Vol. XXXlJ ENTOMOLOGICAL NK\\ - II 



caroliniana); on June 12 from ironwood (Oslrya virginiana); on June 9, 

 from red oak (Quercus rubra); on June 17, from hickory. 



Agrilus subcinctus Gory. Mr. H. A. Wenzel informs me that he 

 takes this species on the foliage of poison ivy (Rhus toxicodcndron), and 

 the numbers taken indicate that poison ivy is the host-plant. 



Agrilus lecontei Saund. Breeds in the wood of dead hackberry 

 (Celtis occidentalis) in the vicinity of Harrisburg, Pa. 



Agrilus egenus Gory. Breeds in the wood of dead black locust 

 (Robinia pseudacacia) in the vicinity of Harrisburg, Pa. 

 Agrilus celti n. sp. 



Form and color of A. egenus, males often more greenish. Antennae 

 greenish, reaching the middle of the prothorax, serrate from the fifth 

 joint, serrate joints longer than wide; head convex, with faint median 

 impression, front densely punctate, becoming strigose on occiput, middle 

 of front to clypeus covered with long white pubescence. 



Prothorax wider than long, sides not strongly arcuate, hind angles 

 rectangular, with a well-defined carina in both sexes; disk convex, median 

 impressions light, lateral depressions well-marked, surface transversely 

 strigose. Scutellum transversely carinate, surface granulate. Elytra 

 sinuate behind the humeri, dilate behind the middle, apices separately 

 round'ed and serrulate, basal depressions slight; disk depressed, surface 

 imbricate-granulate. Body beneath more shining than above, prosternal 

 lobe strongly emarginate. Pygidium without a projecting carina. First 

 joint of hind tarsus as long as the following three joints; tarsal claws 

 broadly toothed at base, claws similar on all three pairs of feet in both 

 sexes. Length 4.5 mm.; width i mm. 



cf. Front more densely pubescent, greenish; prosternum densely 

 pubescent, with pubescence extending on the second abdominal segment, 

 first and second abdominal segments broadly but not deeply channelled ; 

 sides of genitalia nearly parallel. 



9. Front less densely pubescent and less bright, without the stripe 

 of dense white pubescence on under side, first and second abdominal 

 segments without channel. 



Described from a large series of adults reared from dead 

 branches of hackberry (Celtis occidental is), collected at Hum- 

 melstoun, Pa., by Mr. H. B. Kirk and the author. 



Type male and allot ype in author's collection and reared 

 June 3, from dead hackberry (Celtis occidentalis) branche> 

 collected at Hummelstown, Pa., by the author. 



This species has been confused \\itl> .-1 . chains in collections, 

 and although it is hard to separate the female's from tho>e 

 of A . egenus, the males may be easily separated by an examina- 

 tion of the genitalia. 



