252 PAPERS BY DR. B. CLEMENS. 



principal stems amongst the thorns, and it is not easy to dis- 

 tinguish them from the spines of the rose-bush. 



Variety. Two specimens were obtained from the cases of 

 sweet briar-feeders which varied in colour from the others, 

 although the cases were not distinguishable. The imagos 

 have the fore-wings dark ochreous, and the hind-wings dark 

 brown. 



The imagos appear during the latter part of May and early 

 in June. 



There is a strong resemblance between the variety of 

 C. Rosacella and the European C. Limosipennella, the larva 

 of which feeds on the elm-leaf. 



Easton, Pennsylvania. 



DASYCERA, Haw. 



Hind-wings ovate. The subcostal vein is simple. The 

 discal vein, which closes the discoidal cell, gives rise to two 

 discal branches. The median is 3-branched, the two upper 

 branches arising on a common stalk. The submedian and 

 internal veins are distinct. 



Fore-wings elongate, lanceolate. The subcostal vein sub- 

 divides into four marginal branches, the apical furcate, both 

 branches reach the costa behind the tip. The discal vein 

 sands two branches to the hinder margin beneath the tip, and 

 the median vein is 3-branched. The fold is thickened at its 

 tip and the submedian furcate at its base. 



Head smooth. Ocelli none. Antennae towards the base 

 thickened, with hairy scales on the back of the base, with the 

 apex comparatively naked, slightly ciliated. Labial palpi 

 reflexed, ascending above the vertex, the end of the middle 

 joint equal with the forehead ; the second joint compressed 

 with appressed scales ; the terminal joint slender, pointed, 

 nearly as long as the second joint. Maxillary palpi short. 

 Tongue somewhat longer than the anterior coxae, clothed with 

 scales. 



D. Newmanella. Fore-wings purple, with an orange- 



