161 



Number and sexes of types: Holotype $, Truckee, 17 Sept. 1913, (Miss 

 Ximena McGlashan, Collector), Paratype $, Sierra Nevada, No. 16715, Hy. 

 Edwards. 



Types in: Barnes Collection; Paratype, Museum of Natural History, New 

 York. 



GORTYNA COLUMBIA sp. IIOV. 



Antennae of male strongly serrate and fasciculate. Head, thorax, patagia, 

 tegulae and abdomen rufous-brown mixed with cream-yellow. Primaries : 

 ground color dull rufous-brown; basal line obscure, geminate, darker brown; 

 t. a. line obscure, geminate, brown, bent outward on median vein, thence 

 rounded and oblique inv.'ardly to inner margin; claviform ill defined; orbicu- 

 lar and rcniform poorly defined, almost lost in the ground color; t. p. line out- 

 wardly bordered v/ith pale, only slightly rounded out at costa, oblique inwardly 

 to vein 2, with a slight bend on submedian fold, but not more acutely oblique 

 inwardly to inner margin ; s. t. line pale, somewhat waved, nearly in a parallel 

 course to the t. p. line ; the s. t. space heavily dusted with grey scales ; terminal 

 line dark brown; fringes dark brown with a paler line at their bases. Sec- 

 ondaries: fuscous, somewhat paler basally, crossed by a dark median line; 

 fringes pale. Beneath: ochreous-brown. the secondaries paler toward their 

 bases and inner margins ; both sets of wings with more or less powdering of 

 scattered black scales, crossed by a common median dark shade line, and with 

 discal spots ; on the primaries the discal spot is suffused and appears to touch 

 the median shade ; there is also a dark subterminal shade present. 



Expanse: nearly 41 mm. 



This species bears some resemblance to mcdialis, but it is smaller, 

 narrower winged and the antennae are less heavily serrate, placing 

 the insect in Group III of Ilampson's Hydrcccia, (Cat. Lep. Phal. 

 B. M., IX), Its closest ally is G. intermedia from which it differs in 

 being narrower winged ; possessing a more oblique t. p. line, the course 

 of which is nearly continuous above and below vein 2 ; in having con- 

 spicuous gray powdering in the s. t. space ; and fuscous secondaries. 



Type localities and number and sexes of types: Holotype $, Saanich 

 Dist., B. C, 18 Sept. 1916 (W. Downes) ; Paratype $, Duncans, B. C, "3-9-07". 



Types in: Barnes Collection; Paratype, received from Mr. E. H. Black- 

 more for determination and returned to him. 



A superficial key, following as closely as possible the characters 

 used by Hampson, based on specimens in the Barnes Collection, may 

 help to separate the species. 



