172 ENTOMOLOGICAL SOCIETY 



Prof. Riley announced the breeding of perfect females of 

 Margarodes and stated that this rearing showed the synonymy 

 of Margarodes with Porphyrophora. The female is active and 

 crawls out of the ground. The male, however, has not yet been 

 reared. Further confirmation of the ideas which he expressed 

 concerning the formation of the scale at the last meeting has been 

 found as pores of a specialized character have been observed 

 through which the scale material is probably secreted. Two 

 forms of the female have been observed, the one not forming a 

 nidus of wax-like secretion ; the other encloses itself like a 

 mealy-bug and lays eggs. He has also received specimens of 

 another species from South America since the last meeting. 

 Some further discussion ensued on the male of Porphyrophora 

 and the probable male of Margarodes. 



OCTOBER n, 1894. 



President Ashmead occupied the chair, and there w^ere also 

 present Messrs. Riley, Schwarz, Waite, Chittenden, Linell, 

 Stiles, Hubbard, Patten, Marlatt, Heidemann, Marx, Dodge, 

 Coquillett, Mann, Gill, Fernow, and Howard. 



The following new pembers were elected : Active, J. D. 

 Patten, 3033 P St., West Washington; corresponding, C. E. 

 Chambliss, University of Tennessee, Knoxville, Tennessee, and 

 Dr. A. B. Griffiths, 12 Knolles Road, Brixton, London, Eng 

 land. 



Mr. Marlatt presented the following note : 



ON TfaE FOOD-HABITS OF ODYNERUS. 

 By C. L. MARLATT. 



Early in October, 1894, while making some observations on 

 certain insects affecting theblack locust, Robinia pseudacacia, 

 my attention was attracted to the peculiar actions of a small spe 

 cies of Odynerus. The insect was observed to examine, appar 

 ently with some care, the sewed-together leaves of the locust, 

 which contained, or had contained, the larvae of Pempclia 

 gleditschiella. The little wasp eventually rested for a moment 

 on the upper surface of one of these tied-together leaves, seemed 

 to make a careful examination, and then immediately ran to the 



