October, '14] SCIENTIFIC NOTES 405 



Eight specimens, Brownsville, Texas; reared by R. A. Vickery from 

 a colony of Pemphigus (probably P. fraxinifoUi) taken from leaves of 

 ash. May 10, 1910. Four specimens, including the type, are depos- 

 ited in the United States National Museum. 



The chsetotaxy of the species is identical with that of others which I 

 have examined, no specific differences appearing in any that I have 

 noticed; "it is as follows: 



Head: post-vertical, oceliar, frontal and vibrissa wanting; vertical 

 two small pairs; one proclinate on middle of bucca. 



Thorax: two pairs dorsocentral, far back, the anterior small; humeral 

 1; notopleural 2; presutural 1; sternopleural 1; intraalar 1 (behind); 

 supraalar 2; scutellar two pairs. Thus the thorax has just 12 bristles 

 on each side of the median line, the head three. 



Scientific Notes 



The Cotton- worm Moth in Colorado. On the night of September 21, 1914, 

 large numbers of moths appeared around the electric lights in Boulder, Colorado. 

 Next morning, the night having been quite cool, hundreds of these insects were 

 found resting on the ground in the vicinity of the lamps. Probably 90 per cent were 

 Heliothis obsoleta Fab., and these consisted principally of var. mnbrosa, with a 

 sprinkling of var. ochracea. The other 10 per cent consisted mainly of Alabama 

 argillacea Htn., which I had never seen in Boulder before. There was a single fine 

 specimen of Erinnyis ello L. The remaining moths appeared to be of local origin. 



Although the specimens were remarkably fresh and perfect, they must have come 

 at least 500 miles. H. obsoleta is a Colorado species, but the great numbers pres- 

 ent, associated with the undoubtedly southern forms, can only indicate a migratory 

 flight.— T. D. A. CocKERELL, Boulder, Colorado. 



News Letter No. 4, of the Bureau of Entomology, is a roster of all officers and men 

 engaged in the work of the Bureau. The number totals 207, divided as follows: 



Administration 8 



Deciduous fruit insect investigations 31 



Cereal and forage crop insect investigations 33 



Southern field crop investigations 19 



Forest insect investigations 15 



Truck crop and stored insect investigations 14 



Apicultural investigations 5 



Tropical and sub-tropical insect investigations 9 



Miscellaneous 



Identification and classification 8 



Health of man 12 



Health of animals 3 



Spread of moths 41 



Field work 9 



207 



