ea PROCEEDINGS OF THE NATIONAL MUSEUM. 37 
to the end of the angulation, which is acute at tip. The thoracic dor- 
sum is dusky. 
Dorsalis is very like the preceding and is its western representative. 
It differs in the clearer gray color without fuscous admixture and the 
dorsum of thorax is concolorous and not darker. 
Bistriga is an intruder here, and may eventually, if it finds allies, get 
another genus. It is smaller than any other of the species and the 
abdomen does not much exceed the secondaries. In other characters it 
does not differ essentially, and a new genus would be premature. Itisa 
rather even gray, somewhat coarsely black-powdered along the costa. 
There is a distinct black streak along inner margin from base, and 
another broader streak from the t. a. line to outer margin through the 
submedian interspace. The secondaries have the dusky outer margin 
much less definite, and as a whole the species can not be mistaken. 
The remaining two species have the secondaries smoky fuscous, and 
the primaries deep bluish ash-gray. 
Intermedia has the median lines indicated on the costa, and generally 
traceable, sometimes distinct, for the remainder of thecourse. It is an 
eastern species. 
Cinderella is smaller, the forewings narrower, more pointed, and im- 
maculate save for a series of terminal black lunules, preceded by short 
black lines. It is from Colorado. 
This last species, at first sight, looks doubtful, and yet I would be sur- 
prised if even large material proved it a form of intermedia. Ina genus 
in which the species are less closely related I would not have described 
it, nor would I have described it at all save in a revision like the pres- 
ent, where its position and rank can be compared and such differences 
as exist broughtout. The genitalia closely resemble those of intermedia, 
but are noticeably different, and emphasize the probability of specific 
distinctness. 
The present revision is based very largely on material received from 
the U. S. National Museum through the courtesy of Dr. Riley, the hon- 
orary curator, and all the old species are represented in that collection. 
I have added all the species described by myself, so that of the known 
species the Museum contains a full series. The species described as 
luna by Mr. Morrison is an Heliothid. 
I have seen the types of postera and florea in the British Museum, 
so that I am certain of the correctness of the identification of these 
species. 
To Dr. J. A. Lintner I owe thanks for a copy of his Entomological 
Contributions, No. 111, containing two photographic plates of Cucullia, 
European as wellas American. The plates are among the finest of their 
kind known to me, and the species are distinctly and clearly shown in 
‘all the details of maculation. Dr. Lintner there points out some of the 
relationships of our species to European forms, and his paper should be 
consulted on that point. To Mr. Bruce I owe a fine series of Colorado 
