OF WASHINGTON. 19 



Mr. Schwarz suggested the desirability of determining the 

 periodicity of certain of the other native species of Cicadidse 

 for which it was not known. He mentioned especially C. mar- 

 ginata Say, a species which occurs only at rare intervals. 



Mr, Titus said that C. pntnami was probably a 2-year spe- 

 cies. There was one locality in Colorado where it occurred 

 on the even, and another where it occurred only on the odd 

 year. 



March 7, 1907. 



The 2 1 2th regular meeting was held at the residence of 

 Mr. C. L. Marlatt, 1440 Massachusetts avenue, N. W., Presi- 

 dent Hopkins in the chair. The following were present : 

 Members, Messrs. Barber, Busck, Doolittle, Dyar, Fiske, Gill, 

 Hopkins, Howard, Johnson, Knab, Marlatt, Patten, E. F. 

 Phillips, W. J. Phillips, Quaintance, Reeves, Sanders, Sasscer, 

 Schwarz, Titus, and Webster; visitors, Messrs. D. H. dem- 

 ons, C. S. Spooner, C. H. T. Townsend, R. W. Van Horn, 

 and G. P. Weldon. 



The recording secretary read an invitation to the Society to 

 send delegates to the International Zoological Congress to 

 meet in Boston in August. By vote, the president was di- 

 rected to appoint such delegates at his discretion. 



Mr. Schwarz called attention to the rediscovery of that 

 peculiar beetle known under the name Ignotus (cnigmaticus, 

 specimens having been recently received from Mr. C. T. Brues, 

 who found them in a box of insects in the Milwaukee Public 

 Museum. Mr. Frederick Blanchard, who has females of this 

 insect, has discovered that it belongs to the family Dermes- 

 tidje. The original home of this species must still remain in 

 doubt, since it is hardly indigenous to our country. The his- 

 tory of this remarkable insect was recalled, and some discus- 

 sion followed as to whom to credit the name. It was first col- 

 lected by Mrs. A. T. Slosson, who submitted it to several 

 specialists, none of whom had ever seen it before. The name 

 was suggested by Doctor Dyar, and used by Mrs. Slosson in 

 a short published note, which, it was held by Doctor Dyar, 



