58 
In the Tenth Eeport from this office, a brief paragraph contain¬ 
ing no new information is devoted to this species. In the Report 
of the Entomologist of the United States Department of Agriculture 
printed in the Report of the Department for 1881 and 1882, Mr. 
Riley speaks of this species while discussing insect injuries to grow¬ 
ing rice, noting its occasional injury to that plant, and making sug¬ 
gestions for the arrest of its ravages when they become serious. In 
Mr. J. A. Lintner’s First Report as State Entomologist of New York 
(1882), the grass w>rm is simply included in a list of species in- 
jurious to the apple. 
* ‘ 9 
NOMENCLATURE. 
This insect, as already remarked, was first described under the 
name of Plialcena frugiperda , and has since received the scientific 
names of Prodenia daggyi, Riley; Prodenia autumnalis, Riley; and 
Laphygma frugiperda, usually incorrectly printed Laphrygma in 
the articles of Walsh and Riley.) 
Its common names have been equally numerous. The prevalent 
one in the Southern States is, apparently, the “grass worm" or 
“grass caterpillar,” while to the northward it has been, perhaps 
more generally, called the “fall army worm.” Riley first gave to it 
the name of wheat cutworm, and by many it. is erroneously styled 
the “army worm,” on the supposition that it is the fall brood of 
that far more common and destructive pest. In order to avoid this 
erroneous association of our species with the common army worm, 
it seems to me decidedly best that the name of fall army worm 
should be dropped and that of grass ivorm be commonly used in¬ 
stead. 
DESCRIPTION. 
Imago. —Front wings narrow, apex broadly rounded. General col¬ 
or brownish grey, varied with bluish white, dusky and fulvous. A 
bluish white patch at the apex of the wing, usually containing a 
few black points. Subterminal line arcuate, of the same color, con¬ 
tinuous with this patch in front, sometimes obsolete at the terminal 
angle of the wing, but sometimes complete. Before the subtermi¬ 
nal line and within the apical patch is a dark blotch upon the 
middle of the wing, which sometimes contains one or two triangular 
black points. Transverse anterior and transverse posterior line.' 
sometimes obsolete, when present, double, zigzag. Base of wing 
slightly paler, with a longitudinal black blotch in the middle. 
Orbicular spot obliquely oval, pale testaceous, with an oblique mark 
of same color immediately without. Reniform spot obscure, distin¬ 
guished in front and behind by small whitish blotches, the postenoi 
linear, often shaped like the letter e, the anterior variable. bp° D 
the costal margin, a series of whitish dashes, four of them between 
the reniform spot and the apex, and as many more, obsolete, between 
that and the base. Terminal line pale, subterminal space dark, 
divided into quadrate blotches by the nervures. Fringe paler gra), 
the scales tipped with black between the nervures. Under surface 
