— 196 — 



Frosternum wide between the c<>xje, dilated at tip and more or less emargiiiair. 

 prolonged and meeling the niesosternum and slightly overlapping it; 



Elytra acutely piolonged at tip, crinicornis. 



Prosternum moderate, not prolonged; elytral lip truncate; 



2d joint of hind tarsus glabraus at middle, antennae of i^ longer than body: 



prosternum between the coxae longer than wide, pictus. 



2d joint of hind tarsus densely pubescent; antenna: not longer than body: 

 Prosternum rather widely separating the coxje, being as broad as long ami 



as wide as the coxal cavity robiniae. 



Prosternum longer than wide, not as wide at its middle as the coxaJ 

 cavity, decorus. 



C. antennatus White. Lnngic. VIII, 2, 1855, p. 252; eurystethns Lee. Proc. 

 Al. Phil. 1858, p. 82; Arcan. Nat. 1859. p. 127, t. 13, f. 9. 



l>;ngth 15-20 mm. =60-80 ins. Hab. Arizona, Sonora. California. 



Color light reddish brown or nearly black with pubescent bands of 

 liifhter color more or less obliterated. Lives in Mesquit wood. 



C. crinicornis Chev. Mon. i860 p. 460: sanguinipes Dup. Dej. Cat. 3 ed. p. 

 _;S*>; simili<inlla(us Chev. Mon. 1861 p. 380. 



Length 10-20 mm. =.40. 84 in. Hab. Cal., Mexico, Arizona, Texas and Lou- 

 isiana. 



This is the species which formerly appeared in our lists under the 

 name erylhropus Chev. The species to which that name right- 

 fully belongs has not yet occurred north of Mexico. It resembles crini- 

 lornis in the sudden constriction of the thorax but differs in the 

 prosternum which in erylhropus is similar \.o picius. 



C. pictus Drury Ins II. 1773 Ind.; I. p. 91. t. 41 f. 2: l^c. |, A. P. sec. 2 JI. 

 [). 177; Harris Ins. of Mass. p. 85; Osten-Sacken Proc. Ent. Soc. Phil. I. 1862 p. 

 121. t. I. f. 7. 



Length 12-20 mm. =42-89 in. Lives in Hickory wood and appears early 

 in Spring and is abundant wherever that tree occurs. 



C. robiniae Porst. Nov. Spec. Ins. 1771 p, 43; Lee. J. A. P. sec. 2 II. p. 17; 

 Walsh Proc. Ent. Soc. Phil. 1866 p. 204; flexaosus. Fab. Syst. Ent. p. 191; Lap. 

 •md Cory Mon. p. 13 t. 4. f. 14 t. i f. a. 



Length 12 20 in. =48-80 mm. Hab. Infests Locust wood and appears ii4 

 Autumn. 



The much greater length of the antennae and posterior thighs will 

 assist in separating pictus (^ but the characters of the table are all that 

 apply to the 9 3^"*^ ^ have seen a specimen taken by Mr. Welles near 

 Chicago in which the tarsal character appeared to be lacking. The two 

 species are very closely related. 



C. decorus Oliv. Ent. IV, 70 p. 63, t. 8. f. 92; [.ap and (iory Mon. p. 14, i. 

 4, I. 15: Maid. Trans. Am. Phil. X, p. 39; char iis Sa.y. Host. Journ. I, 1835, p. 193: 

 l,er. J. A. I*, ser. 2. H, p. 17: Col. of Kans. 1859, p. 20. t. I, f. 16. van; wfaiishts 



