CERAMBYCID.E 287 



smaller in the female type, in part due to sex; legs rufo-piceous. 

 Length (9 ) 21.5 mm.; width 8.0 mm. New Mexico. 



grylliceps n. subsp. 



Form more elongate and less ventricose, highly polished, the legs black 

 and concolorous; antennae similarly slender and apparently not at 

 all annulate; prothorax distinctly shorter and rather strongly trans- 

 verse, not swollen on the flanks subapically, the spine still smaller, 

 more obtuse and more tuberculiform; sculpture nearly similar, 

 except that the minute punctulation is much less close and the coarse 

 punctures extend less far from the apical and basal margins; flanks 

 coarsely punctured in apical half and near the base; scutellum broadly 

 rounded, sparsely micro-punctulate; elytra narrower, more oblong, 

 with feebly arcuate sides, feebly narrowing posteriorly to the rela- 

 tively broader apex, about twice as long as wide, a fourth wider 

 than the prothorax, very convex, the line of flexure notably obtuse; 

 punctures very coarse, deep, numerous, extending nearly to apical 

 third, not differing on the flanks, except that they become still 

 coarser basally though simple, with the surface more irregular and 

 extend, near the sides, almost to the elytral tips, the surface above 

 smooth, without elongate impressions; under surface and legs nearly 

 similar; female in every way as in the male but with the anterior 

 parts less developed, the sides of the elytra more arcuate and, as 

 usual, with the femora much less inflated. Length (cf 9 ) i9-5~ 

 20.5 mm.; width 7.2-7.8 mm. Colorado rector n. sp. 



8 Antennae smooth, never more than sparsely punctate, rather slender; 

 upper surface of the body in great part smooth 9 



Antennae coarsely and rugosely punctured, very stout, not annulate; 

 body more or less rugose and punctured throughout 12 



9 Thoracic tubercles situated at basal third, erect and very distinct 

 though obtuse at tip. Body broadly oblong-oval, convex, rather 

 shining, deep black and glabrous; head sparsely punctate almost 

 throughout; antennae gradually tapering, not annulate, the fourth 

 joint with merely a small white patch beneath at base in the type; 

 prothorax strongly transverse, three-fourths as wide as the elytra, 

 the sides slightly converging basally and apically from the tubercle; 

 surface with scattered larger and smaller punctures and a rather 

 even single line of coarse punctures near the base; scutellum very 

 short and extremely transverse, puberulent, without broad median 

 parting; elytra oblong-oval, nearly straight and parallel basally, 

 rounding and rapidly narrowing posteriorly to the broadly obtuse 

 apex, the line of flexure basally very obtuse, coarsely punctate; 

 surface with feeble confused vermiculiform sculpture, the micro- 

 granulation dense and strong; punctures coarse, deep, wanting near 

 the median line of each elytron nearly to the base, extending suturally 

 and laterally nearly to the middle, very coarse and extremely deep, 

 rather close and very conspicuous on the flanks; legs shorter than 

 usual, the femora rugulose and evidently though not densely punc- 

 tate. Length (9) 23.0 mm.; width 9.6 mm. Mexico (Durango 

 City), YVickham *pleuralis n. sp. 



Thoracic tubercles behind the middle as usual but before basal third . . 10 



