H. C. FALL 389 



claws of the male. Its close relationship to confederatns is alluded 

 to under that species. 



73. Pachybrachys calcaratus new species 



Sordid yellow with tliti'use fuscous niarkings which may be so 

 extensive as to constitute the prevailing color; clytral striae evi- 

 dent at sides and rear, front without ocular lines; front tibiae of 

 male with subapical rectangular tooth on the inner margin due to 

 the abrupt narrowing of the tibia, and a long stout curved termi- 

 nal spur; front claws of male not appreciably enlarged. Ave. 

 length 2.9 mm. Michigan to Louisiana. 



Head not wider than the thoracic apex, front coarsely moderately closely 

 punctate, markings variable. Eyes separated in the male by one and one-half 

 times the length of the basal antennal joint, or by a distance equal to or very 

 slightly greater than the vertical width of their upper lobes; in the female by 

 approximately two and one-half times the length of the basal joint of the 

 antennae. Antennae moderate, attaining the hind coxae in the female, longer 

 in the male, tenth joint about three times as long as wide, outer joints fuscous. 



Prothorax distinctly arcuately narrowed from near the base, a very short 

 slight sinuation at the hind angles; punctuation coarse, rather close, side mar- 

 gins narrowly smooth, at least in part; markings variable but usually broad, 

 leaving two basal and a median apical s])ot and the front angles irregularly pale. 



Elytra coarsely punctate, the two outer striae distinct and moderately im- 

 pressed, the discal ones much confused or broken, sometimes with one or two 

 subentire; shield not large but usually well defined and convex; marginal inter- 

 space with coarse punctures, usually more numerous in the female, but some- 

 times nearly wanting; markings variable, the standard spots sometimes small 

 and isolated but more frequently broad and confluent, the general color fuscous 

 with numerous small scattered yellow areas. 



Pi/gidium blackish with two oblique yellow spots. Body beneath blackish, 

 the last ventral and side margins of the abdomen sometimes marked with 

 yellow. Legs brownish fuscous, base and apex of middle and hind thighs 

 yellow; front thighs with large yellow spot or stripe on the anterior face. 



Length 2.6 to 3.2 mm.; width 1.4 to l.S mm. 



Distribution. — Illinois: Hinsdale, June 21 (Bebb), type d'; 111. (Stromberg 

 in Blanchard Coll.); (Liebeck Coll.). Michigan: Detroit (Hubbard and 

 Schwarz). Iowa: One cf without specific locaUty. Kansas: Salina (Knaus). 

 Louisiana: Vernon Parish (Leng Coll.); Vowell's Mills (Leng). 



The Louisiana specimens are less heavily marked than the 

 Illinois and Iowa ones, but they agree with each other, and one of 

 them is a male with the remarkable front tibial character pre- 

 cisely as in type. This species in general facies resembles pretty 

 closely some examples of atomarins and other similar species, but 



TRANS. AM. ENT. SOC, XLI. 



