Augfust — December 1SS9.] 



PSYCHE. 



261 



has been very noticeable in all the ang7t- 

 cifera-\a.rwae we have seen. 



First seg'ment. Two small yellow 

 tubercles over the head, then on each 

 side, two black, raised dots, and one 

 just above the foot. 



Second and third segments. Two 

 large tubercles on the dorsum, black at 

 base, ringed with yellow, orange at tips, 

 smooth ; two black points on each side, 

 and one over the foot. 



Two other segments, to the eleventh 

 had, each, six black, raised points. 



lileventh segment. One large dorsal 

 tubercle, of clear yellow ringed with 

 black, and two black points on each 

 side. 



Twelfth segment. Four black points 

 and two black tubercles on the anal 

 shield. Anal shield and props edged 

 witli yellow, the props having a "horse- 

 shoe" of black on the outer side. Stig- 

 matal ridge conspicuous. Feet and 

 props whitish green. 



12 August. Fourth moult. As be- 

 fore, but larger, and having tubercles of 

 a bright coral red, instead of orange. 

 These tubercles were ringed with yel- 

 low, and were black at base. The 

 black ''horseshoe" on anal props be- 

 came a triangle of black, and each ab- 

 dominal prop had a black dot on the 

 outer side. 



The yellow-white, stigmatal ridge, 

 extending from third segment to anal 

 shield, was very noticeable. 



Spiracles inconspicuous. 



33 August. Began to spin. Just 

 before spinning the larvae measured 

 nearly 75 mm. in length, and 44 mm. 

 around the largest part of the body. 



The dots and tubercles were small in 

 proportion to the size of the larvae, and 

 less conspicuous than those of prome- 

 thea larvae. The tubercles were not 

 erect like those of promethea larvae, 

 and were ringed with yellow, — a mark- 

 ing which we have never found on pro- 

 methea. The body was cream-colored 

 above and somewhat greener on the 

 venter, the yellow, stigmatal ridge, 

 making a definite scalloped edge, end- 

 ing in the anal flap. 



The head was small in proportion. 



The tubercles, the stigmatal ridge, 

 and the smoother, creamier color form 

 the most marked differences between 

 promethea and angulifcra larvae, 

 which still closely resemble each other. 



We have never seen an angulifera 

 larva which would eat anything but the 

 leaves of tulip-tree {L/riodendron tuli- 

 pifera') , yv\)S[e. promothea larvae will eat 

 almost any leaf! 



The cocoons of angulifera were 

 rounder, and in no case did the larva 

 spin threads around the leaf-stem, or 

 fasten the stem to the twig, while the 

 promethea lai^va did this in every box 

 where twigs were provided. 



We feel that the two kinds are dis- 

 tinct and separate, although we have 

 some pro7nethea 9 moths w^hich are 

 very near angulifera in their markings. 

 The $ angulifera varies more from 

 the $ promethea than the 9 from 9 

 promethea^i although, in typical speci 

 mens, the diflerence is very marked. 



Pheosia rimosa Pack. 



Eggs, found on a poplar leaf, Non- 

 quitt, Mass., 28 August, 1888. They 



