new species of North American Tortricidse. 511 



being at its palest immediately around the outer margins of these 

 markings ; a few darker almost fuscous scales are sprinkled about 

 the costal fold and apical streak and along the base of the cilia, 

 which are fawn-brown tipped and sprinkled with white. Exp. al., 

 26mm. Hindwings pale fawn-brown; cilia somewhat lighter, with 

 a slight dividing shade near their base and some faint whitish 

 speckling. On the underside the hindwings are more decidedly 

 lighter than the forewings. Abdomen and Hindlegs pale fawn. 



Type. 3. Mus.Wlsm. 

 Hob. Arizona (Morrison). 



This species differs from Ptedisca dorsisignatana, Clem., 

 in its wider forewings, in the more outward position of 

 the dorsal blotch and in the obliquely margined basal 

 patch, although in general appearance it somewhat recalls 

 a large specimen of that species. 



I should like to add here that I cannot agree with 

 Dr. Fernald in regarding Psedisca yraduatana as a 

 variety of dorsisignatana, the hindwings are more 

 reddish-brown and the dorsal patch is much squarer 

 and more upright than in that species of which I have a 

 very long series presenting almost every possible grade 

 of variation from the pale buff-coloured Californian 

 specimens to the dark greyish fuscous varieties from 

 N. Carolina. 



. Psedisca castaneana, sp. n. (PL XII., fig. 6.) 



Antennae, pale cinereous, distinctly banded above with fuscous. 

 Palpi (broken). Head chestnut brown ; face white. Thorax 

 chestnut brown, whitish posteriorly. Forewings shining white 

 and bright chestnut brown in about equal proportions, the former 

 occupying the central portion of the wing, the latter forming a 

 strong basal patch with convex outer edge, broader on the dorsal 

 than on the costal margin, a median costal blotch dilated and diffused 

 outward and downward and overspreading the white ground-colour, 

 with a slight chestnut tinge, to the anal angle, also forming two 

 small costal spots beyond it, and covering the whole apical portion 

 of the wing, except a reduplicated white costal streak before the 

 apex ; the bright chestnut apical patch throws out a strong 

 projection on its inner edge above the middle ; cilia rosy grey, 

 with some blackish scales along their base below the middle of the 

 apical margin. Exp. al., 15 mm. Hindwings shining pale grey, 



