130 GEO. H. HORN, M. D. 



of the male are alwaj-s longer than the body resembling in this 

 respect antennatus. 



Lives in Hickory wood and appears early in the Spring, and is 

 abundant wherever that tree occurs and is often very destructive. 



C robiniie Forst. 



Closely resembles pichis in form and coloration but differs in the 

 antennal characters of the male and the structure of the hind tarsi. 

 The presternum is as broad as long being wider than in pictus and 

 also truncate at tip. The legs are also shorter than in that species, 

 the hind thighs not reaching the tip of the abdomen in the male. 



Infests Locust wood (^Rohinia pseud-acacui\ and appears in the 

 Autumn. I have seen a variety of this species with the W-shaped 

 band entirely obliterated. 



C <lecorus Oliv., charus Say, infaustus Lee, brevipennis Lee. 

 va7'. lutosus Lee. 



An extremely variable species which, with the mass of material 

 before me, is not capable of division. 



In the above synonymy bi-evipennis is doubtless a specimen captured 

 immediately after its emergence from the wood, its abdomen is soft 

 and elongate and from the markings belongs to the w/austus type; 

 lutosus seems to be an infaustus in which the yellow bands cover the 

 entire surface and have no black. 



Two forms remain which, for convenience in description, may be 

 considered varieties although not specifically separable. 



Var. infaustus Lee. — The elytra are fasciate after the type of pictus, 

 but the yellow bands are all wider and are arranged in the following 

 manner: (1) base of elytra narrowly yellow, (2) a subbasal trans- 

 verse band, these two very narrowly separated and sometimes con- 

 fluent, behind these (3) a W-shaped band, then (4) a transverse 

 band of irregular outline extending forward along the suture, behind 

 this a broader (5) transverse band, then at apex two (6 — 7) others 

 narrowly separated. (PI. II, fig. 8 a', is a feebly marked form). 



These baiitls often become confluent by becoming gradually broader, 

 80 that bands 1 — 2 — 3 form a broad basal yellow space. Band four 

 then disappears and we have the variety charus. Again the first three 

 bands remain separated with the fourth absent, or bands 1 — 4 may 

 become confluent and from this the entire surface becomes yellow 

 as in lutosus. 



This species extends from the Southern States to Kansas and 

 Colorado, in both varieties. 



