May, 1905.] Life History Notes on Apion nigrum. 
347 
Specimens reared in this jar were identified as .4. nigrum by 
Mr. E. A. Schwarz, of the Bureau of Entomology, Washington, 
D. C. 
The trees were again visited on September 18th and although 
they had been full of bloom in May, diligent searching failed to 
reveal a single seed pod that had matured, so thorough had been 
the work of the insects. 
Fig. I. Larva, full-grown. 
Fig. 2. Pupa, vei.tral view. 
Fig. 3. .\dult. 
Fig. 4. Unopened bud showing opening through which adult emerged. 
At McArthur, Vinton County, the curculio while not as plen- 
tiful as at Marietta was found on nearly every black locust tree, 
generally but one or two in a place, however. On June 2d a 
female was observed busily engaged drilling a hole in the gall- 
like, rolled up edge of a locust leaf, probably produced by the 
