1863.] 
31 
onyms. I do not consider Arctia ruhricom Harris, as a synonym of 
Crocota ruhricundaria Htibn. (See App. to Morris’ Synopsis.) Harris’ 
figure and description point to a much larger species belonging to a 
different genus, a specimen of which I have determined in the Collec¬ 
tion of this Society. The description of C. opella was by error placed 
under Lithosina. The place for this genus is unmistakeably under 
the present family. 
LITHOSINA, H.S. 
Gen. HYPOPREPIA, Hiibn. 
H. Packardii n. sp. (See plate 2 , fig. 5, 9 •) 
Anterior wings entire, silky, dark steel grey with a yellowish well 
defined spot on the costa near the apex. A band of the same color on 
the internal margin, well defined and commencing near the internal 
angle and continuing to the base of the wing, showing a spot of the 
same shade as the ground color. Posterior wings rose color with a 
wide greyish border not extending quite to the anal angle. Under side 
of the wings showing the markings of the upper. Head rose color. 
Antennae darkish. Thorax yellowish. Abdomen rose color. Exp. 
eleven sixteenths of an inch. (Coll. Ent. Soc. Philad.) 
A female taken in Pennsylvania. 
In coloring, this species resembles H. fucosa Hiibn., of which latter 
species LitJiosia miniata Kirby and Gnopliria vitatta Harris, are un¬ 
doubtedly synonyms. 
I have dedicated this species to Mr. A. S. Packard Jr, of Bruns¬ 
wick, Maine, an Entomologist to whom I am indebted for many kind¬ 
nesses. 
DENHIIOMETRINA, H. S. 
Gen. AMPHIDASYS Treitschke. 
A paenulataria n. sp. (See plate 2 , fig. %.) 
Anterior wings brownish-grey with a greyish semi-circular band at 
the base enclosing a dark brownish space, wider at the costa. Median 
