NORTH AMKRICAN LEPIDOPTERA. 101 



under which the head may be partly retracted. There is a subdorsal Hue ex- 

 teudiuj? from the head to the caudal horn — up to maturity it is yellowish, then 

 becomes pale white. There is also an indistinct line of yellowish changiuf; to 

 white. The ground color of the body below the subdorsal line is clear deep 

 green, above a blue green, deeper bluish toward dorsal line. Spiracles red s])ots 

 with a yellow dot above and below. Fore legs red, the others vitreous, capped 

 on outside with black, that with yellow. Body beneath pink between tenth and 

 last segments. Caudal horn prominent, stout, curved backward, light blue in 

 color with yellow and pink point. Larvae varying from 30 to 50 mm. in length." 



" There is much difference in the amount of red markings upon 

 the larvae. Some few are suffused with a crimson shade, and many 

 are strongly marked with red forming dorsal and lateral stripes." 



The eggs were deposited May 31st by a specimen of H. iinifontm. 

 They are generally deposited singly on the under side of leaves of 

 Viburnum leniago (Sheep beny), but in one instance Mr. Hulst says 

 he found ten eggs on the under side of one leaf. The larvie ajtpeared 

 June 7th; first moult June 11-12; second moult June 18-14; third 

 moult June 16-17 ; fourth moult June 21-22. They left their food 

 plant and began making cocoon June 29th. They })upated two days 

 later, and emerged July 15th as H. thyf<be. That is, from eggs laid 

 by H. uniformis were obtained imagos of H. thynbe. 



Mr. Hulst says that there is not much difference in maculation 

 throughout the life of the larva and that the cocoon is thin and 

 parchment like. 



H. Floridensis is described in Ann. Lye. N. H., N. Y. viii, 439, 

 as follows : 



"Form stout. Head above, dark olive green. Palpi projected beyond the 

 front, a])prosimate at their tips; above, blackish ; beneath, with under thoracic 

 surface, clear yellowish white. Legs, generally finely scaled ; anterior pair out- 

 wardly clothed with whitish scales; inwardly, the tegument is almost naked, 

 blackish and dusted with ferruginous atoms. Middle pair with the femora 

 clothed with yellowish white hair outwardly; inwardly blackish, naked ; tarsi 

 shading to blackish towards the extremities. Hind tarsi and the basal portion 

 of the tibial hairs black; inwardly, the tarsi are obsoletely shaded with pale 

 hairs. Thorax above entirely dark olive green, which color extends over the 

 two basal segments of the abdomen above. Next four segments above very deep 

 red, fringed sparsely anteriorly by short white hairs, which are easily removed 

 by attrition, appressed. Fifth and sixth segments with olive green lateral shades. 

 The fifth and sixth, and the anal segment of the male show yellowish white sub- 

 tufts at the sides. Anal tuft reddish in the middle, where the hairs are longest; 

 black at the sides; underneath, entirely bright red, where the hairs are more 

 thinly spread out and shorter than above, allowing the lower black surface of the 

 superior tuft to be seen ; under surface of abdomen bright red ; terminally a few 

 yellowish white hairs, gatliered um anal and pre-anal segments into small, medial 



