no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 113 



on the inner side. The median spine on the eighth abdominal segment is forked, and of the 

 same shape as those on the thoracic segments. The longer tubercles with their setae are about 

 as long as the body is thick. Head with a few long whitish hairs. The spines all differ from 

 those of Automeris io in sending off but a single very long seta, and there are short stout ones at 

 the base of the long seta; they differ from those of Hemileuca maia in the same way. The 

 generic larval characters thus appear in stage I. 



After eating a while they all (five or six of them) marched off in Indian file. In about 

 three or four hours after escaping from the egg they had all turned dark livid greenish, the 

 body including the tubercles and anal legs, but the middle abdominal legs were still dark honey- 

 yellow. In a few hours after the entire larva becomes black, except the whitish hairs and the 

 middle abdominal legs, which are blackish and dark yellowish, all the tubercles being black. 



Habits. — The females deposit their eggs on the trunks of the pine and sometimes aspen, or 

 any other tree they happen to be on, late in the summer at Fort Klamath, Oreg. In the 

 autumn of 1896, Mr. Cunningham found a batch of eggs on a living pine tree about 80 feet 

 from the ground, late in the autumn. Mr. C. A. Wiley writes me that the eggs hatch ha June, 

 at Miles City, Mont. 



[C. lois Dyar, Proc. Ent. Soc. Washington, XIII (1911), p. S9, was based on material col- 

 lected by C. A. Wiley at Miles City, Mont. The types of lois are figured, but Dr. Dyar now 

 considers it identical with C. doris.] 



This moth is common at Fort Klamath in certain years. In 1892, Mr. B. L. Cunningham 

 writes me, they were abundant, and up to that year "they had appeared regularly in numbers 

 every other year," but after that time they were very rarely seen. The young larvae are very 

 restless and in the absence of food travel about in Indian file. 



Food plant. — According to Mr. Burton L. Cunningham, the larvae feed on the needles of 

 the "yellow pine." They refuse the leaves of any of the commoner deciduous trees. 



Geographical distribution. — So far as I can learn it is most abundant at Fort Klamath, in 

 southern Oregon (Cunningham) ; also a variety of it in Garfield County, Colo. (Bruce) ; 

 Salem, Oreg. "I have never seen or heard of it at Seattle" (Prof. O. B. Johnson in litt.). It 

 has also been collected by Prof. F. H. Snow in Gallinas Canyon, N. Mex. (Cockerell in litt.). 

 [Prof. Robert H. Wolcott writes (litt. December, 1912): "While in Sioux County, Nebr., a year 

 ago last summer, during the last week of August, I picked up a dead specimen of Coloradia 

 pandora ha fan condition. It was lying on the ground at the bottoioa of Monroe Canyon, 

 beneath a dense clump of box elders and ehaas. On August 12, this year, Mr. Ralph Dawson 

 took another specimen ha the saane canyon in fine conditio ia."] 



[Subgenus EUDYARIA Grote.] 



[Dr. Dyar has abstracted the pertinent parts of Grote's original account, as follows: 



Rippen I Y 2 and IV 2 sind nicht gegabelt aber gesondert Agliidx. 



Rippe IIIi, entsprijigt oberhaib des Radius Automerinx. 



Vorderfliigel am Aussenrande ganz. 

 Hinterfliigel ohne Augenflecke. 



Obere Kamrareihe der Fiihlhomer des a* ist weniger als halb so long wie die untere Reihe Eudyaria. 



In the text he says: "Die Raupe der sudamerikanischen Art Eudyaria venata zeigt auf XI 

 und XII die Tuberkel I verschmolzen. Das Afterschild ist glatt. Vorhanden sind drei Reiheia 

 dornahnlicher Auswiichse von gleicher Lange, mit denen von Automeris ubereinstimmeiad. 

 Diese Gattung benenne ich nach meinem Freunde Dr. Dyar * * *."] 



[On a small scrap of paper, evidently of later date than the account given below, Dr. Packard 

 has written:] 



Eudyaria is probably a good genus. Palpi and venation differ from Coloradia. [Packard's 

 figures represent the male of C. pandora and the female of Eudyaria venata. My female 

 Coloradia, from New Mexico, differs from the figure of d pandora in the hind wing, III and IV 

 83570°— 14 8 



