248 bulletin: museum of comparative zoology. 



Pepsis. 



1. Antennae more or less reddish or yellowish , mildei. 



Antennae all black 2 



2. Wings reddish cinnabarina. 



Wings yellowish formosa. 



Pepsis Formosa (Say). 

 Calif.: San Emigdio Canon, Kern Co., cf 9 • 



Pepsis cinnabarina Lucas. 

 Calif.: Claremont, Los Angeles, Kern Co. 



Pepsis mildei Stal. 

 Calif. : Claremont, Pasadena, San Jose, San Luis Obispo. 



Ceratopales. 



1. Wings black nigripes. 



Wings hyaline 2 



2. First abdominal segment almost wholly yellow above stretchi. 



First abdominal segment black, with two transverse yellow spots, some- 

 times connected fraterna. 



Ceratopales nigripes (Cresson). 

 Recorded from Washington. 



Ceratopales fraterna (Smith). 



Oreg. : The Dalles, June, 1882; Calif.: Kern Lake, 27 July, Sonoma 

 Co. ; Wash. : Yakima River, July, 1882, Wenas Valley, July, 1882. 



Ceratopales stretchi (Fox). 

 Described from "California." 



