acca acceaee 
im 
1883. ] 157 [Grote, 
T have placed under Gortyna from Orthosia, and perhaps when the early 
stages are known, and the species more minutely studied, some changes 
will be found necessary. The principle changes from my classification, 
however, will probably be made with Polia, Dryobota, ete. 
The true type of Apamea, is, I believe, Nictitans. The genera Gortyna 
and Hydracia have the same type, Micacea. TY have employed the genus 
Ochria, used solely for Flavago in the ‘«Verzeichniss,’’ for our two spe- 
cies which have also a clypeal thorn, This character may be trivial, 
but it is everywhere used, and cannot be rejected arbitrarily. As with 
Sphida, it separates here species I would gladly keep united. From the 
pectinate antennw (the opposite of Nephelodes), the thoracic tuft and the 
general contour I would keep Tricholita, with its three species, distinct 
from Nephelodes ; the white reniform is characteristic, and allies the moths 
to Nietitans. I have a note to the effect that Seméaperta had been described 
previously by Walker, but cannot at the moment find the citation. With 
some few other changes, the fewer the better, this will be made whenever 
the British Museum collection is compared with our material. If the idea 
of justice or injustice can be held to be properly associated with matters 
of this kind, it may be held unjust to restore any of Dr. Walker's names 
where recognition is a matter of impossibility without reference to the 
type. This is the case with about three-fourths of his descriptions in the 
Noctuide. But, disagreeing with Professor Riley, Mr. Walker’s descrip- 
tion of Xylina Antennata and FH. Signosa are not of these, and the moths 
are referred moreover to the right genus. 
6. Arzamine m. This remarkable group has aquatic larvee, with spira- 
cles, as discovered by Prof. Comstock, and the larvee may be taken in the 
leaves of pond lilies and other water-plants and swimming free in the 
water. They inhabit ponds from Canada to Florida, and the chrysalis 
may be found under stones and logs on the margin, Obliquata is found in 
Niagara river, the pupa having occurred on Strawberry island. Vulnifica 
has been found at Ithaca, and what is probably a variety, with the anal 
(uft blackish, in Florida lakes. Déf'usa has been found in Maine and also 
collected by Mr. Moffat in Canada. The moths are very thick-bodied and 
heavy insects, remarkable for the large female anal tuft, like that of some 
forms of Bombyx. Sphida has the clypeus niucronate, Arzama unarmed ; 
the difference is very slight and unessential. 
%. Nonagriing m. This, to me the most interesting subfamily of the 
group, is equivalent to the Nonagriada of Dr. Harris, The eyes are full, 
naked or hairy, the thorax smoothly haired, rarely with a crest, the abdo- 
men untufted. The wings are rather narrower and longer than usual, most 
often of a pale buff, or the color of dried reeds. The moths are found by 
the sea-coast, or in marshy places quite often, and the larvee live on grasses. 
Nonagria has naked eyes and a large clypeal protuberance ; one species 
from Florida is of unusually large size. I class here Zota, which has some- 
what ovate fore wings and a triply pointed clypeal horn ; it resembles 
Senta in shape of wing, but the ornamentation is hadeniform. Tapinostola 
