18G GEO. H. HORN. M. D. 



tubercle behind the middle, disc smooth, a few coarse punctures alung the base. 

 Elytra elongate oval, nearly twice as long as wide, sides abruptly deflexed, surface 

 smooth, a few coarse punctures near the side and beneath the humeri. Body be- 

 neath smooth, impunctate, femora smooth. Length .84-. 88 inch; 21-22 mm. 



The tarsal characters are as in (jlg<i>^. In the three specimens before 

 me I observe no noteworthy variation. A specimen loaned me by Mr. 

 Ulke has red thorax and femora, it is merely immature. 



Occurs in New Mexico, near Santa Fe. 



M. ariiiutiiiu Lee. — Moderately elongate, shining. Front sparsely punctate 

 each side. Scape of antennse smooth, joints 3-6 indistinctly annulate. Thorax a 

 little wider than long, sides slightly arcuate and with an acute, post-median, short 

 spine, surface smooth, a few punctures along the base and under the spine. Ely- 

 tra elongate oval, nearly twice as long as wide, sides abruptly declivous, either 

 obtusely margined % or not 9? the surface with coarse punctures sparsely and 

 irregularly placed, extending two-thirds to apex, the deflexed portion more 

 coarsely and closely punctured at base, more sparse posteriorly and reaching 

 nearlv to apex. Body beneath and femora smooth. Length .66-1.00 inch ; 16.5- 

 25 mm. 



The tarsal characters are as in glyas. The males have the elytra 

 more abruptly declivous than the female and the punctures of the surface 

 are coarser and more numerous. 



Occurs in Colorado and Texas. 



M. obliisiini Lee. — Form moderately elongate, black shining. Front 

 sparsely punctate each side. Scape of antennse smooth, joints 3-6 annulate with 

 cinel-eous at base. Thorax slightly longer than wide without trace of lateral tu- 

 bercle or spine, the surface coarsely not closely punctate, the deflexed sides 

 smoother. Elytra oval, not twice as long as wide, the sides rather abruptly de- 

 flexed, surface rather sparsely punctate two-thirds to apex, the punctures not large, 

 but submuricate near the humeri and at the base of the deflexed portion. Body 

 beneath and femora smooth. Length .75 inch ; 19 mm. 



Anterior tarsi with the first three joints spongy pubescent beneath ; 

 middle tarsi with the first two joints having a small spongy pubescent 

 space each side, the third joint spongy pubescent, the lobes well sepa- 

 rated ; hind tarsi with a small pubescent space on each side of the third 

 joint alone. 



Of this species I have seen the type from Mr. Ulke's cabinet, collected 

 in Utah. 



M. spoliatuili n. sp. — Form moderately elongate, black, shining. Front 

 sparsel}' punctate each side. Scape of antennse smooth, joints 3-6 indistinctly 

 annulate. Thorax wider than long, slightly narrower at base than apex, sides 

 slightly arcuate in front of the small, acute lateral spine and nearly straight be- 

 hind it, disc sparsely indistinctly punctate, a few coarse punctures at apex and 

 base, the deflexed portion coarsely punctured in front. Elytra elongate oval, 

 nearly twice as long as wide, sides abruptly deflexed, surface smooth, a few small 



