THE liONG-IIORNED WOOn-HCHINCi HKKTI.ES. 1093 



O. (jracilis Fab., Miitenna' fuscous, Ic^s pale, tips of tibia' and 

 tarsi darker, length 10-13 mm., is known fi-oiii New York, New Jer- 

 sey and soutbward. 



2015 ((;r)Or)). (lincuioA ruficolus Fab., Eut. Syst, II, 1775, 311. 

 Elongate, .subeyliiulrical, rather robust. Palo reddish-yellow ; antoniue, 



elytra, tibiiie and tarsi nearly black. Thorax short, about as broad as long, 

 without discal black spots. Elytra rather densely clothed with gray pubes- 

 cence and with irregular rows of moderately fine oblong punctures; tips 

 subtruncate. Length 15-lS mm. 



Vigo County; rare. June 1*J. One s]>e('iiuen taken on tlie wing. 



LXXI. Tetkops Steph. 1839. (Gr., ''four + eyes.") 



This genus, sufficiently ehara'-terized in the key, is represented in 

 the State by a single species. 



2016 ((i507). Tktroi's monosticma Ilald.. Trans. Amer. Phil. Soc, X, 



1S57, 57. 

 Elongate, slender, cylindrical. Black, shining; elytra with l)lack, re- 

 <-umbent and erect hairs; head and thorax red, the latter with black spot 

 on disk; femora reddish-yellow; antennal joints paler at base, pilose with 

 long hairs. Thorax feebly constricted before and behind, sparsely and 

 rather coarsely punctured. Elytra with rows of rather closely placed, 

 coarse and deep punctures; tips rounded. Length 7-9 mm. 



Dubois and Spencer counties; scarce. May 22-]May 2-1. Taken 

 by sweeping low herbage along roadsides. The middle trochanters 

 of male are very strongly developed. T. jncunda Lee. is doubtless 

 a synonym, the legs in the specimens at hand varying from wholly 

 black to almost wholly reddish-yellow. 



LXXII. Tetraopes Scrville. 1835. (Gr., "fcmr + eyes.") 



iMedium-sized, stoutJ)odied species, having the antennjB shorter 

 than l)()dy ; thorax armed with a l)lunt tubercle each side and, in our 

 species, marked with four round black spots. They occur altogether 

 on the different species of milkweed (Asclepias) , in the stems and 

 roots of which they breed. Four of the eight known species have 

 been taken in the State. 



KEY TO INDIAN.\ SPECU'^S OK TETRAOPES. 



(/. Elytra with a common median and ai)ical heart-shaped black space; 



disk of thorax red, regularly convex. 2017. canteriator. 



(((/. Elytra with rounded or elongate black sjtots; disk of thorax distinctly 



elevated. 



h. Antenna' black, not annulate: abdomen very sparsely punctulate; 



larger median spot of elytra oblong. 2018. tetraophthalmus. 



