NO. 22.] HYMENOPTERA OF CONNECTICUT. 575 



S. melliventris Ashmead. 



Head and thorax black. Abdomen yellow, the petiole and the 

 tip black. Legs yellow, hind tibial spur one-third the length 

 of the metatarsus. Length 4-5 mm. (male). 



New Haven, 31 October, 1903 (H. L. V.). 



S. californicus Holmgren. 



Black. Legs, except coxae, and antennas beneath reddish. 

 Antennae with first to fifth joints of flagellum dentate beneath. 

 Length 4-4.5 mm. (male). 



New Haven, 31 October, 1903 (H. L. V.). 



S. flavipes Provancher. 



Black. Mandibles, tegulae, and legs, including coxae, pale 

 yellow. Marginal cell as long as the stigma. Posterior tibial 

 spur two-thirds the length of the metatarsus. Length 3.5-4.5 mm. 



S. clypeatus Ashmead. 



Black. Clypeus and mandibles rufous. Legs, including coxae, 

 yellowish. Cauda longer than the abdomen, reddish basally. 

 Tibial spur of posterior leg one-half the length of the metatarsus. 

 Length 4.5 mm. 



S. abruptus Say. 



Black. Legs reddish yellow, coxae often in part black. Cauda 

 only one-fourth the length of the abdomen. Length 2.5-3 mm - 

 S. obsoletus Say. 

 Larger than abruptus and with the antennae almost wholly 

 yellow. Length 4 mm. 



Parasitic on Stelidota strigosa. 



S. carolinensis Ashmead. 



Black. Antennal scape, tegulae, and legs yellow ; coxae dusky 

 at base. Metathorax with a single carina extending to the tip. 

 Posterior tibial spur half the length of the metatarsus. Length 

 5-5.5 mm. 



Putnam, 12 July, 1905 (H. L. V.). 



S. longiceps Ashmead. 



Black. Antennae, except tips, yellowish. Legs reddish yellow, 

 the coxae dusky. Metathorax weakly rugulose, with a median 

 carina. Cauda as long as the metatarsus. Spur of posterior 

 tibiae one-third as long. Length 7 mm. 



