NATURAL SCIENCES OF PHILADELPHIA. 99 



The paraglossae of the genuine Harpalus are rather thick, not longer than 

 the ligula, and are furnished on the sides with a few bristles ; the ligula is 

 broader at the tip and truncate, with the side angles acute. In Selenophorus 

 the paraglossae are flat, longer than the ligula, without lateral bristles ; and 

 the ligula is narrow, not dilated at the tip. I am therefore inclined to believe 

 that Selenophorus should be considered a genus, and not a group of Harpa- 

 , lus, as I have recently placed it. 



The species of Harpalus in my collection may be grouped as follows : (the 

 measurements are in decimals of the English inch.) 



A. Elytra very deeply sinuate at tip ; outer angle acute and dentiform in the 



female; third interval without dorsal puncture ; abdomen finely punc- 

 tured and pubescent towards the base. Body elongate. 



56 -76. Thorax narrowed behind, side margin depressed, base scarcely 

 punctured ; color dark ferruginous, elytra piceous, deeply striate. Sandy 

 places ; Middle States, Kansas 1. erraticus Say. 



56 -66. Thorax narrowed behind, margin not depressed, base punctu- 

 late, hind angles not rounded at tip ; color nigro-piceous, antennae and legs 

 ferruginous. New Mexico 2. retractus Lee. 



B. Elytra truncate, or deeply sinuate at tip ; anterior tibiae with the outer 



angle prolonged behind, forming a small tooth ; abdomen sparsely punc- 

 tured and pubescent. 



a. Elytra truncate ; armed with a sutural spine in the female ; dorsal 

 puncture distinct. 



38 -40. Thorax narrowed behind, angles rounded, basal foveae small, 

 punctured ; color beneath dark piceous or black, above metallic blue or 

 green, rarely black. Kansas, New Mexico, Saskatchewan, Montreal, Canada. 



3. amputatus Say. 



b. Elytra transversely sinuate, outer angle acute in female : dorsal punc- 

 ture wanting; sides of elytra finely punctured and pubescent. 



38 -40. Thorax narrowed behind, hind angles not rounded; basal foveae 

 small, finely punctured; color beneath dark piceous or black; legs ferrugin- 

 ous or black; above metallic green or coppery, rarely black. Middle States, 

 Canada, Newfoundland 4. viridiaeneus Beauv. 



C. Elytra obliquely, but slightly sinuate at tip ; abdomen without acces- 



sory setae, finely punctured and pubescent towards the base. 



a, Mentum tooth completely wanting : elytra without dorsal puncture ; 

 feet black. 



80 -94. Thorax narrowed anteriorly, side margins broadly depressed, 

 and basal foveas densely punctulate. Middle, Southern and Western States, 

 Canada, Kansas 5. caliginosus Say. 



b. Mentum tooth more or less distinct ; elytra without dorsal puncture ; 

 antennae and feet ferruginous. 



*Side margin of thorax depressed, scarcely wider behind ; sides and 



base punctured. 



f Thorax nearly square ; elytra not punctulate. 



50. Hind angles slightly rounded ; sides feebly rounded. Middle States. 



6. f a u n u s Say. 



42 -48. Hind angles scarcely rounded ; sides more rounded in front. 



New York 7. convivus n. sp. 



f-j- Thorax slightly narrowed behind ; hind angles not rounded. 



54 -58. Elytra punctulate, at least at the sides. Illinois. 



8. v a g a n s n. sp. 

 1865.] 



