THE SHOET- WINGED SCAVENGER BEETLES. 



387 



hb. Thorax oval, as long or longer than wide, not or but slightly nar- 

 rowed in front. 

 c. Species bi colored. 



d. Blue-black ; thorax and base of abdomen reddish-yellow. 



745. BLANDUS. 



dd. Piceous; elytra red, nearly smooth. quediinus. 

 cc. Species not bi colored. 



e. Entirely black, elytra bronzed; abdomen distinctly punctate. 



/. Notch of last ventral of male oval. 746. sordidus. 



ff. Notch of last ventral triangular. cephalotes. 

 ee. Piceous or fuscous yellow, head black; abdomen sparsely punc- 

 tured beneath. inquietus. 

 aa. Dorsal punctures more than three. 

 g. Dorsal punctures four. 



h. Thorax nearly square ; length 5 mm. 747. ventralis. 

 hh. Thorax longer than wide, its sides parallel ; elytra black, as long 



or longer than thorax, nearly smooth at sides and base. 



FALLACIOSUS. 



gg. Dorsal punctures five ; thorax oblong, notably longer than wide. 



i. Piceous or brownish. 



j. Last ventral of male without a notch but with a channel ex- 

 tending the entire length of the segment. 748. parvus. 

 jj. Notch of last ventral distinct, broad, semicircular. 



749. MICROPTHALMUS. 



ii. Black, shining; notch of last ventral very feeble and with a long 

 triangular smooth space. 750. nigritulus. 



ggg. Dorsal punctures seven or eight, 751. multipunctatus. 



744 ( 2201). Philonthus cyanipennis Fab., Ent. Syst, I, 1785, 525. 

 Elongate, robust. Black, shining; elytra metallic blue; antennas and 



tarsi piceous. Head large, quadrate, as wide or wider than thorax, coarse- 

 ly punctured behind the eyes. Thorax oval, slightly narrower in front. 

 Elytra slightly wider than thorax, together broader than long, coarsely and 

 rather densely punctate, sparsely pubescent. Abdomen iridescent, more 

 coarsely and sparsely punctured than elytra. Length 12-15 mm. 



Throughout the State; frequent. April 27-October 23. Oc- 

 curs on fleshy fungi. 



745 ( 2202). Philonthus blandus Grav., Mon. Col. Micr., 1806, 72. 

 Elongate, slender. Head, elytra and apical half of abdomen black. 



shining, often with a bluish tinge; thorax, base of abdomen and legs red- 

 dish-yellow; antenna? piceous. Head subquadrate, sparsely punctured be- 

 hind the eyes. Thorax scarcely wider than head, sides sinuate near base. 

 Elytra slightly wider than thorax, together one-fourth longer than wide, 

 sparsely and finely punctate. Abdomen as wide as elytra, very sparsely 

 punctate. Length 5-5.5 mm. 



Throughout the State; scarce. May ll-October 31. Occurs in 

 leathery fungi on beech and elm stumps. 



