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 antennae 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. cl3rpeatus 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 n^^- 

 °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. 



