122 



few, so send you only two of it. My Theda, 28, seems to be 

 the acis of Drary. 



When at Charleston, I observed on the branches of Cupres- 

 sus tliyoides a number of cocoons composed of silk, intermixed 

 with fragments of the shoots of the Cuprcssus. There were 

 hundreds on some trees. Within was a white larva, as of some 

 internal feeder. The first thoracic segment horny, the two 

 anterior pairs of legs small, the third larger ; prolegs very small. 

 None of those I saved turned, but Dr. Bachman gave me the 

 perfect insect, and what should I find out since my return that 

 it is but the Sphinx ephemerceformis of Haworth, Tliyridop- 

 teryx epliemerceformis of Stephens (Ent. Soc. Trans., Vol. 1). 

 [See beyond, Harris to Miss Morris, Sept. 25, 1850.] 



Children has another Alypia from Nova Scotia. I will try 

 and describe this and my Egeria and Trocliilium in Charles- 

 worth for May. Is your Trocli. tipuliforme reaHy ours ? 



And now to go on to the Bombyces. Is Boisduval's (in 

 Guerin) Sericaria sanceceps the same as Drury's ministra, Vol. 

 II, pi. xiv, fig. 3? Of the Arctia Lecontei of Boisd. (Guerin, 

 Icon. R. A.) I have all manner of varieties; your militaris is 

 another one. The white spots becoming confluent in a differ- 

 ent manner, will account for all these variations. I have 

 made out a difference in the species so close to our Caja, which 

 will serve to distinguish it. 



You inquire about the habits of Ctenucha semidiaphana. I 

 took it in September in Illinois on flowers, especially on the 

 different species of Solidayo, flying by day. Again I took it in 

 Florida by night, for they used to fly to my lamp. I do not 

 remember to have taken one by day there. JEgeria ompliale I 

 took once at night, once flying by day in a sunny spolf in the 

 midst of a thick hummock. 



