NORTH AMERICAN COLEOPTERA. 103 



coarse punctures external to which are a few punctures sparsely placed. Elytra 

 one-third wider than the thorax and about as long, surface shining with the punc- 

 tures coarse distantly placed, arranged in about nine series. Abdomen moderately 

 coarsely and closely punctate. Legs yellowish testaceous. Length .3-l-,40 inch ; 

 .5-10 mm. 



Male. — Seventh ventral segment with a triangular emargination extending 

 about one-fourth the length of the segment, its sides slightly inflexed. 



Female. — Ventral segments entire (PI. 2, fig. 19). 



A conspicuous species, readily known by the narrowed head and the 

 sculptui'e of the head and elytra. 



Occurs from Massachusetts to District of Columbia; westward to 

 Nebraska. 



25. <.\ sellatliin Lee. — Black, shining, elytra rufo-testaceous, with a broad 

 sutural black space reaching two-thirds to apex. Antennae rufo-testaceous, nearly 

 as long as the head and thorax, third joint very little longer than the second 

 Head oval, eyes slightly rounded, sides gradually narrower to the neck, surface 

 shining, coarsely and moderately closely punctate. Thorax narrower than the 

 head, one-fourth longer than wide, median smooth space distinct, punctures each 

 side coarse and sparsely placed. Elytra one-third wider than the thorax and dis- 

 tinctly longer, the punctuation moderately coarse and closely placed. Abdomen 

 rather finely and moderately closely punctate. Legs yellowish testaceous. 

 Length .32-.36 inch; 8-9 mm. 



Male. — Last ventral with a triangular emargination extending one-fourth the 

 length of the segment, the sides of the notch slightly inflexed (PI. 2, fig. 20). 

 Female. — Ventral segments entire. 



A very easily known species, resembling the preceding in color, but 

 distinguishable by the sculpture. 



Occurs in Illinois, Kansas, Nebraska and Dacotah, rare. 



26. C serpen tin tun Lee. — Slender, elongate, body beneath, anterior 

 portion of head, two apical and two basal segments of abdomen black, the rest of 

 the surface reddish yellow, shining. Antennae nearly as long as the head and 

 thorax, rufo-testaceous, joints 2-4 darker, the third slightly longer than the second. 

 Head oval, very shining and with very few punctures, the sides arcuately nar- 

 rowed from the eyes to the neck; color reddish yellow, that portion of the head 

 in front of an arcuate line starting slightly behind the eyes, black. Thorax nar- 

 rower than the head, almost a third longer than wide, apex distinctly narrower 

 the punctures rather coarse forming an irregular discal series on each side of the 

 smooth space, and with very few punctures between this and the lateral margin. 

 Elytra one-fourth wider than the thorax and slightly shorter, conjointly nearly 

 square, the punctuation coarse, deep and distant, arranged in very vague series i 

 color reddish yellow with the scutellar region narrowly pieeous. Abdomen shin- 

 ing, the punctuation rather coarse and very sparsely placed. Legs pale reddish 

 yellow.- Length .38-.40 inch; 9.5-10 mm. 



Male. — Seventh ventral segment with a triangular emargination, extending one- 

 fourth the length of the segment, the sides slightly inflexed (PI. 2, fig. 21). 

 Female. — Ventral segments entire. 



