NEW BARK BEETLES — BLACKMAN 353 



moderate size, in regular strial rows, only first stria impressed on 

 disk and sides; interspaces narrow, rugulose, with sparse, fine punc- 

 tures on disk ; vestiture of very fine, very short hairs from strial punc- 

 tures and a few short, moderately fine, erect, spatulate setae from 

 interspaces. Declivity convex ; striae impressed, punctures finer than 

 on disk, each with small, inconspicuous hair ; interspaces slightly con- 

 vex, bearing short, erect, broadly spatulate, scalelike hairs, much more 

 numerous and more conspicuous than on disk. 



The male is unknown. 



Type locality. — Brownsville, Tex. 



Host. — Unknown. 



Type material. — Holotype and one paratype, U.S.N.M. No. 56404. 



THYSANOES VACHELLIAE, new species 



Plate 30, Figures 11, 12 



Female. — Light reddish brown, with anterior pronotum and elytral 

 declivity distinctly darker; holotype 1.41 mm. long, 2.69 times as long 

 as wide. 



Frons concave from eye to eye, moderately sharply margined at 

 sides, surface brightly shining, reticulate, very finely punctured, with 

 very fine, short, inconspicuous hairs. Eye very large, broad-oval, 

 facets coarse, inner margin entire. Antenna (pi. 30, fig. 11) with club 

 slightly shorter than funicle, scape longer than either ; club 1.36 times 

 as long as wide, with distinct, arcuate, setose sutures. 



Pronotum 1.02 times as long as wide, widest near middle, posterior 

 outline feebly arcuate, posterior angles scarcely rounded; sides arcuate 

 from base to distinct constriction anterior to middle, very broadly 

 rounded in front, with anterior margin not serrate; anterior area 

 with sparse, rather low, small asperities and short, stout, spatulate bris- 

 tles ; summit moderate, in front of middle ; posterior area horizontal, its 

 surface subopaque, finely, distinctly reticulate, punctures sparse, fine 

 and very shallow, with shorter, smaller, more slender bristles than 

 on anterior area. 



Elytra equal in width to pronotum and 1.69 times as long, 1.78 times 

 as long as wide; sides subparallel on more than basal two-thirds, 

 broadly rounded behind ; strial punctures in nearly regular rows, deep, 

 close, moderately coarse, first stria weakly impressed, others not im- 

 pressed ; interspaces narrow, rugulose, punctures small, bearing short, 

 stout bristles, longer and more spatulate posteriorly. Declivity 

 steeply arched, convex; striae impressed, punctures smaller than on 

 disk; interspaces somewhat convex, with punctures bearing moder- 

 ately short, erect, spatulate bristles, more numerous, longer, and more 

 conspicuous than on disk. 



