A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 129 



Pronotum nearly twice as wide as long, wider at base than at apex, widest 

 along middle; sides sinuate and nearly parallel at middle, arcuately converging 

 toward base and apex ; anterior margin slightly, arcuately emarginate, without 

 a distinct median lobe ; base arcuately emarginate on each side, median lobe 

 strongly produced and broadly rounded ; disk slightly uneven, with a broad, 

 longitudinal, median depression, a vague, rounded depression on each side near 

 anterior margin, separated from median depression by a smooth, irregular 

 callosity, and with a subcariniform callosity at base opposite middle of each 

 elytron; surface coarsely, irregularly punctate, rather sparsely at middle, but 

 more confluently at sides. 



Elytra slightly wider than pronotum, about one and two-thirds times as long 

 as wide ; sides nearly parallel from humeral angles to apical third, then arcuately 

 converging to tips, which are separately broadly rounded ; lateral margins 

 coarsely serrate ; basal depressions broad and very deep ; humeral depressions 

 broad and shallow ; surface glabrous, coarsely, densely, deeply, irregularly punc- 

 tate. Each elytron with four more or less distinct longitudinal costae ; first dis- 

 tinct, moderately elevated from apex to near base, sinuate near apex; second 

 and third irregular and broadly interrupted by foveae ; fourth barely indicated, 

 following outline of lateral margin; and with two transverse, irregular foveae 

 between first and third costae, one in front of middle, the other near apical 

 third. 



Abdomen beneath rather sparsely, finely, irregularly punctate, more densely 

 at sides, sparsely clothed at sides with short, recumbent, white hairs, without 

 distinct lateral callosities, intervals vaguely granulose ; last visible sternite 

 broadly, deeply, arcuately emarginate at apex, without a submarginal ridge, 

 lateral margins serrate; eighth tergite thickened at apex, dorsal margin trans- 

 versely truncate at apex and projecting over ventral margin, which is arcuately 

 elevated at middle when viewed from tip, surface coarsely, sparsely punctate, 

 but not longitudinally carinate. Presternum rather densely, coarsely punctate 

 at sides, more sparsely punctate at middle, sparsely clothed with long, erect, 

 white hairs ; anterior margin feebly rounded, with a vague, broad, median 

 lobe. Anterior femur with a large, acute tooth, which is dentate on outer 

 margin. Anterior tibia slightly arcuate, with a large, acutely triangular tooth 

 near apical third ; middle tibia slightly arcuate, dilated at apex, with a small 

 tooth at apical third ; posterior tibia straight. 



Length 13.5 mm., width 5.25 mm. 



Redescribed from a male in the United States National Museum, 

 collected in the Royal Palm Park, Fla., March 24, 1930, by J. C. 

 Pallister. 



Female. — Differing from the male in having the front of the head more 

 strongly convex and more sparsely pubescent, the last visible sternite more 

 elongate and broadly emarginate at apex, the emargination transverse and 

 crenulate at bottom, the eighth tergite with the dorsal margin not projecting 

 and the vertical margin scarcely elevated at middle, and the tibiae unarmed 

 near apices. 



Type locality. — Of floricola, "Amerique Boreale." Of femorata 

 Castelnau and Gory (not Olivier) , "Amerique Boreale." Of calcarata, 

 Pennsylvania. Present location of these types unknown to the writer. 



Distribution. — This species has a wide distribution over the eastern 

 part of North America. Material has been examined from the District 

 of Columbia and various localities in the following States : Alabama, 

 Florida, Georgia, Illinois, Louisiana, Maryland, Massachusetts, Mis- 

 sissippi, Michigan, New Jersey, New York, North Carolina, Penn- 

 sylvania, South Carolina, Texas, Virginia, West Virginia, and Wis- 

 consin. It has been recorded in the literature from the Provinces 

 of Quebec and Ontario, Canada, and from Indiana and Connecticut. 

 Kerremans (m Wytsman's Genera Insectorum, fasc. 12, pt. 3, 1903, p. 

 187) records it from California, but this is an error, as the species is 

 not found west of the Rocky Mountains. 



416206—42 9 



