240 ENTOMOLOGICAL NEWS. [May, 'oS 



darker than normal at the margins. Its structure and its com- 

 panionship with plenty of other myrina are all that identify it. 



R. P. Dow, Recording Secretary. 



At the regular meeting of the Feldman Collecting Social 

 held March 18, 1908, at 1523 S. I3th St., Philadelphia, 14 

 members were present, Mr. Englehardt of Brooklyn, visitor. 



Professor Smith reported on the study made of the geni- 

 talic structure of Macrobasis ochrca. He finds that there is a 

 distinct correlation between males and females, so that co- 

 pulation is rather difficult between specimens of markedly dif- 

 ferent sizes. A small male can copulate with a large female ; 

 but it would be difficult for a large male to copulate with a 



small female. The male organs are furnished with a hook and 

 in copulation the lower part of the terminal segment of the 

 male slips under the lower part of the last abdominal segment 

 of the female. The hook engages a slight thickening on the 

 inner rim of the female segment and the lock is complete. It 

 is almost impossible to get the specimens apart by a direct pull. 

 A figure was exhibited which brought out these characters 

 more clearly. 



Professor Smith also read an interesting letter from Dr. 

 S. S. Haldeman dated March 18, 1864, and addressed to Mr. 

 J. H. Blakely, professor in W. F. Collegiate Institute of Wil- 

 mington, Del., giving details of how to collect and mount 

 insects, same being explained by sketches. 



Mr. Englehardt made some remarks on the New York and 

 Brooklyn Societies and exhibited a box of Memythrus show- 



