100 



TouRXAL New York Entomological Society, l^'ol. xxx'iii. 



V-shaped. Membranes at base of fore wings almost white. Fore wings 

 proportionately broader than in vanduseei. Expands about 41 milli- 

 meters. Occurs in California, Nevada, Colorado minor Uhler. p 1 ' ) 



Uncus when viewed from above narrow ; when seen in profile somewhat ' 

 resembling in shape that of pntnanii. Last ventral segment in female 

 with notch U-shaped. Costal margin of fore wing slightly bent near the 

 end of the radial cell. Membranes at base of fore wings red. Expands 

 about 38 millimeters. Occurs in California barbata new species, b. »i' 



Platypedia mohavensis new species. Plate V, fig. i. 



Type male and allotype female, from Trumble Mountain, Mohave Co., 

 Arizona, 1919 (J. A. Crosby). Davis collection. 



Resembles Platypedia putnami, but is much slimmer, has a narrower head, 

 and very protruding front. The uncus in putnami is large and has a dorsal 

 ridge extending to the thick rounded point ; in mohavensis it is much smaller, 

 the dorsal ridge is low or almost absent, and does not extend to the thin and 

 flattened rounded extremity. Last ventral segment of the male narrow and 

 rounded at apex ; valve not as long as in putnami, but of the same general 

 shape. Last ventral segment in the female with the notch narrower than in 



Platypeiia mohavensis 



putnami, which results in the extremities on each side of the notch being 

 much more broadly rounded. 



The body is dull blue-black covered in greater part with white hairs, which 

 are particularly long behind the eyes, about the mesonotal X, and especially 

 so beneath. The following markings are orange : supra-antennal plates in 

 part, a small dot at the base of the vertex continued as a median line on the 

 pronotum, which, however, does not reach the orange colored hind margin or 

 collar; hind margin of the mesonotum including only part of the mesonotal X, 

 and hind margin of the metanotum. Membrane at base of fore wings orange, 

 also the costal margin to end of radial cell, remainder of venation black or 

 nearly so. Veins of the hind wings pale except about the apical cells. The 



