Notes on Hemileuca, 53 



bottoms between Las Cruces and Rineon, and on up the Rio 

 Grande valley to Los Palomas, N. Mex. 



June 29, 1892. A good number found north of Winslow, 

 Arizona, on short Salix sprouts in the bottoms of the Little Col- 

 orado river. They were about fully grown, and the leaves of the 

 Salix were entirely gone. 



Hemileuca maia Drury. As will be seen from the above 

 notes, it seems that the female of this species oviposits here on 

 Salix, or other food-plants, in November, the eggs hatch the 

 following spring. Below are notes on the darker larvae, supposed 

 to be maia. 



April 22, 1 89 1. A twig of Populus fremontei was found on 

 college farm, bearing egg-shells of Hemileuca from which the 

 young caterpillars, 2 x / 2 to 3 mm. long, had just hatched and be- 

 gun eating the green leaves. As these were so young, the color 

 could hardly be depended upon. Mr. H. G. Dyar identified 

 them as Hemileuca or an allied form. 



May 16, 1 89 1. Three miles south of Mesilla, near the Rio 

 Grande river, a mass of dark Hemileuca larvae was noticed on a 

 twig of Populus fremontei, and another similar mass on a twig 

 of Salix sp. near by. The larvae held on to the twigs by means 

 of slight but quite strong silken webs, and measured 17 to 20 

 mm. in length. 



May 13, 1892. Some larvae, which agree well in general 

 color and appearance with the above, were found on mesquite 

 (P. juliflora) near the college. They were 1^ to 2 inches long. 

 One larva pupated on top of the earth in a breeding cage, May 

 27. This, with an alcoholic larva, was sent to Dr. Packard, who 

 wrote that they were H. maia. 



July 25, 1892. East of Navajo Springs, Arizona, I found a 

 number of specimens of a large brownish and blackish larva, 

 which may be H. maia, feeding on Artemisia filifolia, a greenish 

 gray sage. They could not be found on the sage after passing a 

 certain very restricted area, though they were numerous where 

 they did occur. It may have been another species. 



Note. I have repeatedly handled the maia and artemis 

 larvae in all stages, without being stung in the least by the hairs. 



