June, 1903.] DyAR : REVIEW OF PRONaiHA AND PrODOXUS. 103 



'^ Pronuha macttlata, var. ateniina, n. var. Characters of the species, but the 

 chitinized parts smoky brown, and the scales of a dead black color throughout or a 

 few pale ones near the tips of the primaries. Living as a larva in the forming seeds 

 •of Hesperoyucca whipplei var. graniinifolia, the flowers of which are pollinated by the 

 female imago. In the foothills immediately north of San Bernardino, Cal." 



Pronuba paradoxa Riley. 



'I'his was mentioned by Riley as paradoxa (1S89) but described 

 by him later as sytithetica (1892). There is no description accom- 

 panying the first name, yet enough is given to determine the species, 

 since there can hardly be a doubt of the identity of the species of 

 Pronuba which fertilizes Yucca h-evifoUa in the Mojave desert, and 

 these points are mentioned. The first name will hold therefore. 



Genus Prodoxus Riley. 



Synopsis of Species. 

 Wings with ground color white. 



Fore wing white, rarely with a few black dots. 



Medium-sized species, hind wings gray with white fringe. ,^ 



Smaller, expanse 15-22 mm quinquepunctellus. f \\^^^ ^ 



Larger, 25 mm intermedius. "^^' i 



Small species, hind wings white with gray costal border sordidus. ^ 



Fore wing with conspicuous dark markings, rarely obsolescent. 

 Wings without transverse median bands. 



A marginal black border before fringe marginatus. -f- 



Outerhalfof wing powdered with black pulveruletltus. -f- 



Wings with transverse median bands. 



Bands forming two V-shaped marks on costa reticulatus. < 



Bands forming one ^'-shaped mark on costa. 

 Markings distinct. 



The two basal bands separate COloradensis. -^ 



These bands joined, forming a Y-shaped mark on intcrnnl 



margin var. confluens. ~-^ 



Markings faint, obsolescent var. lautus. -f- 



Bands not forming a Y-shaped mark on costa. 



A V-shaped mark resting on anal angle y=inversa. ^ 



Wings gray or brown. 



Fore wing shining gray, rather light ; bind wing blackish cinereus. " 



Fore wing dark gray; hind wing pellucid senescetlS. 



The above synopsis will serve to distinguish the forms. P. intcr- 

 Tucdius seems rather poorly separated from (juinqucpunctcllus, the onl}- 

 obvious difference being the size ; but Dr. Riley figures apparently 

 marked differences in the shape of the ovipositor. The other species 



