604 [December 



its parasite, — perhaps nine-tentlis of those which I have taken, having 

 been thus destroyed. It is usually after the last molting, while to all 

 appearance the larva is uninjured and thriving, that numerous little 

 heads may be seen, forcing their way through the skin of its back and 

 sides. Within an hour's time, the entire brood of grubs has emerged. 

 With their terminal segment remaining in the opening made by the 

 escape of their bodies, they at once commence building about them- 

 selves, small, firm, snow-white cocoons, which standing on end, are 

 usually so abundant as to cover the entire body ; in a couple of hours, 

 they are wholly inclosed. In about a week, the parasite — a small Hy- 

 menopterous insect — is developed, escaping from the cocoon by pushing- 

 open a nicely fitting lid. 



The more fortunate larva, having safely reached maturity, spins 

 loosely together a few leaves, on the surface of the ground, or on the 

 bottom of its breeding cage, and changes to a pupa in three days. 



The Pupa is 1 in. to 1.20 long, .35 in. broad, cylindro-conical, light 

 brown. Head-case rounded, depressed, with black dots, and a black 

 crescent on the eye-case. Wing-cases lighter brown, with roundish 

 black spots irregularly spaced, on the nervures, and a cluster near the 

 base. Tongue and les; cases also dotted with black. Segments dark 

 brown at the incisures, covered with numerous small indentations, some 

 of which are black — those of the last two segments more conspicuous. 

 First stigma, with a black spot posterior to it, — the other stigmata sur- 

 rounded with black. Terminal spine, .10 in. long, curved, smooth, 

 shining black, minutely bifid. 2^,29- 



Imago : appears from the middle of June to August. In a warm 

 room, and in a favorable position, I have had it emerge as early as 

 December 4th. It varies much in size, and in depth of coloring. 



C ERATO MIA QUADRICORiNIS Harris. 



In Vol. I. Proceed. Ent. Soc. p. 292, I have given a description of 

 the pupa of this species, which is not sufiiciently minute, to serve the 

 purpose of positive identification. The possession of a number of the 

 pupas, affords me the means of a more thorough description, and I ac- 

 cordingly withdraw the former, and offer instead, the following: 



Pupa. 1.55 in. to 1.90 in. long, .50 in. broad. Head-case small, 

 depressed, projecting but slightly beyond the anterior margin of the 

 first segment. Eye-case, margined inferiorly by an impressed line. 



