MEMOIRS OP THE NATIONAL ACADEMY OF SCIENCES. 97 



A decidedly lutcous subtriangular spot extends from the base of the wiiji;- to the inner distinct 

 line crossing the wing, which line is situated Iialf way between the base of the wing and the inner 

 side of the median band, this line having been rubbed oft' in the type of wrightii. The space 

 between this line and the median band is whitish gray. The broad blackish median band incloses 

 a sinuous linear hiteous discal spot, and there is a Inteous patch near the internal edge of the 

 wing. The inner edge of the median band is less distinctly sinuous than in the tj'pe of >rri(jhtii, 

 and so is the white outer bordering Hue, which, however, is more zigzag. The edge of the wing 

 is stone-gray, as in tlie type of wrifjlifii, and incloses the usual scalloped dark line, as in the type 

 of icriyhiii. Hind wings as in the type; a difthse dark band crosses the wing beyond the middle, 

 and a second outer one is parallel to it, but does not reach the middle, and the two bands inclose 

 a white linear spot, as in the type. 



The species occurs in northern as well as southern California, and is quite variable. 



G. severa Edwards. — The single type is a 9 from Soda Springs, Cal. 



The type is much larger than the Sierra Nevada specimen, and well preserved. Antennie 

 with short pectinations. Body and head dark gray. Wings unusually dark; fore wings dark 

 gray on the basal third, with a very small luteous spot on the cubital and internal veins. Mediaii 

 baud broad and dark, almost black, and not bordered by the narrow scalloped outer line, the 

 wing being suffused with black to the outer edge. A narrow faint luteous linear discal spot. 

 Halfway between the scalloped pale gray line and the outer edge of the wing is a submarginal 

 series of tawny or luteous jjatches. Hind wings just as in the Sierra Nevada example, and 

 venation as in wrightii. Wings underneath dark and much diflused, the line on the fore wing 

 less sinuous than in the trriyhtil type. Ilind wings with two i)arallel broad dark bands, just as in 

 the Sierra Nevada specimen of G. wrightii. The shape of the head and the; wings is the same in 

 the Californian severa and the eastern form. In both forms the hind wings are nearly the same. 



Var. Hrimacula. — The following is a descrii)tion of a type specimen presented by IMr. Hudson to 

 the United States National Museum: Body and fore wings ash-gray, basal line black, with a large 

 irregular loop just below the median vein tilled in with luteous scales. Middle line black, sinuous; 

 extradiscal line diffuse, oblique, and sinuous; no luteous median band, this space being ash-gray, 

 with obscure luteous scales near and on inner edge; au indistinct submarginal series of blackish 

 scallops; a very distinct, irregular, reniform black discal spot, tilled in with distinct luteous scales, 

 so that there are two distinct conspicuous clay-yellow spots in this species; hind wings with no 

 distinct line and no common line beneath. Expanse of wings, 37 mm.; length of body, 10 mm. 



Plattsburg, N. Y., May 10, 15, 21, 2'2 (O. H. Hudson). Professor French has (hoibi/i from 

 Victoria and .severa from Shasta County, Cal. 



G. severa var. slossuniw. — Body and wings pale ash-gray ; the prothoracic segment colored as the 

 bead, but the rest of the thorax is dark brown, the median thoracic tuft also dark l)rown. Fore 

 ■\vings black-brown on basal one-tittli, this portion sending out five sharp tooth-like projections 

 along the subcostal, internal, and second anal veins. A broad distinct median oblique band, with 

 irregular loliulate edges, and widening on the costa; it incloses a very distinct discal triangular 

 white spot, the apex pointing outward. A submarginal broken row of dark spots arranged much 

 as in Gluphisia trilineata. 



Hind wings with no markings, but at the inner angle is a faint short curved dark band, 

 edgeil externally with white, but not reaching beyond the middle of the internal space. Fringe 

 coucolorons with the wing, but checkered with small black spots. 



Wings beneath much as in Gluphisia trilineata; the black band is faint, its outer edge indicated 

 •on the costa by a dark spot. Expanse of wings, 38 mm.; length of body, 15 nnn. 



I am indebted to Mrs. Annie Trumbull Slosson for the privilege of examining and describing 

 a single remarkable specimen in a perfect state of i)i'cservation taken at Franconia, N. H. Mrs. 

 Slosson, unlike many entomologists, has kindly allowed me to partially denude the under 

 side of the wings of her unique specimen, so that the venation could be carefully drawn with the 

 aid of the camera. She has determined the species to be new. The species was not to be found in 

 the collections of Mr. Graef or Mr. Nenmogen, and Mr. Beutenmiiller had not seen it in the Henry 

 Edwards collections, now fortunately in the possession of the American Museum of Natural 

 History at Central Park, New York. 1 had described the form as Ceruridia slossonia; regarding 

 S. Mis. 50 7 



