CERAMBYCID.E 3 1 7 



Lepturges Bates. 



In North America and the neotropics, to which regions it is con- 

 fined, this genus is a very large one and naturally includes at present 

 some discordant elements, as shown principally by the form of 

 the body, nature of the thoracic spines, which however are always 

 small acute and more or less near the base, and the form of the 

 femora. In the more typical species of the genus, the hind femora, 

 at least, are never abruptly or strongly clavate in either sex. Our 

 species, as in the case of Leiopus and Hyperplatys, are somewhat 

 more numerous and structurally diversified than hitherto supposed ; 

 those represented in my cabinet may be known as follows: 



Body more elongate and of larger size, the hind femora lineiform in both 

 sexes 2 



Body shorter, small in size, the hind femora clavate as a rule, feebly in 

 the female; antennae hair-like in tenuity 5 



2 Lateral thoracic spine basal, the hind margin subtransversely, broadly 

 and feebly sinuate from the tips of the spine to the transverse 

 median parts of the base 3 



Lateral spine more abruptly formed, less basal, denned posteriorly by a 

 less transverse and deeper sinus 4 



3 Form stout, larger than usual, obscure testaceous, very densely and 

 conspicuously clothed with fine even and pale cinereous pubescence, 

 variegated with blackish-brown spots; head feebly indented, the eyes 

 more deeply emarginate than in confluens; antennae subsimilar, very 

 pale and uniform, three-fourths longer than the body ( 9 ) ; prothorax 

 more trapezoidal, rather more than one-half wider than long, the 

 converging sides nearly straight, feebly undulate medially, rounded 

 at apex, which is much narrower than the base; surface even, except 

 a feeble transverse subbasal impressed line, ornamented with four 

 small elongate spots medially, two near the apex and two subbasal, 

 forming a parallelogram, also with a small brown point near the 

 basal angles; punctures fine and sparse; elytra slightly more than 

 twice as long as wide, more parallel, the sides rounding more abruptly, 

 though broadly, posteriorly to the apices, which are strongly and 

 evenly rounded; punctures fine and sparse, the dark maculation 

 nearly as in the following but wanting near the scutellum, the two 

 elongate coalescent spots behind the middle ashy, except about 

 their peripheries; last dorsal segment flat, tapering, with straight 

 sides and arcuato-truncate apex, projecting distinctly behind the 

 elytra, and not even with the elytral tips and narrowly rounded at 

 apex as it is in confluens. Length (9) 7-7 mm.; width 2.4 mm. 

 Texas (Austin). A single female taken by the writer many years 

 ago canus n. sp. 



Form nearly as in the preceding, but not so stout and with the minute 

 cinereous vestiture much more completely replaced by more com- 

 minuted spots of brown; head indented; antenna? much less pallid 



