1022 



FAMILY LII. CERAMBYCIDyE. 



oblong black points, length 16 mm., ranges from the Middle States 

 to Mexico. 



Gracilia minuta Fab., piceous, length 6 mm., is an introduced 

 European species which occurs in the Atlantic States. 



Stromatiam pubescens Hald., pale yellowish-brown, length 14.5 

 mm., is known from Pennsylvania. 



XII. Chion Newm. 1841. (Gr, "snow.") 

 To this genus belongs the single species : 



1800 (603S). Chion cikctus Drury, 111. Nat. 

 Hist., II, 1773, 85. 

 Elongate, slender, subcylindrical. Brownish, 

 sparsely clothed with fine grayish pubescence ; 

 elytra usually with an oblique yellow blotch in 

 front of middle. Antenna 1 of male much longer 

 than in female, about the length of body. Tho- 

 rax cylindrical with a short, sharp spine each 

 side. Elytra finely and rather densely punctate, 

 each with two short spines at apex. Length 16- 

 32 mm. (Fig. 433.) 



Throughout the State; scarce. April 

 25-June 18. Occurs beneath bark, most 

 commonly that of hickory, in the wood of 

 which the larvfe dwell ; also taken at light. 

 The form with yellow spot on elytra, which 

 is of most frequent occurrence in the State, 

 is the one usually listed as var. gar g amicus Fab. 



Fig. 433. Natural size. 

 (After Forbes. ) 



XIII. Eburia Serv. 1834. (Gr, "ivory.") 



The members of this genus are readily distinguished by the 

 two pairs of ivory-white spots on each elytron. But one of the 

 eleven known North American species occurs in the State. 



1S91 (6042). Eburia quadrigeminata Say, Journ. Phil. 



Acad. Nat. Sci., V, 1826, 275 ; ibid. II, 333. 

 Elongate, slender, subcylindrical. Pale brownish-yel- 

 low ; elytra each with two nearly equal oblong whitish spots 

 at base, and a second pair just behind the middle, the outer 

 one of which is nearly double the size of the inner. Thorax 

 cylindrical, with two minute blackish tubercles on disk and 

 a short, sharp spine each side. Elytra parallel, surface fine- 

 ly and rather densely punctured ; tips each with two spines, 

 the outer one of which is the longer. Middle and hind fe- 

 mora each with two spines at apex. Length 14-24 mm. 

 (Fig. 434.) 



Throughout the State ; scarce. July 2- August 31. 

 Breeds in hickory, ash and honey locust. 



Fig. 434. Eburia 

 q uadrigeminata. IS xi- 

 ural size. 



