420 AMERICAN PACHYBRACHYS (cOLEOPTERA) 



marginal interspace numerously punctate and the striae irregular or frag- 

 mental and lightly impressed; prothoracic markings less broadly suffused, the 

 general color lighter in tone, eyes a little closer, especially noticeable in the 

 female, in which they are separated by only twice the length of the basal 

 antennal joint or slightly more. 



Distribution. — New York: The type is a male from Mr. Leng's Collection 

 and was taken in the vicinity of New York City. Other examples from Mr. 

 Leng bear the label "L. I." (Long Island). Massachusetts: Framingham, Aug. 

 4, 1907 (Frost). New Jersey: (Leng Coll.); Anglesea (Van Dyke Coll.). 

 Maryland: Plummer's Island, Aug. 2, a female collected by Schwarz. Georgia: 

 Tybee Island, July 2 (Wenzel). Alahayna: Wadley (H. H. Smith— Nat. Mus. 

 Coll.). 



10 L Pachybrachys roboris new species 



Yellow, with close set reddish brown or rust colored punctures 

 and standard spots, the latter diffuse and variable in develop- 

 ment, and in some examples — more especially males — becoming 

 dark brown or fuscous in shade; eyes moderately distant, front 

 without ocular lines; front claws of male slightly larger than the 

 others. Ave. length 2.8 mm. Eastern half of United States. 



Head closely punctate, spots rather broad, eyes slightly prominent, separated 

 by from one and three-fifths to one and seven-eighths times the length of the 

 basal antennal joint in the male, and from two and two-thirds to three times the 

 length of the basal joint in the female. Antennae about three-fourths as long 

 as the body in the male, barely half the length of the body in the female, the 

 basal joint dark above, the outer joints infuscate, tenth in the male scarcely 

 three times as long as wide. 



Prothorax widest well in advance of the base, the sides at this point rather 

 strongly rounded or subinflated in the male, less strongly so in the female; the 

 M broadly diffuse, leaving the usual pale areas more or less nebulously defined, 

 the punctuation in the latter a little less dense and somewhat uneven, leaving 

 small scattered slightly convex yellow spots; side margins not smoother, or 

 only narrowly and incompletely so. 



Elytra densely confusedly punctate with fragments of striae toward the sides 

 and rear, the lateral striae more or less distinct, and often — especially in the 

 female — with one or two slightly prominent discal costae defined by punctures; 

 marginal interspace punctate, more closely and confusedly so in the female; 

 shield small, irregularly rotundate, yellow; standard spots vaguely indicated 

 on the disk, the three marginal ones fairly distinct. 



Pygidium brown with two oval yellow subapical, and a smaller lateral spot , 

 the latter sometimes obscure or lacking. Body beneath brown, last ventral 

 segment in great part yellow. Front legs brown and yellow, typically marketl, 

 but variable in proportion of colors; middle and hind thighs brown with extrem- 

 ities pale, the corresponding tibiae brown and usually only feebly and indefi- 

 nitely paler at base, but occasionally with the basal third distinctly yellow. 



Length 2.4 to 3.2 mm.; width 1.3 to 1.8 mm. 



