TRIBE XX. CEUTORHYXCHIXI. 441 



/(. Funicle 7-jointed; form broader; thoracic tubercles acute; an- 

 tenna and tarsi piceous; last ventral of male with circular 

 impression. 687. SULCIPENNIS. 



tiJi. Funicle 6-jointed; form more elongate; tubercles of thorax ob- 

 tuse or lacking; antennas and legs rufous; last ventral of male 

 with transverse impression. 688. DECIPIENS. 



(_ _). CEUTORHYXCHUS CYAXIPENXIS Germ., 1824, 235. 



Oblong-oval, subdepressed. Black, elytra steel-blue, shining; above 

 very sparsely clothed with very fine, short pubescence, and with a small 

 scutellar spot of white scales; under surface not densely punctured, sparsely 

 scaly, side pieces of thorax more densely scaly, the disc almost naked. Beak 

 slightly longer than thorax, male; one-half longer, female, curved, slender, 

 tapering from the base, striate on basal half, punctured throughout, more 

 finely toward tip. Thorax scarcely wider than long, widest near base, 

 strongly narrowed and broadly constricted near apex, lateral tubercles 

 obtuse, prominent; dorsal sulcus deep, surface coarsely and densely punc- 

 tured. Elytra one-fourth wider at base than thorax, striae fine, shallow, 

 punctured; intervals flat, rugose. Length 2.73.2 mm. 



Starke Co., Ind., rare; May 21. Edgebrook, 111., May 6. 

 Ithaca, Johnstown, Sport Island and Portage, N. Y., May 24 

 July 5. Ranges from Canada and New England west to Idaho 

 and California, south to Maryland. A well known European 

 species which, in that country, attacks cabbage, rape, horse- 

 radish, and also wild cruciferous plants. Easily known by its blue 

 elytra and toothed claws. 



V 



In many collections, even that of LeConte at Cambridge, this 

 species bears the name C. erysimi Fab., also a greenish European 

 species but with unarmed femora, deep elytral striae and 

 under surface with bronzed lustre. 



681 ( ). CEUTORHYXCHUS BOLTERI Dietz, 1896, 432. 



Oblong-oval. Head, thorax, legs and under surface black, rather 

 thickly clothed with dirty yellowish pubescence; elytra dark steel-blue with 

 a faint scutellar spot of white scales. Thorax shorter, narrower and more 

 constricted in front, disc more finely punctured, its lateral tubercles much 

 more acute and distinct than in cyanipennis. Elytra shorter, the intervals 

 less rugose than there. Femora feebly clavate, all armed with an acute 

 tooth. Length 2.32.5 mm. 



Starke Co., Ind., rare; May 19. Millburn and Irving-ton. X. 

 J. ; May 30. Ithaca, X. Y., May 21. Also closely resembles the 

 European C. en/simi Fab., but differs by the toothed hind femora. 

 From ci/<iiii]tcii>ns, our only other species with blue elytra, it 

 may be separated by its smaller size, darker hue, more acute 

 lateral tubercles of thorax and simple claws. The type of C. 

 JiirticolUs Dietz (1896, 433) at Cambridge is only a darker col- 

 ored form of boltcri. 



