1 82 MEMOIRS ON THE COLEOPTERA 



densely clothed with inclined stiff hairs. Length (d\ 9 ) 15.0-16.0 

 mm.; width 7.7-8.0 mm. Texas. [Asida horrida Champ.]. 



horrida Champ. 



The specimens described by Champion came from Nuevo Laredo, 

 just across the Rio Grande from Laredo, Texas, and I have but 

 little doubt that these Texan examples represent the same species, 

 although there seem to be a few discordances and I do not know 

 that they were taken anywhere near Laredo. The erect hairs of 

 the elytra, for example, are said to be long in the Mexican types, 

 while in those above described they are very short, no longer in 

 fact than the curly decumbent hairs; the figure given on the plate 

 is slightly too slender for the Texan form. 



The following species is appended to Trichiasida with many 

 doubts. The arrangement of the elytral costse is exactly that 

 characterizing this genus, but the sinuation of the sides of the 

 prothorax toward base is a character quite at variance with any- 

 thing hitherto observed, and the author makes no reference to 

 pubescence of any kind, this being present, at least in some form, 

 in all the other species: 



Form elongate-oval, black, opaque; head coarsely and sparsely punctate; 

 prothorax subquadrate, moderately convex, coarsely, sparsely and un- 

 evenly punctured, the sides [narrowly reflexed], moderately rounded, 

 feebly sinuate posteriorly, the apex sinuate, with the angles not 

 prominent; base truncate, the angles right; elytra elongate-oval, 

 convex, with a distinct marginal costa; base truncate, the angles 

 distinct, each having three nearly straight, parallel, moderately 

 elevated costae, the surface between the suture and first costa shining, 

 the remainder opaque; costae extending to apical fourth, the third 

 joining the marginal ridge at basal fifth; under surface opaque, 

 coarsely and sparsely punctured. Length 22.5 mm. Western 

 Nevada. [Asida semilcevis Horn] semilsevis Horn 



This species is apparently still represented by the unique type, 

 collected by Mr. W. M. Gabb. 



Platasida n. gen. 



The type of this genus is a very peculiar and isolated species, 

 recently described from Lower California. The very widely re- 

 flexed or flattened margins of the prothorax are remindful of one 

 of the more conspicuous characters in the Blaptid genus Embaphion. 



