142 Lord Walsingham on 



to it. The ocelloid patch reminds one much of that of Semasia 

 ampJiorana, Wlsm., its ui)per half dull greyish fuscous, with three 

 narrow longitudinal lines of black scales, having the appearance of 

 rows of stitches, the lower half pale ochreous, margined at the 

 sides and divided into two equal halves by three short bars of 

 brassy metallic scales, each half containing six black spots. CiUa 

 tawny. Abdomen and hind wings dull bi'ownish fuscous, with pale 

 straw-white fringes beyond the abdominal angle. On the under 

 side all the wings are dull fuscous, except the pale costal and apical 

 margins of the fore wings and fringes of the hmd wings. Expanse, 

 19 mm. 



Two females. Montana. 



This species must be nearly allied to Semasia taleana, 

 Grote, but his description does not agree with my speci- 

 mens, the scales of which are certainly not blackish with 

 white tips, nor is there a black patch below the median 

 fold. 



Semasia ? vestaliana, Zell. 



This specimen differs from Zeller's type in the costal 

 streaks being reduced to five small dots not actually 

 touching the costal margin. Moreover, in the line along 

 the apical margin being somewhat broken, not con- 

 tinuous as in Zeller's figure (Verb. z.-b. Ges. Wien, 1875, 

 p. 80, pi. viii., fig. 21). A male in my own collection, 

 taken in the cemetery at Denver, in Colorado, is more 

 like Zeller's figure, but has a distinct fuscous shade 

 along the inner edge of the marginal line. The male 

 has no costal fold. 



Following Heinemann's system of classification Prof. 

 Fernald would be justified in placing this species in the 

 genus Semasia, H.-S., rather than in Grapholitha, H.-S., 

 the middle branch of the hind wings being decidedly 

 bent towards its origin, and brought to the same point 

 as the stem from which branches 3 and 4 arise, but in 

 its small palpi and in the somewhat falcate apex of the 

 fore wings it seems to approach the genus Phoxopteris, 

 Treits. 



One male. Montana. 



Semasia argenticostana, Wlsm. 

 One male. Arizona. 



