— 1 96 — 



Presternum wide between the coxae, dilated at tip and more or less emarginate, 

 prolonged and meeting the mesosternum and slightly overlapping it; 



Elytra acutely prolonged at tip crinicornis. 



PrOStemum moderate, not prolonged; elytral tip truncate; 



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



prosternuin between the coxae longer than wide, pictus. 



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

 Presternum rather widely separating the coxae, being as broad as long and 



as wide as the coxal cavity robinise. 



Presternum longer than wide, not as wide at its middle as the coxal 

 cavity, decorus. 



C. antennatus White. Longic. VIII, 2, 1855, p. 252; eurysMhus Lee. Proc. 

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



Length 15-20 mm. =60-80 ins. Hab. Arizona, Sonora. California. 



Color light reddish brown or nearly black with pubescent bands of 

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



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

 556; similigidtatus Chev. Mon. 1861 p. 380. 



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

 isiana. 



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

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

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

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

 presternum which in erythropus is similar to picius. 



C. pictus Drury Ins II. 1773 Ind.; I. p. 91. t. 41 f. 2; Lee. f, A. P. sec. 2 II. 

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

 121. t. I. f. 7. 



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

 in Spring and is abundant wherever that tree occurs. 



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

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

 and Gory Mon. p. 13 t. 4. f. 14 t. 1 f. a. 



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

 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 

 ipplj to the 9 an d I have seen a specimen taken by Mr. Welles near 

 ( 1 lit ago 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; Lap and Gory Mon. p. 14, t. 

 4, £ 15; Hald. Trans. Am. Phil. X, p. 39; charus Say. Host. Journ. I, 1835, p. 193: 

 Lee. I. A. P. ser. 2. IT, p. 17: Col. of Kan s. 1859. p. 20, t. 1, f. 16. var.: infaustus 



