290 ENTOMOLOGICAL SOCIETY 



the outbreak followed a series of dry seasons, as was the case now. 

 He thought that such a series of dry seasons was necessary for so 

 extraordinary an increase of the species, and that there had prob 

 ably been no such conditions prevailing during the interval be 

 tween the two outbreaks. When the season was dry the larvas 

 were much more free from fungi, of course. 



Dr. Howard stated that the Norwegian officials had sent to the 

 Division of Entomology, U. S. Department of Agriculture, for 

 the locust SporotricJnim, as they wished to see if it could be used 

 against the pine bombyx. 



Dr. Dyar reported some early dates for the hatching of mos 

 quito eggs. Eggs of Culex canadcnsis, laid at Center Harbor, 

 New Hampshire, last August, and kept by him over winter at 

 Washington, had hatched on the 9th of March. Mr. J. Turner 

 Brakeley, at Lahaway, New Jersey, had found larvae of the same 

 species, under the ice, some time in February. 



Speaking of mosquitoes, Mr. Banks reported that he had 

 taken Megarhinus portoricensis at Washington last August, and 

 Mr. Kotinsky reported having collected M. rutilus along Rock 

 Creek, in the District of Columbia, during the past summer. 



Mr. Banks exhibited a nest of the purse-web spider (Atypus 

 abboti Hentz) which he had found at Falls Church. The species 

 is rare here, though known as far north as Massachusetts. 



Upon invitation, Dr. Holland gave an account of the insect 

 collections in the Carnegie Museum in Pittsburg, and told of the 

 work which was being done-there and of that which was contem 

 plated. In reply to a query he stated that the "Moth Book" 

 which he was preparing would be published soon, and would 

 contain illustrations of 1,800 different moths. 



Dr. Dyar then presented the following paper : 



NEW NORTH AMERICAN LEPIDOPTERA WITH NOTES ON 



LARV/E. 



By HARRISON G. DYAR. 



In Bulletin 52, U. S. National Museum, a few new forms were 

 briefly characterized. It is proposed to give fuller descriptions 

 of them here, together with certain notes that seem worthy of 

 record. 



Parnassius clodius Menetries. 

 Variety altaurus, n. var. 



