448 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 10 



Megastigmus aculeatus Swed., Introduced into New Jersey from Japan. (Hy- 

 men.) At different times during the past few years, rose growers have complained 

 somewhat, of the failure of Japanese Rosa multifiora seeds to germinate. Upon col- 

 lecting samples of the seeds and keeping them under observation, it was found that 

 they were heavily infested by a member of the Torymidoe, which was later identified 

 by Mr. Girault through the courtesy of Dr. L. O. Howard as Megastigmus aculeatus 

 Swed. The larvaj of this genus are known to Uve in the seeds of plants and C. R. 

 Crosby in "A Revision of the North American Species of Megastigmus" (An. Ent. 

 Soc. Amer., vol. 6, No. 2, pp. 155-170, June, 1913) states that this species was reared 

 from rose seeds at Ithaca, N. Y., and that in the collection of the U. S. National 

 Museum, there is a series of specimens reared from rose seeds imported from Peking, 

 China. He also reared specimens from rose liips received from Germany. In order 

 to determine definitely if the species was being imported into New Jersey from Japan, 

 samples of Rosa mulliflora seeds w^ere taken from nearly every shipment consigned to 

 the State during the spring of 1917. After keeping them nearly fifty days, parasites 

 emerged from all of them about the latter part of May. The larva appears to destroy 

 the entire interior of the seed leaving nothing but the hard outer covering. 



Hakry B. Weiss, 

 New Brunswick, N. J . 



Migration of Danaus archippus. Miss Joanna Carey writes from La Junta, Colo- 

 rado, that on April 26 a "cloud of butterflies" arrived at that place, at about 5.30 in 

 the evening. They seemed to be carried before a very hard wind which was blowing 

 from the east or northeast. Great numbers were to be seen later on the grass, trees 

 and sidewalks. Two specimens sent are both males. 



T. D. A. COCKERELL. 



A Correction. Line 25, page 260, vol. 10, No. 2, Journal of Economic Entomology, 

 should read "larv£B of the three probable parasites" instead of "larvae of the three 

 parasites probably." 



W.M. P. Hayes. 



