NATURAL SCIENCES OF PHILADELPHIA. 243 



brown, rigid and erect; the two outer strife are deep, the third is short at the 

 base, but continued by punctures of large size almost to the middle. The ab- 

 domen is finely and densely punctured, the segments apparently connate, the 

 metasternum coarsely and irregularly punctured. 



2. D.incomptura, ovale convexum, nigrum nitidum, pube longiore fusca 

 vestitum, thorace punctulato, capite abdomineque rufescentibus, elytris dense 

 punctulatis, vitiis angustis impunctalis ornatis, pilis bifariam positis, striis du- 

 abus externis profundis, antice paulo abbreviatis ; antennis testaceis, pedibu3 

 piceis. Long. 09. 



South Carolina (Dr. Zimmermann,) and Pennsylvania ; two specimens. The 

 punctures of the elytra are very fine and close set, arranged in bands, with in- 

 tervening, narrow, smooth bands ; the pubescence is brown, and the hairs lie 

 some longitudinally, some obliquely directed outwards ; the striae are deep, do 

 not extend to the base, but are abbreviated about the anterior fourth ; no vestige 

 of a short humeral stria is seen. The abdomen is finely, the metasternum more 

 coarsely and less densely, but equally punctured. 



CCENOCARA Thorns., Skand. Col. i. 90, (1859.) 



Synonyms. Tylistus Lee, Class. Col. 203, (1862.) Enneatoma 

 Muls. $'Rey, Col. Fr. Terediles, 367, (1863.) 



In this genus the body is broadly ovate, nearly globose ; the eyes are deeply 

 emarginate, and nearly divided by an impression. The antennae are 9-jointed ; 

 first joint long, auriculate, second small, rather broader than its length ; 3 6 

 very small, indistinct; seventh large, transverse triangular, very much pro- 

 duced inwards in the male ; eighth elongate, subtriangular, as long as the 

 transverse diameter of the preceding joint, ninth longer than the eighth, elon- 

 gate oval, somewhat curved, very small at point of attachment to preceding 

 joint. Palpi with the last joint triangular, truncate : head transversely vaguely 

 excavated beneath. Piosternum very short, concave, broadly truncate behind, 

 widely separating the anterior coxae; mesosternum entirely concealed under 

 metasternum, deeply concave. Metasternum large, not channelled ; produced 

 between the middle coxae, and widely truncate in front. First ventral segment 

 excavated for reception of hind feet. Feet slender, tibiae not compressed, tarsi 

 moderate. First joint longer than the two following united. Elytra with 

 three striae towards the sides, the two outer ones entire, the inner one extending 

 from the humerus to near the middle. 



The larvae live in species of Lycoperdon (puff balls,) and before being 

 transformed construct small, ellipsoidal cells, in which the subsequent changes 

 take place. The perfect insects are found on leaves, chiefly of oak. 



The two species in my collection are easily distinguished. 



Elytra coarsely punctured, pubescence hispid o c u 1 a ta. 



Elytra finely punctured, pubescence short, prostrate scymnoides. 



To this genus probably belongs Dorcatoma bi color Germ., Ins. Nov. 79, 

 which is unknown to me. The antennae, head, thorax and feet are red, the 

 rest of the body black. 



1. C. oculata. Dorcatoma oculata Say, Long's Exped. St. Peters., ii. 273, 

 ((-^); (ed. LeConte, i. 180 ;) Bore, simile Say, Bost. Journ. Nat. Hist., i. 166, 

 ( 9 ) ; (ed. LeConte, ii. 642 ;) Tylistus similis Lee, Class. Col. N. Amer., 204. 



Abuudant throughout the Atlantic States, from Lake Superior to Louisiana, 

 and from Maine to Kansas. The punctures of the elytra are coarse and distant, 

 and the pubescence rigid and snberect, some of the hairs directed longitudi- 

 nally, others obliquely outwards. In the female the seventh joint of the an- 

 tennae is almost regularly triangular, and but little produced inwards; the 

 eighth joint is less slender than in the male, and the last joint less arcuated. 

 These differences account for the two specific names given by Say. The striae 

 are deep, and the inner one extends from the base nearly to the middle. 



1865.] 



