356 PROCEEDINGS OF THE NATIONAL MUSEUM vol.93 



Elytra slightly wider than pronotum and 1.54 times as long, 1.47 

 times as long as wide; sides subparallel on basal two-thirds, rather 

 narrowly rounded behind, subangulate at apex, with a broad, shallow 

 emargination at suture, as seen from behind, exposing tip of abdomen ; 

 surface moderately shining, irregularly, indistinctly reticulate; strial 

 punctures deep, close, rather coarse, in regular feebly impressed rows; 

 interspaces moderately narrow, slightly convex, rugulose, with a few 

 fine punctures; vestiture of minute, scarcely visible hairs from strial 

 punctures and short, moderately stout setae from interspaces, becom- 

 ing longer and spatulate posteriorly on disk and sides. Declivity 

 sloping, originating slightly behind middle, with no special modifica- 

 tions except that the setae of interspaces are longer, and spatulate, and 

 the strial punctures are very small and more shallow, with strial rows 

 not impressed. 



Female. — Larger and more slender, 1.43 mm. long, 2.69 times as long 

 as wide ; f rons weakly concave from eye to eye, finely, roughly punc- 

 tured ; pronotum broadly rounded in front, margin without serrations; 

 elytra with setae of interspaces short, spatulate, nearly uniform 

 throughout. 



Type locality. — Huachuca Mountains, Ariz. 



Host. — Unknown. 



Type material. — Holotype, allotype, and eight paratypes, U.S.N.M. 

 No. 56407. 



The type series was collected by H. A. Kaeber, June 25, 1907. 



STENOCLYPTUS, new genus 



Genotype. — Stenoclyptus rhois, new species, here described. 



Body form subcylindrical ; frons flattened and with conspicuous 

 vestiture; eye short oval with inner margin entire; antenna of typical 

 micracine structure, with twisted, club-shaped scape, bearing numerous 

 long hairs; funicle of six segments and club with annulated sutures 

 notched at sides and marked by lines of setae ; pronotum with summit 

 postcentral, asperities rather coarse and sparse, confined to an oval 

 area, the sides being without asperities; elytra subtruncate behind, 

 declivity bisulcate ; fore coxae separated ; fore tibia slightly widened 

 distally and with sides sinuate as in Hylocurus Eichhoff, but with long 

 terminal mucro and two or three large submarginal teeth ; tarsus with 

 third segment slender. 



This new genus bears a deceptive, superficial resemblance to Cacto- 

 pinus Schwarz, but is only very remotely related. 



