596 Coleopterological Notices, V. 



termitophilous. The following species occurs with a small slender 

 yellow ant, apparently of the genus Solenopsis : — 



M, crinita n. sp. — Fusiform, convex, somewhat sinning, pale yellowish- 

 testaceous throughout, the pubescence long, suberect, rather dense and very 

 conspicuous, with long sparse setae bristling along the sides of the body ; 

 punctuation fine, somewhat close but not at all conspicuous. Bead trans- 

 verse, three-fourths as wide as the prothorax, the eyes rather small and 

 coarsely faceted, obliquely oval, at their own length from the base ; infra- 

 lateral carina tVeble but distinct ; antennse slender, quite distinctly longer 

 tban the head and prothorax, just visibly incrassate, the second joint longer 

 than the tbijd, the latter longer than wide, four to ten subsimilar, rather 

 compactly joined, small, only slightly wider than long, eleventh very long, 

 compressed, gradually pointed, nearly as long as the four preceding combined. 

 Prothorax twice as wide as long, the sides convergent and very feebly arcuate 

 from base to apex, the latter transversely truncate, narrower than the base 

 which is strongly and evenly arcuate throughout ; angles slightly rounded, 

 the anterior scarcely at all deflexed ; hypomera strongly inflexed and invisi- 

 ble from the side. Elytra a little shorter and narrower than the prothorax, 

 strongly transverse ; sides feebly divergent from base to apex, the latter 

 transverse ; humeri completely concealed. Abdomen conical, at base slightly 

 narrower than the elytra ; first three tergites subequal and much shorter 

 than either the fourth, fifth or sixth. Legs slender; tarsi short, evidently 

 5-5-5-jointed, the first joint of the posterior slightly longer than the second. 

 Length 1.3 mm. ; width 0.4 mm. 



Colorado (Caiion City). 



This species differs from piclipennis in coloration and several 

 other characters, but is apparently closely allied, if not identical, 

 with the form hitherto known from the District of Columbia. 



Among other species, the material referred to includes in addition 

 a specimen of Osypoda nigriceps from Iowa City, Iowa, and one 

 of Mic7^odoma occipitalis from Walnut, Arizona. In the latter the 

 broad feeble impression near each side of the depressed pronotum 

 is strongly developed, proving that it is a normal character and not 

 produced by shrinkage of the exoskeleton ; analogous lateral im- 

 pressions of the pronotum are well developed in Ecitophila oin- 

 nivora of Wiismann, which may be somewhat related to Microdonia. 



There is also a specimen of Amblopusa brevipes from Victoria, 

 Vancouver, which is pale flavate throughout, doubtless immature ; 

 it is just possible that there may be a minute basal node anchylosed 

 to the very elongate first joint of the labial palpi, but it is not 

 clearly discernible without dissection. Actocharis of Fauvel. is 

 closely allied to Amblopusa and belongs to the same group, the labial 

 palpi being 2-jointcd ; but the joints are equal in length, with the 



