AMERICAN COLEOPTERA. 151 



and uniform in width. Head finely striate between and in front 

 of tlie eyes, not hairy ; labruni obsoletely three-toothed ; thorax 

 slightly convex, nearly quadrate, impressions deep, surface granu- 

 late, slightly hairy at sides; elytra punctate granulate, not serru- 

 late at tip. Beneath, the palpi, flanks of thorax, coxse, pleurae 

 and legs are thinly clothed with white hair, the sides of abdomeu 

 almost glabrous. 



This species has been separated and nameless in collections for a 

 long time. Major Casey has unfortunately compared it with senilis 

 which it does not resemble, and he possibly had the Inyo County 

 specimens of pseudosenilis in mind which have been called senilis 

 in error. 



C. hirtioollis Say, 1818, Trans. Am. Phil. Soc, new ser., i, 411, pi. 13, fig. 2; 

 albohirta Dej., Spec, ii, 425; Spec, v. 215; unita KoUar, Ann. Wieu. 

 Mus., i, 330; Scliaupp. I.e., p. 96, pi. 3, fig. 66; pi. 6, fig. 137. 

 Length 13-14 nim.=.52-.56 inch. 



Habitat. — Atlantic seacoast, Gulf of Mexico coast, shores of the 

 Great Lakes, banks of rivers in central and western States. 



Bronze-brown, sometimes with green tinge; beneath green, very 

 hairy ; elytral markings consist of humeral lunule, middle band and 

 apical lunule often all connected by the marginal line, though there 

 is usually a break in front of the apical lunule. The humeral lunule 

 is always bent upward at its posterior extremity, and by this char 

 acter alone hirticollis may be separated. Head striate between the 

 eyes, granulate and hairy in front; labrum one-toothed; thorax 

 quadrate, flat, impressions deep, green at base, hairy at the sides, 

 granulate ; elytra suddenly dilated before the middle in both sexes, 

 but wider in the female, granulate punctate, serrulate at apex. Be- 

 neath very hairy, the palpi, flanks of thorax, coxae, pleurae and legs 

 thickly clothed with white hair, and the sides of the abdomen evi- 

 dently clothed. 



Var. gravida Lee, 1849, Ann. Lye, v, 170; Chaud. Bull. Mosc, 1854, i, 113. 



Habitat. — Seacoast of California, San Diego. 



This is the form of hirticollis which inhabits the Pacific seacoast, 

 and differs in being much more green than our eastern form. Dr. 

 LeConte in 1856 considered it as identical with hirticollis, but the 

 original types were preserved in his collection, and it is undoubtedly 

 a geographical race. 



TKANS. AM. ENT. SOC, XXVIII. MAY, 1902. 



