No. 22.] HYMENOPTERA OF CONNECTICUT. I57 



not reaching the occiput; clypeus truncate; saw-guides with 

 dorsal and ventral margins converging, the apex bluntly- 

 pointed. Male differs in having rufous part of thorax inclined 

 to whitish and extending over entire pleurae, venter of abdo- 

 men, and a broad band on lateral part of dorsal aspect, broader 

 behind, sometimes fused on meson, whitish. Length 3 to 4 

 mm. Larva mines leaves of Crat&gus and Prunus. 



Messa Leach. 

 M. ambigua (Norton). Fenusa ambigua Norton. 

 Black, with the two basal segments of the antennae, the pro- 

 thorax entirely, the tegulae, the legs entirely, the abdomen for 

 the most part (sometimes infuscated at apex), white; antennae 

 with the second segment elongate, the first and second 

 together subequal to the third in length, the third longer than 

 the fourth ; wings hyaline, hairy, the veins and stigma brown- 

 ish ; saw-guides straight above, rounded below and at apex to 

 a point above. Length 3.5 mm. 



Kaliofenusa MacGillivray. 

 K. ulmi (Sundewall). Kaliosysphinga ulmi Sundewall. 

 Black, except legs beyond the knees, which are brownish ; 

 hypoclypeal area convex, abrupt in front ; clypeal furrow prom- 

 inent, not interrupted by the clypeal area ; front elevated, with 

 a broad, shallow median fovea, as broad as the area between 

 the antennae; antennal furrows extending from the tentorial 

 invaginations almost to the occiput, deep and narrow as far as 

 the anterior ocellus, separated from the occiput by a narrow 

 wall; wings almost hyaline, infuscated along the veins. 

 Length 3.5 mm. Larva mines leaves of the European and 

 American elms. 



Fenusa Leach. 

 F. dohrnii (Tischbein). Kaliosysphinga dohrnii Tischbein. 

 Black, except legs beyond the knees, which are fuscous ; 

 bead without a distinct furrow between the ocellar and posto- 

 cellar areas; antennal furrow not expanded into a large pit 

 opposite the middle of the front, and with two distinct tooth- 

 like indentations on the median side; saw-guides with the 



