170 MEMOIRS ON THE COLEOPTERA 



tarsi rather short and with still shorter, stiffer hairs beneath. The 

 anterior tibise are as in the Pelecyphorus type, cylindric and scarcely 

 at all everted or acute externally at apex in some, to decidedly spini- 

 form in others, this feature being as inconstant as in that genus. In 

 Euschides there is much greater uniformity in this respect, the outer 

 angle being invariably much everted and very acute. The species 

 of Asidina are few in number, those so far discovered being very 

 readily distinguishable as follows: 



Elytra with the discal costa abbreviated at both ends and parallel to the 

 side margin, the latter not bifurcate behind 2 



Elytra with the discal costa attaining the base, the marginal carina bi- 

 furcate posteriorly 3 



Elytra without a free discal costa, the latter uniting with the marginal 

 carina anteriorly, the marginal carina not bifurcate posteriorly. . .4 



2 Body black, opaque, finely, muricately punctate and hispid; prothorax 

 quadrate, the margins reflexed, the apical angles very acute; elytra 

 nearly flat above, scarcely wider than the prothorax, subparallel, 

 the apex strongly declivous, having near the margin an acute costa 

 which is abbreviated at both ends and parallel with the acute marginal 

 carina. Length 15.0 mm. California (in the mountains of the 

 western part of the Colorado Desert). [Pelecyphorus parallelus 

 Lee.] parallela Lee. 



Body very narrow, parallel, pale piceous-brown in color, the integuments 

 throughout very highly polished; head very feebly impressed, opac- 

 ulate, strongly, closely punctate and hispid with short stiff pale 

 hairs, the sides before the eyes very prominent but obtuse, the an- 

 tennae very slender as in most European Asida; prothorax about a 

 third wider than long, subparallel, the sides evenly and moderately 

 arcuate throughout, the apex narrower than the base and deeply, 

 evenly sinuate, with the angles only moderately produced, acute and 

 with the apex slightly blunt; base transverse, very feebly and broadly 

 bisinuate, the angles obtuse but distinct; surface very evenly and 

 moderately convex, polished, extremely minutely, sparsely punctu- 

 late and hispid with very short hairs, the sides very abruptly and 

 strongly reflexed, almost vertical, thin and coarsely, densely, ru- 

 gosely punctured; base declivo-impressed along the median lobe; 

 scutellum small, equilatero-triangular, opaque; elytra equal in 

 width to the prothorax, fully three-fourths longer than wide, gradu- 

 ally declivous and obtuse behind, the apical lobe from above small 

 but distinct, the sides parallel and feebly arcuate; basal angles 

 obtuse but distinct; side margins strongly cariniform, still more 

 elevated basally, rounding in rapidly behind nearly to the apex, 

 the discal carina strong, extending from basal fourth nearly to apical 

 sixth, becoming but little more distant from the margin posteriorly; 

 surface strongly shining, flat, sparsely and very minutely punctulate 

 and hispid with short pale yellowish setae; abdomen finely, closely, 

 asperulately punctate and with close and longer, finer pale hairs, 



