15 



side and two small spines above. Mid tibia spined. Hind tibia with a spine 

 between the spurs. 



Head, collar, thorax, primaries and their fringes concolorously white with 

 a cream tinge, slightly more so than parvipuncta, but relatively pure white when 

 contrasted with spauldingi. A small black dot, in submedian fold, takes the 

 place of a t. a. line ; a black dot at the end of the cell and another in the sub- 

 median fold take the place of a t. p. line. All of the black dots are very minute. 

 Secondaries : smoky, paler thru anal region, especially basally. Beneath : prima- 

 ries, smoky-fuscous, the costal, outer and inner margins paler; with the fringe 

 white. Secondaries : pale, with a very slight fuscous suffusion. A trace of a 

 fuscous spot present, beyond the cell. Fringe white. Sexes similar. 



Expanse: 23-24 mm. 



Genitalia: uncus with spoon-shaped tip, and an apparently apical spine. 

 Vinculum broadly rounded, the tip rather bluntly pointed. Tegumen rather 

 heavy. A spine patch on the penis, heavy, but comparatively very light for a 

 Grotella, composed of long heavy spines at the base, with some short spines 

 set on chitenous humps toward the caudal end ; intermingled with these "ordi- 

 nary" spines is a corona-like set of small heavy spines. The valves of this 

 species and vagans are quite unique in the genus. 



Type locality and sex of type: $ Holotype, Palm Springs, Riverside 

 Co., Calif., April 16-23. 



Grotella vagans, sp. nov. (fig. 8). 



Front essentially as in septempunctata. Fore tibia with an outer short claw 

 and two spines above, an inner heavy claw with two spines above, and an ad- 

 ditional spine at the tip. Mid tibia heavily spinulated. Hind tibia with a spine 

 between the spurs. 



Head, collar, thorax and primaries concolorously white, the white grayed 

 with a somewhat creamy tinge; not the satiny-chalk white of the septempunctata 

 group. Black dots on primaries obsolescent, apparently nearly as in parvipuncta. 

 Fringe white, darker at the base. Secondaries : somewhat variable, being rather 

 heavily suffused with fuscous on a white ground, in one specimen appearing 

 quite deep fuscous. Fringe white. Beneath : primaries blackish-fuscous ; sec- 

 ondaries pale, not white, somewhat darkened by fuscous. Fringe white. 



Expanse: about 23 mm. 



Genitalia: similar to stretchi; uncus with the tip considerably broadened 

 and spoon-shaped with a dorsal spine; vinculum with a definite point; penis 

 armed with fewer spines than typical in the genus; valves similar to stretchi, 

 but shorter and broader, the chitenous clasper-like projection extremely heavy 

 and somewhat longer. 



Type locality: Clark Co., Nev.; April 24-30. 



Number and sex of types: $ Holotype; 2 $ Paratypes. 



