434 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
Hit moth.— Fore- wings white-graj near the anal angle between reina 1 and 
.ml eonspiouoaa spot like a Greek letter psi, planed side wise, and from this spot 
a somewhat sigsag line rune parallel with the posterior border, forming a Large dart- 
like spot between veins 5 and 0. (Kil< . 
12. Smtrinthus modest us Harris. 
Larva on Cottonwood in Illinois. (C. E. Worthiugton, Can. Em., x, p. 16.) 
13. Centra borealis BoisfL 
Whether this is the C. boreal is or uot, it is the one mentioned by 
Abbot and Smith as occurring on this tree as well as the wild cherry 
and willow. According to them, on the 10th of August, in Georgia, 
k * it inclosed itself in a case made of chips of the wood, and affixed to a 
branch. The moth came out April 24. It likewise feeds on the wild 
cheny and willow, and is found also in Virginia, but it is a very rare 
species." 
14. Ichthyura inclusa Hiibn. 
Accordiug to Abbot and Smith this species occurs on this tree as well 
as the willow, in Georgia. "The caterpillars all live in a web, among 
the leaves spun together. One inclosed itself entirely May 25 and 
came out June 8. Another, which spun itself up October 25, did not 
appear till the 8th of March following. The moth is rare in its perfect 
state, though found in Virginia as well as in Georgia." 
15. Pemphigus popuH-trarisrersus Riley. 
Forming a gall upon the petiole near the base of the leaf of Populus monilifera and 
P. bahamifera. Missouri, southern Texas, and Colorado. (Riley.) 
16. Pemphigus populi-monilis Riley. 
On the narrow-leaved cottouwood in Colorado forming a series of more or less con- 
fluent mouiliform swellings on the upper side of the leaf. 
17. Pemphigus populi-ramulorum Riley. 
Forming an irregular globular gall, often somewhat flattened, on the twigs of 
Populus bahamifera in Colorado. (Riley.) 
18. Pemphigus pseudobyrsa Walsh. 
Occurs on Populus angulata. (Thomas, viii, p. 151.) 
19. Pemphigus vagabundus Walsh. 
Produces a large irregular gall on the tips of the twigs of certain cottonwoods. 
(Thomas, viii, p 151.) 
20. Pemphigus populicauli* ; Fitch. (Le Baron.) 
Also occurs on the aspen (Populus tremuloides) in Wisconsin. (Thomas, viii, p. 149.) 
2L Chaitophorus populicola Thomas. 
Found in July at Carbondale, 111., and early in September on the under side of 
young sprouts of Populus angulata (cottouwood). 
