FAMILY XT. STA I'll YLINID.K. 



l>. Legs I tlnck. 



e. Sides >-,f thorax feebly munded ; elytra pale, with suture, sides and 

 a narrow stripe black. MAJOK. 



cc. Sides of thorax much rounded; elytra wholly black. 



888. STYGICUS. 

 l>h. Legs yellow. 



(/. Color aln.ve wholly or in great part black or piceous. 

 e. Elytra in part at least dull yellow. 



/'. Suture and sides of elytra black. 889. VITTATTS. 



/'/'. Suture and outer apical angles black. FASCIATUS. 



ee. Elytra wholly black; under surface pale yellow. BICOLOR. 



<lil. Color above reddish-yellow. 



!/. Sides of elytra fuscous. 890. LATEKAIJS. 



////. Spot on head, two on thorax and part of dorsal surface of ab- 



domen, black. 891. OCCIPITALIS. 



0. /'( iiiurtilix Grav.. 7-7.5 mm. and (). major Grav., 9 mm. in 

 length, have both been recorded Ity Dury from Cincinnati. 



888 ii'c.'.ii'i. OXYPOIU-S STYGicrs Say. Trans. Amer. Phil. Soc., IV, 1X34. 

 4.".'. l; ibid. II. 575. 



Elongate, rather robust. I>lack. strongly shining; antennae piceous, 

 joints U to 5 and the tarsi reddish-brown. Thorax widest at middle, thence 

 much narrowed to base, sides strongly rounded; surface, as well as that of 

 head, smooth. Elytra together one-hall' wider and one-third longer than 

 thorax, each with a snhsutural and two discal strhe, the former finely, the 

 latter more coarsely punctate, and with a number of coarse, scattered punc- 

 tures intervening. Abdomen at base slightly narrower than elytra, smooth. 

 Length Ci.5 --S.5 mm. 



Southern half of State; frequent. June 11-Xovember 4. 



^'. (2093). OXYPOKUS VITTATUS Grav.. Mon. Col. Micr.. 1X00, 195. 



Oblong, robust. Black or piceous. shining; elytra dull clay yellow, the 

 suture and a stripe on sides, gradually widening from humerus to apex, 

 black; legs and base of antenna- reddish-yellow. Head slightly wider than 

 thorax, the base very finely and sparsely punctate. Thorax one-half wider 

 than long, sides strongly curved, the base much narrower than apex, disk 

 smooth. Elytra one-third wider and distinctly longer than thorax, with a 

 sutural and two discal rows of rather tine punctures and a number of 

 coarser scattered ones. Abdomen as wide as elytra, smooth, the tip of the 

 last segment pale. Length 5.5-C mm. 



Lake and Vitro counties; frequent. July 2-October 9. Occurs 

 especially in cluiiij)s of overlapping fungi at base of stumps. 



O. l',i.^ HI/US Me'sh. and O. bicolm- Fauv.. are in all probability 

 only color varieties of t'ifffihts. T have included them in the key. 

 that Hie variation may lie noted, though authentic specimens of 

 neither are in the collection at hand. 



