AMERICAN HYMENOPTERA. 241 



ante-apical series of pits deep, confluent. The cross striae in the 

 mesopleural pits are wanting in the specimen from Massachusetts, 

 which may be a distinct species. 



CSirysis Striatelliis n. sp. — % 5. — Color greenish-violaceous, with more 

 of green upon the head, sides of thorax, and apex of each segnnent of abdomen ; 

 most part of tergum violet-blue; the three basal joints of antennae and first 

 tarsal joint green; wings very faintly clouded, nervures of the discoidal cell 

 quite indistinct, marginal cell complete, its lower vein bent, not distinctly 

 angulate; basin of face with cross striae, its sides with white hair, most 

 abundant in the males; a carina, quite removed from the ocelli, across its 

 upper margin, not touching the eyes ; clypeus with a widely angulate depression 

 in the middle; mandibles with an incision near the middle; head and thorax 

 closely covered with nearly equal punctures; a smooth area in the front of 

 scutellum, its surface not polished; a large punctured depression in front of 

 postscutel, and the deep central hollow of basin of first segment, all punctured ; 

 surface of tergum not polished, coriaceous, covered with separated, moderate, 

 deep punctures; ante-apical space of third segment deep, its series of pits 

 longer than wide, subobsolete, the apical margin rounded, without angulate 

 corners, with a wide shallow depression in the middle, at times; mesopleura 

 with well defined, subearinate edges. Length .23 inch. 



Hab.— Mass., Pa., Del., Ya., 111., (Coll. Am. Ent. Soc.) 



Sec. II. — Margin of third ahdominal segment sinuate, its middle 

 notched. 



Notch moderate, its inner angles distinct, the margin sinuate with no npparent 

 angles at corners; basin of face with cross striae perpulclira. 



Notch rather deep, the margin sinuate, with a distinct angle on each corner; 

 basin of face punctured (leiisa. 



Chrysis perpulclira Cresson, Proc. Ent. Soc. Phil, iv, IS65, 308, % 9. 



JIab.— Can., Del., Col., (Coll. Am. Ent. Soc.) 



Specimens differ much in color and in the form of margin of third 

 segment. All have a cross carina above the basin of face (but sepa- 

 rated from it by a punctured space), from each side of which springs 

 a carina enclosing the lower ocellus. The ante-apical foveolae are longer 

 than wide, deep and distinct. The mesopleura below the middle is 

 narrow, bent and produced to an acute angle, with well defined side 

 ridges. Length .37 inch. 



Chrysis densa Cresson, Proc. Ent. Soc. Phil, iv, 1865, 307, 9 . 



Hah. — Colorado, (Coll. Am. Ent. Soc.) 



The sides of the third abdominal segment beyond the angular 

 corner are straight; the ante-apical space is shallow, the foveola open 

 beneath ; mesopleura as above, the series of pits crossing the middle 

 numerous and very deep. Length .40 inch. 



TRANS. AMER. ENT. SOC. VII. (31) MAY, 1879. 



