No. 22.] HYMENOPTERA OF CONNECTICUT. 417 



and smooth, its first segment with a few scattered hairs on its 

 anterior half; legs semi-translucent red, posterior femora almost 

 ovate in the middle, claws dark. 



This species was found ovipositing in the buds of Quercus 

 ilicifolia early in the spring. The type locality is probably Water- 

 bury. 



A. fusiformis Osten Sacken. 



This species differs from petiolicola as follows : The two 

 lines between the parapsidal grooves are distinctly impressed and 

 very like furrows, but have less lustre and are therefore not as 

 perceptible as in the species above mentioned. In addition to 

 these lines there is a third intermediate impressed line that is 

 perceptible in certain lights, the scutel is less deeply wrinkled, 

 and the thoracic pubescence is more distinct than in the other 

 species. 



The gall of this species is elongated, fusifiorm, petiolate, and 

 mostly occurs on. the margin, though sometimes on the surface, 

 of the leaf of the white oak {Quercus alba). 



*A. exiguus Bassett. 

 Female: head black, antennae 13-jointed, joints three to ten, 

 in dry specimens shrunken and wrinkled; wings not clear, veins 

 distinct. Male: head black, antennae pale yellow, 14- jointed, 

 second joint globular, the third as long as the first and second 

 combined, and subclavate, the succeeding joints equal in length 

 and not quite as long as the third, except the apical joint, which 

 is minute, the tenth to thirteenth joints slightly dusky; thorax 

 shining yellow, parapsidal grooves distinct, scutel yellow, slightly 

 rugose, bounded posteriorly by a heavy ridge, its foveae round 

 and close together ; legs pale yellow ; wings subhyaline, veins pale 

 brown, areolet present but faint, radial area open, cubitus reach- 

 ing three-fourths of the distance to the first transverse vein. 



Type locality: West Rock, New Haven. Found among the 

 dry but still adherent aments of Quercus obtusiloba in June. 



*A. ashmeadi Bassett. 



Female : length 3.5 mm. ; thorax with distinct parapsidal 

 grooves that are even throughout, the intermediate parallel lines 

 not grooved and reaching only half-way to the scutel, a faint line 

 on the mesonotum near the base of each wing, thorax irregularly 



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