Clje Canabian ^ntomolngist. 



VOL. IX. LONDON, ONT., JUNE, 1877. No. 6 



ON A NEW CANADIAN CRAMBUS ALLIED TO CONCHELLUS. 



VjV a. r. grote, 

 Director of the Alusen/ii, Buffalo Society Natural Sciences. 



Mr. Wm. Saunders has collected a species of Crambtis, which is 

 apparently unnoticed by Prof, Zeller or Dr. Clemens, who have written 

 most frequently on our American species. The new species, which I call 

 C. ifiterruptus, is very easily recognized and has been figured by Prof. 

 Townend Glover on his Plates of Lepidoptera. The head is white ; palpi 

 inwardly and beneath white, outwardly dark brown. Thorax white, 

 patagia bjight brown. Hind wings and abdomen pearly gray. Fore 

 wings bright brown with a longitudinal white median band obliquely 

 interrupted at the middle of the wing by the ground color. Beyond is a 

 white block on the outer half of the wing, with its inner and outer edges 

 inwardly oblique and its upper edge longer than its inferior margin. Be 

 yond this, before the external margin, is a white band, following the shape 

 of the wing and discontinued above and below. The brown space 

 between this band and the block of white is narrower above than below. 

 In this simply marked species the whole ornamentation seems to be 

 limited to a longitudinal white band, widening outwardly and interrupted 

 mesially and subterminally obliquely by the brown ground color of the 

 wing. There is a sub-obsolete series of minute terminal black points ; 

 fringes fuscous, interrupted with white at the middle of the wing and again 

 near internal angle. Beneath the hind wings are almost white ; the fore 

 wings shaded with fuscous. 



When we compare C. i7iterruptiis with the European C. conchellus, we 

 see that the pattern of ornamentation is very similar in the two forms. The 

 American species differs by the white band before the external margin. In 

 C. conchellus there is merely the basal vitta and the outer block of white 



