OF WASHINGTON. 143 



Mr. Burke showed a rather rare tussock moth from the 

 Yosemite National Park, Cal., Notolophus oslari Barnes. He 

 stated that investigation proved to him that this species was 

 responsible for the bare tops frequently seen in that portion of 

 California in the California white fir (Abies concolor). From 

 larvae kept under observation were reared Chalcis ovata Say, 

 Tachina tnella Walk., and some braconids. A comparison of 

 the egg-masses of this species with those of three other well- 

 known tussock moths, namely, the white-marked tussock moth 

 (Hemerocampa leucostigma S. & A.), the gipsy moth (Por- 

 thetria dispar L.), and the rusty tussock moth (Notolophus 

 antiqua L.) is interesting; whereas the white-marked tussock 

 moth surrounds its egg-mass with froth, and the gipsy moth's 

 egg-mass is covered with hair, that of Notolophus oslari is 

 surrounded with both froth and hair, while that of Notolophus 

 antiqua is bare. Doctor Dyar stated that Notolophus oslari 

 was described from Colorado and this California record of 

 Mr. Burke was new ; both the larva and the female were unde- 

 scribed. Mr. Burke stated that the larvae strip the fir trees 

 from the top down for a distance of about 10 feet, thus destroy 

 ing the seed crop. Doctor Howard suggested that Phnpla 

 inquisitor Scop, be introduced into California from the Eastern 

 United States to parasitize the Notolophus. Doctor Hopkins 

 said that he found Notolophus oslari ovipositing, in October, 

 1905, on the trunks and branches of fir trees which had been 

 defoliated by the larvae, near Colorado Springs, Colo., and on 

 visiting the same locality the following June he found that the 

 eggs were hatching. Some of the egg masses were collected, 

 which later yielded a large number of egg parasites. Doctor 

 Howard remarked that these egg parasites found by Doctor 

 Hopkins might prove useful for introduction into the East to 

 combat the white-marked tussock moth, the gipsy moth, and 

 the brown-tail moth (Euproctis chrysorrhcea L.). 



Mr. Schwarz pointed out that this California record for a Colo 

 rado species was an illustration of the fact that the faunas of the 

 eastern slope of the Sierra Nevada Mountains and the western 

 slope of the Rocky Mountains are closely related. The real 

 Pacific fauna is that of the Coast Range alone. Many persons, 



