322 COLEOPTERA OF NORTH AMERICA. 



Tribe XIII. ATimiM. 



One genus with two species constitutes this group, which has 

 lost entirely the characteristic form of the Cerambycidfe, and 

 resembles a rather stout Lamiide. The head is broad and short, 

 the front perpendicular ; the eyes large, deeply emarginate, almost 

 in fact divided, and not very finely granulated; labrum transverse, 

 ciliated with very long hairs ; mandibles slender and acute ; 

 mentum trapezoidal, corneous ; palpi unequal, scarcely compressed, 

 truncate at tip, the maxillary about half longer than the labial. 

 Antennas slender, shorter than the body in both sexes, 11-jointed; 

 2d joint less than half as long as the 3d, which is a little shorter 

 than the 4th, punctured and pubescent, not sericeous. Front 

 coxae rounded, somewhat large, widely separated by the pros- 

 ternum, cavities not angulated externally, completely closed 

 behind ; middle coxae widely separated by the mesosternum, 

 which is truncate behind and gradually declivous in front; coxal 

 cavities slightly angulated externally, completely closed by the 

 sterna; metathoracic episterna moderate, neither wide nor nar- 

 row ; metasternum unusually deeply emarginate behind, for the 

 reception of the acute intercoxal process ; ventral segments 

 slightly decreasing in length, the 5th in 9 a little longer than the 

 4th and truncate. Legs short, thighs moderately clavate, tibiae 

 with small spurs, hind tarsi with 1st joint equal to two following 

 united. 



The scutellum is subquadrate, rounded behind; the mesonotum 

 has a large stridulating surface, divided by a dorsal furrow, as in 

 Leptura and allied genera. 



The body is densely clothed with long, coarse, luteous hair, 

 with some denuded spots on the thorax and elytra; the former 

 is quadrate, transverse, scarcely rounded on the sides, and 

 coarsely punctured, the latter a little broader, truncate at tip, 

 more finely and -very sparsely punctured, with several rows of 

 very distant larger punctures. The front tibiae are without any 

 vestige of the oblique groove seen in Lamiae. 



Atimia confusa (Clytus conf. Say) occurs in the Middle States 

 and Canada ; and A.jlorsalis Lee, on the Pacific slope. 



