Genitalic Key to the Nefascia Group 

 I. — Sacculus large and lobate ; arm of valve slender^ so that 

 when spread out the arm appears as a mere crook from 



beneath the sacculus nefascia 



II. — Not so, — 



A. — Valves short, without much curve, and with a tend- 

 ency to be pointed ; sjDine of penis on a heavy chiten- 



ous hump duanca 



B. — Not so, — spine of penis not on a chitenous hump, 

 a. — Penis showing a decided, peculiar ribbing; comb 



(of jienis) small, spine large and long forbesi 



b. — Penis not showing the pecular ribbing; comb 

 modified into a huge plate with "teeth" at the 

 end and with a decided tendency to be project- 

 ing from the aedoeagus; spine missing barnesi 



LAMPRA BARNESI, sp. nov. 

 LAMPRA BARNESI, n. sp. 



Ground color variable. Head, color, thorax and ground color of 

 primaries usually concolorous; the head and collar rarely lighter. An- 

 tennae simple, ciliated, with longer setae to the segments; but so heavily 

 scaled at the base that the setae are obscured. In this it differs from 

 alternata, anchoceliodies, cupida, and nefascia. Palpi black at the sides, 

 paler at the tijDS. Orbicular always round and small; usually filled with 

 ground color, but in general clearl_y outlined by pale line. Reniform mod- 

 erate, constricted in the center ;usually dark at the toj) and base, with 

 the median area concolorous with the ground. Ordinary lines double 

 and darker than the ground whereas the space between them is usually 

 lighter. S.t. similar to cupidn, and with no trace of the W-mark. In 

 the male the s.t. area is darker; while the terminal area is lighter, than 

 the ground and often with a blueisli tinge: usually dark and resembling 

 a large nefascia. Some females closely resembling the males; others 

 varying through shades of tan, reddish and clay; often resembling alternata. 

 Secondaries dark fuscous to black, lighter at the bases. Fringe white 

 at the tips; ocherous at the base; the two areas separated by a clear 

 brown line. 



In short, a very variable species in color and maculation, especially in 

 the females. Genitalically it is quite distinct and fairly constant, from 

 all localities. The feature distinguishing it from all other species of the 

 genus is that on the tip of the visica of the penis is a large chitenous 

 plate spined mainly at the end, and normally jyrotruding from the 

 oedoeagus. 



It appears to be a common species and widely distributed over the 

 southwestern United States. The types are all from Arizona, but other 

 specimens of apparently the same species are from California and Utah. 



Type Locality: Holotype $, White Mountains, Ariz; allotype, Palm- 

 erlee, Ariz; Paratypes from, White Mountains, Redington, Palmerlee, 

 Phoenix, Paradise, Mohave Co., Yavapai Co., Huachua Mountains, Tucson, 

 Senator and Prescott, Arizona. 



Numbers and Sexes of Types: Holotype $ ; Allotype § ; 37 ^ , 49 $ 

 Paratypes. 



Types in: Barnes Collection. 



Specimens Examined: See text. 



Genitai.ic Slikes: Holotype and 6 Paratypes, as follows: 2, Para- 

 dise; 1, Yavapai Co.; 1, Redington; and 1, Palmerlee, Arizona. Other 

 slides from: 2, Provo, Utah; 1, Vineyard, Utah; and 1, transitional to 

 form nevadensis, from Mission San Jose, California. 



97 



