288 



FAMILY VIII. SILPHIDiE. 



559a (1787a). Liodes basalis dichroa Lee, loo. Git. 



A variety of basalis which differs in having the elytra either entirely 

 orange-red, or the suture and apex only, black. 



Jennings and Posey counties: scarce. May 25-July 12. 



L. obsoleta Horn and L. geminata Horn, both piceous black, the 

 former 2-3 mm., the latter 3-3.5 mm. in length, are said to range 

 from New England and Canada to Virginia and Illinois. 



XI. Stetholiodes Fall. 1910. (Gr., " breast + smooth. " ) 



Oblong-elliptical, subdepressed ; labrum curved in front with a 

 small, shallow median notch ; presternum as long before the coxse 

 as the thickness of the latter from front to back; mesosternum 

 strongly oblique ; other characters nearly as in Liodes. One species 

 is known. 



560 ( ). Stetholiodes laticollis Fall, Can. Ent., XLII, 1910, 4. 



Form given above. Dull reddish-yellow, shining. Antennse reaching 



hind angles of thorax, third joint as long as the three following, seventh 

 larger than eighth, the latter equal to sixth, ninth to eleventh much larger. 

 Thorax about twice as long as wide, a little wider than elytra, sides broad- 

 ly curved and gradually narrowed from base to apex, hind angles sub- 

 rectangular ; disk minutely alutaceous, finely and sparsely punctate. Ely- 

 tra more than twice as long as thorax, each with nine regular rows of 

 punctures, the outer one distant from the margin ; intervals nearly flat, 

 sparsely and irregularly punctulate. Length 2.7 mm. 



Steuben County; rare. May 25. Sifted from sphagnum moss. 

 The unique specimen is in the collection of Mr. Fall. 



XII. Cyrtusa Erichs. 1842. (Gr., "to curve or bend.") 



This genus is composed of very small, oval, convex forms (Fig. 

 143, c), having the antennse 10- jointed, with a four-jointed club 

 and with joints 4 to 6, very short, together not longer than the third. 

 The front and middle tarsi in both sexes are composed of five joints, 

 while the hind ones have but four. 



KEY TO INDIANA SPECIES OF CYRTUSA. 



a. Elytra punctured over the entire surface, the rows of punctures often 

 much confused. 561. picipennis. 



an. Elytral intervals smooth and shining, the rows of punctures distinct. 



562. EGENA. 



561 (1790). Cyrtusa picipennis Lee, New Sp. N. Am. Col., I, 1863, 25. 

 Oval, strongly convex. Uniform chestnut or dark reddish-brown, shin- 

 ing. Thorax more than twice as wide as long, narrowed in front, hind 

 angles distinct but obtuse, surface rather sparsely and very finely punc- 



