THE CANADIAN ENTOMOLOGIST. 



209 



within, commencing under the hood and feeding downward on the cellular 

 tissue, leaving only the epidermis. As it proceeds, the lower part of the 

 pitcher abo\e the putrescent insect collection becomes packed with 

 ochreous excrementitious droppings, and by the time the worm has 

 attained its full size the pitcher above these droppings generally collapses. 

 This worm, when full grown, is beautifully banded transversely with 

 white and purple or lake red. which Dr. jNIellichamp poetically likens in 

 brightness to the Tyrian dye. It is furthermore characterized by rows of 

 tubercles, which are especially prominent on the four larger legless joints. 

 It is a half looper, having but six prolegs, and keeps up, in travelling, a 

 constant, restless, wavering motion of the head and thoracic joints, 

 recalling paralysis agitaiis. The chrysalis is formed in a very slight 

 cocoon, usually just above or within the packed excrement. The species, 

 kindly determined by Mr. A. R, Grote, was many years ago figured by 

 Abbot, who found it feeding on Sarracenia variolaris, in Georgia. Guenee's 

 descriptions were made from these figures, for which reason I have made 

 some descriptive notes from the living material.* The species feeds alike 

 on S. varlolaris and S. fiava, and there are at least two broods each 

 year, the first brood of larv?e being found during the early part of May, 

 the second toward the end of June, and disappearing with the dying of 

 the leaves. 



The second species is a still more invariable living accompaniment of 

 both kinds of Sarracenia mentioned. By the time the whitish efflorescence 

 shows around the mouth of the 

 pitcher, the moist and macerated 

 insect remains at the bottom will be 

 found to almost invariably contain 

 a single whitish, legless grub or 

 ''gentle," about as large round as 

 a goosequill, tapering to the retrac- 

 tile head, which is furnished with 

 two curved, black, sharp hooks, 

 truncated and concave at the pos- 

 terior end of the body. 



Sarcophaga fsARRACEXi.E — CI, lan'a ; h, pupa ; 

 c, fly, the hair lines showing a\erag-e natural 

 lengths ; (/.enlarged heatl and first joint of larva, 

 showing carved hooks, lower lip (j/), and pro- 

 thoracic si)iracle ; c, end of body of same, show- 

 ing stigmata (/') and i)rolegs and \ent ; ]i . tarsal 

 claws of fly with protecting pads ; I, antenna of 

 same. All enhu-ged. 



This worm riots in the putrid insect remains, and when fed upon them 

 to repletion, bores through the leaf just above the petiole and burrows 



* These will be found in the Transactions of the 8t. Louis Academy of Science. 



