'276 



length as the fourth ; fourth and fifth stouter, rounded at each end, sub- 

 equal. Kostrum reaching between the intermediate coxse ; second joint 

 longest ; third and fourth subequal, a little shorter than the basal one ; 

 bucculsB narrow, sublinear. Pronotum transverse, obsoletely trans- 

 versely impressed ; surface curving uniformly with the head ; the ante- 

 rior angles bluntly rounded ; the lateral margins fringed with long cilise. 

 Anterior femora compressed ; armed with very stout spines on the .outer 

 and inner edges ; those of the tip longest. Odoriferous canal placed 

 inwardly, very short, spoon-shaped, scooped out. Scutellum about 

 two-thirds as long as the abdomen, bluntly triangular, bluntly rounded 

 at tip, the apex a little bent down. Corium short and wide, the outer 

 angle produced backward ; embolium long, grooved quite, or almost, 

 throughout. Outer margins of the venter compressed. 



1. M. oMiquus. 



Microjyorus obliquus, Uhler, Haydeu's Survey of Montana, 394. 



Inhabits the vicinity of Ogden, Utah ; also in Arizona (Dr. George 

 Horn). 



2. M. testudinatus. New sp. 



Ovate, broadly rounded, more convex than in M. obliquus. Head 

 convexly declining, conforming to the curve of the pronotum ; the ante- 

 rior margin broadly recurved and rounded, feebly emarginated in front; 

 the submargin with long sette and close stout spines, of which two are 

 on the tip of the tylus ; surface smooth, polished, impunctured ; near 

 the eye is a sunken point, and running obliquely forward each side from 

 the tylus is an impressed line -, tylus shorter than the lateral lobes ; the 

 latter bluntly rounded and obsoletely wrinkled ; antennse pale ferrugi- 

 nous ; the second joint slender, much the shortest, cylindrical ; the third, 

 fourth, and fifth subequal in length ; rostrum reaching between the in- 

 termediate coxfe, pale ferruginous ; the third and fourth joints subequal, 

 together longer than the second. Pronotum transverse, in front much 

 narrower than behind ; the anterior margin deeply sunken to receive the 

 head; the angles moderately protracted forward, bluntly rounded ; the 

 lateral margin steeply declining, the ei]ge very thin, convexly arcu- 

 ated, closely fringed with long ferruginous hairs ; posterior margin 

 feebly rounded ; the exterior angles slightly rounded, rectangular; surface 

 smooth, polished, obsoletely punctured each side and behind the middle ; 

 the anterior lobe smoother, and with a very few m.iuute punctures ; be- 

 hind each eye is a sunken point, and across the middle a series of six 

 similar points. Pectus pale piceous ; the disks of pleural pieces darker; 

 sides of prosternum a little raised into slender, slightly-rounded lobes. 

 Legs pale ferrnginous, more or less tinged with i^iceous ; the spines 

 blackish-piceous ; femora compressed, having two rows of punctures 

 carrying cilife ; anterior tiba3 compressed, the spines of outer margin 

 longer; the exterior submargin with a slender groove bearing coarse 

 punctures ; the posterior tibia? long, feebly curved, hardly thicker toward 

 the end ; tarsi slender, yellow, the intermediate joint small. Scutellum 

 very broad, short, polished, convex, remotely, finely, rather obsoletely 

 punctured ; the sides not distinctly siuuated ; the tip broad, bluntly 

 rounded. Corium short, much wider behind ; the costal margin very 

 convexly arcuated, moderately uniformly, deeply i)unctured ; the su- 

 tures punctured in rows ; the subcostal linear impression continned from 

 the base to beyond the middle, and coarsely punctured ; posterior mar- 

 gin bluntly oblique, a little bluntly produced at the outer angle ; mem- 



