124 



allied to Stauropus. Till last Sunday I never had a chance of 

 examining the $ of this genus, having only the 9 . However, 

 a fine of S. fagi has come out in my brother's breeding 

 cage. It certainly is slightly different, especially in having a 

 very tufted abdomen, as has the 9 . Of my 60, 56 and 57, I 

 have only maLs. But I have two or three nearly allied species 

 of a grayish hue, which I took at Trenton Falls in '37. Of 

 these I have females. They differ much from the 9 of Stau- 

 ropus. You know what an odd larva Stauropus has. If I 

 knew the larva of these I should know what to do. As it is, I 

 must either make a new genus in weak characters, or put them 

 provisionally in Stauropus, make them Stauropiis ad interim, 

 as the French make ministries. 



Then comes a genus for which I mean to propose (if I de- 

 scribe it) the name of Chcetceessa, from a singular tuft of hair 

 arising on each side at the base, of the antennaa, and meeting 

 over the vertex so as to form two sides of a triangle, of which 

 the vertex is the base. The palpi are triarticulate, rather long, 

 second joint the longest, stout, rather compressed. The an- 

 tenna? are beautifully bipectinate for about two-thirds of their 

 length. I have only one species with rufo-ferruginous anterior 

 wings, having a broad, transverse, whitish or cinereous band 

 across the middle. There are some little black markings near 

 the nervures. 



I have had a great lot of insects from Wilmington, Del., but 

 nothing new to me save Chremastocheilus Sayi, and one or two 

 Sphinges, all of which you have. I find that P. Grlaucus occurs 

 there ; there were two amongst a lot of P. Troilus. 



DOUBLEDAY TO HARIUS. 



EPPING, June 26, 1839. 



As to Callimorplia Lecontei and militaris, I can only say that 

 at Trenton I took a series of them running one into the other, 



