180 



T-shaped slits in the pupa-skin close by their own elasticity, 

 so that the pupa-skin seems at first to be entire. I have only 

 one perfect specimen of the male [PI. ni, fig. 4.]. It has 

 curved antenna, doubly pectinated to the tip, but the pectin- 

 ations suddenly reduced in length towards the tip. The insect 

 therefore seems to be a true Olketicus. There is no white 

 spot on the disk of the wings, which, however, are semi-trans- 

 parent, and only furnished with scales on the margins and ner- 

 vures. 



I have not yet finished my investigations of this interesting 

 insect, and propose to continue them another year, should I live 

 and succeed in raising a brood of larvae in my garden. Then 

 I hope to give you in print a fidl account of this Olketicus^ un- 

 less Mr. Gosse favors us with the same. Perhaps he has al- 

 ready published his observations ; if so, please to let me know 

 where they are to be found. [See a letter from Dr. Harris to 

 Miss Morris, Sept. 25, 1850.] 



If there be any such thing in nature as affinity between 

 genera, I am convinced that Olketicus, Psyche and my Pero- 

 pJiora MeUheimeri are allied in this degree and all three of these 

 genera nearly related to Limacodes, on the one hand, and to 

 Zeuzera etc., on the other. 



