thickened. 



rtifipes. 



Three of the species of this grou]) are quite common in Europe, — 

 rufipes, depressiis and inquinatus. It is not yet certain tliat the first 

 two are fairly established, hut tlie latter is here to stay. 



