9 



300 



branch, by the aid of a thread of silk, when inclined to wander. I have one 

 in a vial of spirit that was feeding, the only one I could procure, and lour 

 others that had closed their sacks for the season," etc. " The drop-worm 

 pod, which I enclose, is empty. It is off a maple, and larger than the one 

 last sent. My brother promises a box full from Maryland, where he resides. 

 He says they have been on his cedar trees in profusion this summer." 



Larva (in spirit), taken Sept. 20?, fusiform, broadest across the fifth ring, 

 as seen on the back, but seen laterally the third and fourth rings are the 

 thickest. Length fifteen sixteenths of an inch. Body, except the head 

 and first three rings, livid, smooth, without hairs. Head moderate, hemi- 

 spherical, white, spotted Avith black, one row of six spots in 

 t form of an angle in front, and behind them on each side three 



lineal' spots, with others of an irregular shape near them. Five 

 Fig. 43. 



eyelets in a circle, immediately behind each of the palpi. First 



segment corneous above, white, regularly ornamented with black spots, 

 second and third segments shorter and much wider. The second with a 

 transverse, corneous, white plate above, marked with four large, longitu- 

 dinal, black spots, and two black dots; third segment with transverse, oval, 

 corneous plates, particolored black and white. Legs very large, all directed 

 forwards and claw-like, having the coxse of each pair very large, lamellate, 

 and coalescing by a suture. The third pair of legs the largest, the others 

 progressively smaller, all ending with a single stout claw. Cox 33 parti- 

 colored black and white. Legs castaneous, except the last joint, which is 

 piceous red. Intermediate prolegs not prominent, but visible by their trans- 

 verse oval coronets of hooks. Spiracles eighteen, in the usual order. Anal 

 chippet perpendicular. The larvae are found in their cases with the head 

 towards the top, the Case having a cylindrical hole above as well as below, 

 but the upper one closes naturally by the weight of the case when hanging. 

 All the dead larva; were found head uppermost, and never towards the 

 lower orifice. 



Pupa of the male head downwards, and half exserted when the insect is 

 ready to disclose the moth. 



Put a quantity of the pods on the arbor vitae in May. Found the larvae 

 and their pods, the latter three eighths of an inch long, on the arbor vitas 

 and adjacent apple trees, July 20, 1850. 



Limacodes scapha Harr. [PI. in, fig. 8.] 



In Sept. and .Oct. 1827, I found on the apple tree some small larva?, sim- 

 ilar in form and color to the one figured, which came from the black walnut 

 tree. They were deep green above, the lateral angles and margins reddish; 

 pale green beneath; feet (if any) retractile. Cocoon dense, almost parch- 

 ment-like. 



