226 PROCEEDINGS OF THE ACADEMY OP 



explanatis, scutello tomentoso, elytris thorace paulo latioribus, dense punc- 

 tulatis ; oculis (^) maximis, antennis articulis 911 linearibus, singulo prse- 

 eedentibus conjunctis longiore. Long. -18. 



York Co., Pennsylvania; one male, given me by Dr. Melsheimer. Easily 

 recognized by the characters given above. The second and fifth joints of the 

 antennseare equal, and a little longer than their width, the sixth to the eighth 

 joints are shorter, transverse and closely connected ; the ninth is not wider 

 than the others, linear and very elongate, being longer than all the preceding 

 united ; the tenth and eleventh are each equal to the ninth. The prosternum 

 in front of the coxae is less abbreviated than in the species 1 4 ; the last joint 

 of the tarsi is longer than usual. The form is less elongated than in E. 

 in a r g i n i c o 1 1 i s. 



I have single individuals, indicating two other species, which seem closely 

 allied to what I have considered as E. mollis, but I am unwilling to de- 

 scribe them, until the discovery of other specimens will enable the specific 

 characters to be defined with greater precision. 



OZOGNATHUS Lee, Class. Col. N. Am., 205, (1862.) 



In this genus the anterior coxa? are narrowly separated by the prosternum, 

 which, infront of the coxa?, is longer than usual ; the coxae themselves are 

 oval, and not very prominent; the middle coxa? are well separated by the 

 mesosternum, which is flat, declivous and obtusely triangular. The metas- 

 ternum is deeply channelled behind; the hind coxa? are very narrow extern- 

 ally, and moderately dilated internally, with the hind margin obtusely angu- 

 lated ; the sixth ventral segment is visible. The tarsi are narrow, with the 

 last joint elongated. 



The antenna? are alike in both sexes, less than half the length of the body, 

 the joints 3 8 nearly equal in size but with the fifth and seventh some- 

 what stouter, not longer than their width; the ninth is as long as the 

 three preceding united, and double their width ; the tenth is about equal in 

 size to the ninth, and the eleventh a little longer; united they are about 

 equal in length to all the preceding joints together. The eyes are small, con- 

 vex and prominent. 



The male differs from the female, by each mandible being armed at its base 

 by a slender cylindrical horn, as long as the head, which rises perpendicularly, 

 and is inflexed and acute at the tip, meeting the horn of the opposite side. 



1. 0. cornutus Lee, Class. Col. N. Am., 206 ; Anobiurn corn. Lee, Proc. 



Acad., 1859, 87. 



California. Sent me by Mr. Andrew Murray, as having been hatched from 

 some galls received by him from California. 



1. 0. mise.llus, niger, nitidus, tenuiter pubescens, capite thoraceque 

 punctulatis, hoc convexo, latitudine duplo breviore, lateribus late rotundatis, 

 elytris parce punctulatis, antennis basi, tibiis tarsisque piceo-testaceis. Long. 



05 



One female found by me at, San D^ego, California. Differs by its very much 

 smaller size, less dense punctures, and by the hind angles of the thorax not 

 being acutely prominent. 



XESTOBIU.M Molsch. 



Bull Mosc, 1845, i. 35. Muls. and Rey., Col. de France, Terediles, 119. 

 Synonym. C n e c u s Thorns., Skand. Col., i. 88, (1859 ;) v. 145, (1863.) 

 As in the preceding genus, the anterior coxae are oval, not prominent, and 

 separated by the prosternum, which, however, is very short in front of the 

 coxae. The middle coxae are well separated by the mesosternum, which is 

 obtusely triangular. The metasternum is somewhat channelled behind ; the 

 plates of the hind coxa? are widely separated and suddenly dilated internally, 



[Oct. 



