CERAMBYCID^E 343 



coxae separated by a fifth to third of their width ; last dorsal ( 9 ) 

 projecting, narrowly parabolic in outline; male with the fifth ven- 

 tral as long as the fourth, sharply and distinctly sinuate at tip. 

 Length (cf 9 ) 5.7-7.7 mm.; width 1.25-2.00 mm. Arizona (locality 

 unrecorded) brevisetosus n. sp. 



Elytral apices narrowly and obliquely truncate but with the outer angle 

 very obtuse and blunt; body very small in size, the integuments 

 piceo-rufous; prothorax shorter, wider than long, subparallel, the 

 punctures becoming gradually sparse anteriorly; elytral punctures 

 strong, rather dense, closer than in the preceding, the setae similarly 

 short; last dorsal segment (9) scarcely at all projecting, obtusely 

 rounded. Length (9) 5-7 mm.; width 1.4 mm. Arizona (locality 

 unrecorded) discolor n. sp. 



8 Body small, rather slender in the male, the female stouter and ap- 

 parently much less abundant; integuments black, the humeri black 

 beneath; prothorax distinctly shorter than wide; elytra rounding at 

 apex and feebly subtruncate to the obtusely blunt sutural angles; 

 female with the last dorsal segment barely exposed, parabolic, the 

 apex narrowly rounded, the fifth ventral one-half longer than the 

 fourth, rounded at tip; male with the fifth ventral not longer than 

 the fourth, broadly sinuate at apex; elytral punctures very close- 

 set, the setae numerous and well developed. Length (cf 9 ) 6.7-7.6 

 mm.; width 1.8-2.0 mm. Mexico (Tepehuanes and Durango City, 

 State of Durango), Wickham *aridus n. sp. 



The species described by LeConte under the name texanus is 

 valid, I think without much question, if founded upon a normal 

 specimen, and is so regarded by Bates; the thoracic spines do not 

 diverge obliquely, as in the species above described, but are more 

 parallel with the lateral outline of the prothorax; possibly this may 

 be an individual deformity, but it is impossible to decide at present. 

 This genus is well represented in Mexico and is divided by Bates into 

 two sections, Dectes Lee., having the scape of the antennae not or 

 scarcely flattened beneath and the body densely clothed, and 

 Canidia Thorns., having, the body sparsely clothed to almost nude 

 and the scape broadly flattened or even grooved beneath. 



Colobothea Bates. 



In this genus, which is also rather anomalous in form among the 

 other Lepturgids, the sexual characters at the abdominal apex in 

 both male and female become very conspicuous and diversified to 

 such a degree, in forms that otherwise greatly resemble each other, 

 that they serve as the best means of recognizing the rather numerous 

 species. The two following species do not seem to have been in- 

 cluded in the material studied by Mr. Bates: 



