VI MONTHLY PROCEEDINGS. 



Bulletins 10-12 of the Division of Entomology, U. S. Department 

 of Agriculture. From Prof. C. V. Riley. 



Transactions of the Entomological Society of London, 1886. From 

 the Society. 



Entomologist's Monthly Magazine, May, 1887. From the Con- 

 ductors. 



Biologia Centrali- Americana : Coleoptera, vol. i, pt. 2, pp. 737- 

 744, pi. 19 ; vol. ii, pt. 1, pp. 17-56, pi. 2. Hymenoptera, pp. 377- 

 400, pi. 16. Heterocera, vol. i, pp. 201-224, pi. 22-23. Diptera, 

 pp. 177-216, pi. 3. Acaridea, pi. 4-6. By purchase. 



Le Naturaliste Canadien, vol. xvi. No. 10. From the Editor. 



The Custodian re[)oi*ted an arrangement of the Coleoptera as far 

 as the Cucujidse in the list. 



Dr. Horn spoke of the species of Lachnosterna, alluded to their 

 superficial similarity and indicated the importance of the sexual 

 characters of the males in the separation of species. The more im- 

 portant were illustrated by sketches on the blackboard. 



Joseph G. McFarland was received as an associate member. 



June 13, 1887. 

 Director Dr. Horn in the chair. 



The following additions to the Library of the American Entomo- 

 logical Society were announced : 



Proceedings of the Boston Society of Natural History, 1887, sig. 

 21. From the Society. 



Bulletin of the Essex Institute, vol. xviii, Nos. 7-12. From the 

 Institute. 



Canadian Entomologist, vol. xix, No. 6. From the Editor. 



Entomologist's Monthly Magazine, June, 1887. From the Con- 

 ductors. 



Proceedings of the Zoological Society of London, 1886. From 

 the Society. 



Fitch's Noxious and Beneficial Insects of New York, Reports 

 1-9. From H. C. Wilt. 



Verhandlungen des Naturhistorischen Vereines der preussischen 

 Rheinlande, 1886, part 2. From the Society. 



The Publication Committee reported in favor of a paper entitled : 



Studies of North American Chalcididee, with descriptions of new 

 species, by William H. Ashmead. 



