308 MEMOIRS ON THE COLEOPTERA 



Astylidius n. gen. 



This generic name is proposed for certain small species, hitherto 

 placed in Leptostylus, but which differ in the smaller, more acute and 

 subangulate lateral tubercles of the prothorax, situated a little 

 more markedly behind the middle, in the very narrow metasternal 

 episterna, longer antennae and in the very slender tarsi, the basal 

 joint of the posterior being three or four times as long as wide. The 

 type is Leptostylus parvus Lee., and in addition I have before me two 

 other species, which may be described as follows: 



Astylidius versutus n. sp. -Small, more slender than usual, convex, 

 rufo-piceous, rufous beneath, not very densely clothed with minute 

 luteo-cinereous hairs, which do not conceal the punctures, the elytra 

 each with a short transverse discal line of white at three-fifths; head 

 densely clothed with umber hairs, deeply indented between the strong 

 antennal tubercles, the antennae very slender and filiform, three-fourths 

 longer than the body, pale, mottled with darker, the articular apices 

 darker, the scape moderate, elongate-ovular; prothorax two-thirds wider 

 than long, finely, loosely punctate, the surface even, excepting a short 

 and very oblique ridge at each side of the middle anteriorly, the median 

 line slightly prominent behind the middle for a short distance; lateral 

 tubercles just behind the middle, small and obtusely angulate but prom- 

 inent; elytra three-fourths longer than wide, parallel, rounding to the 

 subacute apex in apical third, the apices obliquely and arcuately trun- 

 cate, without distinct angles; elevated lines feeble, the inner with a 

 small acute tubercle near the base, the punctures rather coarse, deep and 

 well separated, close on the inflexed flanks; femora strongly clavate, 

 tarsi slender, the first joint of the posterior slender, much longer than the 

 next two combined. Length (cf) 5.0 mm.; width 1.7 mm. District of 

 Columbia. 



Allied to parvus Lee., but differs in its more elongate form, longer 

 legs and antennae and somewhat in the form of the lateral thoracic 

 tubercles, which in parvus are a little smaller and more acute. 



Astylidius leiopinus n. sp. Somewhat similar to the preceding but 

 much stouter, convex, piceous, clothed rather closely and uniformly 

 with fine luteo-ochreous pubescence, the elytra with a narrow straight 

 oblique line on each, from the suture slightly behind the middle, to the 

 median line at three-fifths, also with a slight amount of white pubescence 

 exterior to this; head narrower than the prothorax, the antennae (9) 

 two-thirds longer than the body, pale, maculate with ochreous and brown 

 pubescence; prothorax twice as wide as long, nearly even, the two anterior 

 short oblique ridges obtuse, the lateral projection at basal two-fifths 

 obtusely angulate and distinct; punctures fine, not close, with a line of 

 slightly laiger punctures near the base; scutellum dark; elytra one-half 

 longer than wide, parallel, gradually rounding, than oblique in apical 



