No. 22.] HYMENOPTERA OF CONNECTICUT. 3I 



of the anterior and middle femora, trochanters, and four apical 

 segments of the posterior tarsi ; head roughened with large, closely 

 placed punctures; a'bdomen iridescent with fine transverse wavy 

 striations. Length 13 mm. Larva resembling a bird's dropping, 

 feeds on the young leaves of hickory and butternut. 



Megaxyela Ash mead. 



°M. major (Cresson). Xyela major Cresson. 



Body ferruginous, with black and yellow markings; pos- 

 terior tibiae broadly expanded and flattened, covered with setse 

 which form a brush along the ventral side. Length 10 mm. 

 Larva feeds on hickory. 



Paraxyela MacGillivray. 



°P. tricolor (Norton). Xyela tricolor Norton. 



Body steel blue, with the following parts white: spots at 

 the insertion of the antennae, nasus, labrum, mandibles, palpi, and 

 edges of the ventral segments ; the following parts black : edge 

 of labrum, tips of posterior femora, tibise, and tarsi ; legs rufous. 

 Length 8 mm. 



Protoxyela MacGillivray. 



°P. aenea (Norton). Howard, Insect Book, pi. xiii, Fig. 5. 



Body bronze-black with the following parts rufous; first 

 segment of antennae, supraclypeal area, clypeus, labrum, man- 

 dibles, legs including the coxse, venter at apex, and apical two- 

 thirds of saw-guides ; abdominal segments beyond the basal plates 

 with a fine apical white margin. Length 7 mm. 



Macroxyela Kirby. 

 Key to Species. 



1. Head with a flat depressed area in front of median ocellus, 



never crossed by the median fovea 2 



Head, if with a depressed area in front of median ocellus, 

 always broken by the median fovea, which extends to the 

 median ocellus 4 



2. Median fovea represented by a linear smooth spot only 



slightly, if at all, depressed below the surface of the front; 

 body black, with clypeus, labrum, malar space, supraclypeal 

 area, basal plates at sides, abdomen beyond the basal 

 plates, and legs rufous. Length 8 mm bicolor 



