Packard.] 



144 



[Nov. 19, 



The puparium of Calllpliora vomit oria is cylindrical, slender, flask- 

 shaped, being thickest on the anterior third of the body, thence grad- 

 ually narrowing to the posterior end and suddenly contracting, leav- 

 ing a well marked neck, which is much darker colored than the rest 

 of the body, which is of the usual dark red color. The spiracles are 

 quite prominent, extending as far as the extreme tip of the head ; 

 they are of much the same form as in the larva, and with from twelve 

 to thirteen deeply marked divisions. (In one larva there are nine 

 lobules.) 



Two broad bands and a narrow linear accessory line of minute 

 granulations cross each segment, and become curved a little ante- 

 riorly along the dorsal line. The constricted end of the case is pro- 

 vided with twelve prominent rugose granulated spines, with longitud_ 

 inal ridges on the neck terminating between the spines; and along 

 the ventral side of the neck is a ridge, less sharp and prominent than 

 in Sarcophaga, and with larger granulations. The rudiments of the 

 prop-legs consist of two lateral conical projections and a median 

 furrow. The projections are a little farther apart, and more slender 

 than in Sarcophaga, but the differences are very slight. The dorsal 

 ridge ending between the two uppermost circum-anal projections is 

 obscurely marked, while in Sarcophaga it is distinct and sharp. 



The divisions of the stigmata are very plainly and deeply cut, 

 while in Sarcophaga carnaria there are no indications of the incisions, 

 the edge beino; ruo-ose, but not crenulated. 

 This is the most important distinguishing 

 mark in the puparia of the two genera. 

 Length .30-.35 inch. 



The puparium of Sarcophaga carnaria 

 (described from specimens received from 

 Rev. Mr. S. Lockwood) is twice as bulky 

 as that of Calliphora vomitoria. It is cylin- 

 drical, not tapering so gradually posteriorly 

 as in C. vomitoria, and not contracte'd at the 

 end into so long a neck. The twelve blunt 

 spines surrounding the spiracular region are 

 much smaller, less conspicuous, and do not 

 project, except the two lower ones, beyond 

 the end of the puparium. The ridges ending 

 between these spines are much higher and 

 sharper than in C. vomitoria. The dorsal 



f 



Puparium of Sarco- 

 phaga carnaria. 



