INVESTIGATIONS ON THE MUTILLID WASPS 303 



Plesiotype. — Male, Orange County, California, collection of Uni- 

 versity of Minnesota. 

 Distribution. — California and Oregon, 



SPECIMENS EXAMINED 



Califobnia: Male, La JoUa, San Diego County, August 26, 1917 (H. Klotz) ; 

 male, Laguna Beacb, July 8, 1916; male. Orange County; female, Saugus, 

 Los Angeles County, August 18, 1917; male, Santa Paula (Essig) ; male, 

 Sonoma County, July, 1908. 



Oregon: Male, Corvallis, August 27, 1925 (D. A. Wilbur). 



This species resembles coccineoMrta and abcUta to such an extent 

 that it is only distinguished by a close examination. It may be sepa- 

 rated from both by the absence of a medial emargination on the 

 anterior margin of the prothorax and by the depressed character of 

 the second sternite. The genitalia of testaceiventris are also very 

 different from the above-mentioned species. The venter of all the 

 specimens at hand is darker than that described by Fox, and the 

 ground color of the tergites of the abdomen is very dark red in some 

 specimens. The length of the specimens examined varies from 6 to 

 12 mm. The pubescence of all the specimens is black and scarlet. 

 There may, however, be a variation in color from scarlet to yellow 

 in nature, similar to the variation found in coccineolm^ta^ abdita, and 

 other species, but there is no evidence of such a variation in the speci- 

 mens available for examination. 



