18 Journal New York Entomological Society. [Voi. xl 



General Notes on Scotogramma. 

 In my revision of some Taeniocampid genera (Proc. U. S. Nat. 

 Mus., 1889, XII, pp. 445-496) I recognized six species as belonging 

 to this genus. The group to which the generic term is applied is not 

 a very satisfactory one, including as it does forms in which the vesti- 

 ture is thin, hairy and divergent, and others in which it is scaly and 

 close. Yet the species have a habital resemblance, and the line be- 

 tween the two kinds of vestiture is not sharply defined. All of them 

 are obscurely marked and while in some respects the relationship seems 

 close, the resemblances are usually more apparent than real. Since 

 1889 eight species have been described by myself and one, described 

 in this paper, brings the total number up to fifteen. In 1889 the male 

 of stihmarina only was known and that was figured on PI. XXII, Fig. 

 17, of the paper cited. The males of seven additional species are 

 now at hand and figures of the genitalic characters are presented on 

 PI. I, Figs. 15 to 21. It will be noted that there are two rather 

 obvious types, one of which is composed of densa and ynegcera only. 

 Comparisons are best made from the figures, and while the forms are 

 very similar, the differences are sufiicient to hold the species. The 

 superficial differences are even greater and, in the series before me, 

 comprising both sexes of both species, there is not a trace of any inter- 

 gradation. Alegara is uniformly larger, with proportionately more 

 aniple wings and the color is altogether different. That they can be 

 varieties of one species does not seem credible to me. Yery much 

 the same type of genitalic structure is found in Mamestra variolata as 

 figured on PI. IX, Fig. 35, Proc. U. S. Nat. Mus., XIY, 1891, 

 though there is no resemblance between the insects themselves. In 

 siibmarina, on the other hand, which is superficially a close ally to 

 densa and megcei-a, the genitalic characters are totally different : indeed 

 they are unlike those of any other species of the genus. The other five 

 species here referred to agree in a general way, the harpes being oblong, 

 a little bent toward tip, the rounded lappet set with a series of spinules. 

 The corneous claspers are double, and in this character they are 

 Tteniocampid rather than Mamestrid. S. lutcola and iiiiiformi'; are 

 most nearly allied, but in the former the harpes are not only 

 relatively but absolutely smaller and broader, while the claspers differ 

 in proportion to each other and to the same structures in the other 

 species. Fhoca, discolor and infiiscata differ sufficiently to make a 

 reference to the genitalic characters unnecessary, though in each form 



