THE CANADIAN ENTOMOLOGIST. 255 



AA. Apices of elytra not produced into a spine or process. 

 B. Elytral apex obtusely angulated at the suture. 

 C. Elytra without raised linear elevations. 



D. Scutellum generally covered with ashy scal-es, posterior margin round- 

 ed; elytra with a vague bronze lustre, maculation often entirely 



absent ; general color black scutellatus Say 



DD. Scutellum bilobed or V-shaped with orily the lobes covered with 

 ashy scales and separated by a minute triangular glabrous area ; 

 maculation of elytra absent or sparse ; general color densely black. 



orcgonensis Lee. 

 CC. Elytra with raised linear elevations. 



Scutellum sparsely clothed except towards the margins ; elytra densely, 

 finely punctured with scattered, raised, often linear, glabrous areas ; 



general color greyish brown notatus Drury 



BB. Elytral apex not angulated at the suture, evenly rounded ; punctation 

 sparse and fine, scutellum glabrous and rufous; general color rufous. 



obfusus Casey 



M. titUlator Fab. (Lamia), 1775, Syst. Eiit. p. 279. 



caroline.'isis Oliv. ; minor Lee. ; dentator Fab. 



Col. Casey has resurrected carolincnsis Oliv. from the synonymy of this 

 species. Leng and others treat the name as a synonym. In long series every 

 variation in size, maculation and reduction of the spine into a blunt form may 

 be found. 



I have a specimen of titUlator from the southern Sierras of California, 

 which I collected over twenty-five years ago. I have, however, a strong suspi- 

 cion that my California specimen came from lumber shipped from the east. 

 Former reports of the capture of this species from California probably refer 

 to M. obtusus Casey. 



The slender antennae and the sparse punctation in the cinereous areas 

 will always serve to separate this species from maculosus, besides the differences 

 enumerated in the key; the vestiture consists of light brown or yellowish tomen- 

 tose areas separated by cinereous areas, sparsely punctured. Specimens from 

 the far north have only indications of the ashy areas, and seem narrower in 

 form ; however,. I cannot separate them from titUlator by any definite charac- 

 ters. Length, 13 to 25 mm. 



Host. — Pinus palustris, P. strobus and probably all pines and Abies bal- 

 samea. 



Habitat. — Eastern North America, extending west to Alabama in the 

 'south and possibly to British Columbia and Alaska. 



M. maculosus Hald., 1874, Trans. Am. Phil. Soc, X, p. 51. 

 strenuus Casey; oregonensis Lee. (Casey); clamator Lee. 

 Col. Casey's interpretation of M. oregonensis Lee. as well as his strenuus 

 seem to belong here. Occasional specimens of maculosus in a series from the 

 same tree show all variations of "rusty brown tomentum". The length of the 

 antennae is very variable in all species and series. The rugosities of the elytra 

 are irregular in form, the vestiture consisting of dark brown, rusty brown or 



