98 Journal New York Entomological Society, [Vol. xxyiii. 



Genus Platypedia Uhler. 

 A. Fore wings more than twice as long as broad. 



B. Large, expanding 40 millimeters or over; uncus when viewed from 

 above long and narrow. 

 C. Head narrow across eyes with front strongly produced. 



D. Uncus viewed in profile very thin and flattened at the extremity. 

 Body black, head and thorax dull, abdomen shining, reflec- 

 tions bluish black; fore femora entirely black, pale at ex- 

 tremities ; membranes at base of fore wings orange. Ex- 

 pands about 44 millimeters. Occurs in Arizona, Colorado, 



New Mexico mohavensis new species. 



DD. Uncus viewed in profile slightly arched above, sinuate beneath, 

 extremity not flattened as in mohavensis. 

 Body blue black, particularly the head and thorax; fore 

 femora chestnut colored above, paler at extremities ; mem- 

 branes at base of fore wings bright orange. Expends about 

 40 millimeters. Occurs in California. . .rufipes new species. 

 CC. Head broader across the eyes with front not as strongly produced. 

 Uncus viewed in profile arched at top, the arch extending to 

 the extremity, which is thickened ; uncus also deepened near 

 the base in typical putnanii and areolata. 

 E. Body black with bluish reflections especially on the pronotum 

 and mesonotum. Fore femora in mature individuals en- 

 tirely black, pale at extremities, except in variety occiden- 

 talis of piitnami which has chestnut colored fore femora. 

 Vein separating radial cell from ulnar cells black through- 

 out its length in mature individuals. 

 Costal margin of fore wings to end of radial cell brilliant 

 orange ; membranes at base of fore wings bright orange or 

 blood red. Uncus viewed in profile with distal two thirds 

 of lower line not straight, but curved so that the extremity 

 sometimes appears bent downward. Expands about 50 milli- 

 meters. Occurs in Colorado, Nebraska, New Mexico, Ne- 

 vada, California putnami (Uhler). 



Body blue-black and marked as in typical putnami except the 

 legs which are pale, the fore femora not blackened above, 

 and the other legs also almost wholly chestnut colored. 

 Occurs in western California. 



putnami var. occidentalis new variety. 

 Body blue black but duller than in putnami. Costal margin 

 of fore wings to end of radial cell, and membranes at base 

 of fore wings orange. Expands about 53 millimeters. Oc- 

 curs in Utah, Montana, Arizona, Wyoming. 



putnami var. lutea new variety. 



