222 REVISION OF MAMESTRA SMITH. 



and pale fringes. Beneath, reddish, powdery, primaries smoky on disc, 

 with an evident outer line and discal spot on all wings. 



Expands 37'"'" (1.50 inches). 



Habitat. — New Hampshire, Maine, Sierra Nevada, California. 



Three specimens a'^e in the Museum collection : Maine (J. B. S.) ; 

 Nevada County, California, red number 341 (through C. V. R.). Mr, 

 Edwards has the species from Sierra Nevada. 



Long ago Mr. Thaxter gave me a specimen of this species named 

 dimmoclci., the determination, as I understood, by Mr. Grote. I have 

 so named it in the collection of the U. S. National Museum, in Mr. Ed- 

 wards's collection, and perhaps in others. In comparing specimens with 

 the original description I find that it does not agree at all. Dimmocki 

 is compared with siihjuncta, and it is expressly stated that the s. t. line 

 is straight and that there is no W mark. 



Tlie present species is allied to aflantica in appearance, but is much 

 more even in color, the black basal dash being the only decided mark- 

 ing:- 



In the sexual characters of the male the species is unique. The 

 harpes are broad, somewhat curved, the tip superiorly prolonged in a 

 finger-like process. The clasper is a broad, flat process, rounded at tip 

 from the middle of the harpe. 



The species is not common and is apparently a northern or mountain 

 form. It should not be difficult of recognition from its resemblance to 

 aflantica. 



Mamestra canadensis Smith. 

 1837. Smith, Proc. U. S. Xat. Mus., x, 464 ; Mamestra. 



Dull sordid fuscous brown ; a pale, more yellowish red shade at base 

 superiorly, in median space beyond claviform, and from the reniform 

 outward. Transverse lines evident, geminate. Basal line obscured by 

 the pale shade, which is inferiorly limited by a fine black longitudinal 

 line. T. a. line lunate, the included space marked with white scales. 

 T. p. line sinuate, parallel to the very oblique outer margin; not veiy 

 distinctly marked. S. t. line narrow, white, interrupted, the W mark 

 prominent. An irregular dusky shade and spots mark both sides of 

 the line. Claviform concolorous, large, broad, extending almost across 

 the median space. Orbicular oblique, ovate, black ringed, paler than 

 the ground color. Keniform very large, outwardly indefinite, and 

 invaded by a pale shade which extends toward and is lost in the ground 

 color before it reaches the apex. The head and collar inferiorly are 

 pale ; collar superiorly and thorax of ground color of primaries. Second- 

 aries dirty gray. Beneath, obscure fuscous gray, powderj^. 



Expands 37""" (1.48 inches). 



Habitat. — New Brunswick. 



I have seen only a single male specimen, in rather i)oor condition, 

 from Mr. Thaxter's collection. It is like subjuncta in wing form, and 



