176 THE CANADIAN ENTOMOLOGIST. 



CoMis, Grote. Pacific coast and mountains adjoining. 

  obnigra^ Smith. 

 rectilinea, Smith. 

 maXe peiifa, Smiih. 

 davena, Smith. 



316. M. sutrina, Grt. — Very rare. End May and June. One of 

 my specimens has been compared with the types by Sir George Hampson. 

 Prof. Smith says in his Catalogue: '• It resembles /ustraiis more than it 

 does cuneata, but the male antennae are simple. In its position next to 

 aineata, its resemblance to histralis will serve to distinguish it." Since 

 that was written, a closer acquaintance with the species has caused him to 

 change his opinion, for in his "Notes on Mamestra," in Journ. N. Y. Ent. 

 Soc, XL, No. I, p. 16 (March, 1903), he says: ''Sutrina, which is so 

 nearly like cuneata that it might be readily confused with it, has the male 

 characters entirely different." I have only had opportunity of comparing 

 it with one specimen of each ; liistralis sent me named by Dr. Barnes, 

 and cuneata from Victoria, B. C. I should certainly never have remarked 

 upon any resemblance to histralis, whilst its likeness to cuneata is very 

 decided. That specimen differs from it, however, chiefly in having the 

 s. t. I'ne obsolete, the orbicular oblong, oblique, instead of rounded, and a 

 small golden-yellow speck in s. t. space near anal angle. All my sutrina^ 

 too, have a gray patch in median area between claviform and reniform. 

 My specimen of cuneata shows no trace of this whatever. A further note 

 on sutrina and its genitalia will be found in Ent. News for December, 

 1898. It has also been taken in Yellowstone Park, Wyo. The type is 

 from Colorado. 



317. ^. ^rm, Grt.— Fairly common. End June and July. 



318. M. larissa, Smith. — Described from here, and figured with the 

 description. Not common. June and early July. Its author says : 

 " The (? is a bright specimen and reminds me at first sight of Litholomia 

 napcea. The species belongs in the series with vicina, but differs from all 

 the forms of that species represented in my collection by the absence of a 

 black basal streak." The suggestion of napcea at first sight is undeniable, 

 though, when closely examined, the two are so unlike that comparison here 

 would be odious. Most of my specimens have a fine, black basal streak. 

 They differ from the species I hold as vicina amongst other respects in hav. 

 ing the claviform ovate rather than sharply dentate. The name has been 

 by some collectors looked upon as a synonym of anguina, Grote, but on 



