352 



on the thorax and certain radiate and chitinous bodies in the receptaculum seminis. 

 The remarks were illustrated by large figures. He also spoke of the resemblance of 

 Pronuba synthetica to certain saw-flies. Specimens of the insects described were ex- 

 hibited. Professor Eiley's second paper was read by title only and was presented for 

 publication. The discussion of these papers was participated in by Messrs. Howard, 

 Marlatt, and Stiles. Professor Riley also presented a paper on "Coleopterous Larvae 

 Avith Dorsal Appendages," in which he described the larva of various species of Mor- 

 dellistena which have rows of tubercles on the back which facilitate moving in the 

 hollows of plants and the larger bvtrrows of other insects. He also described similar 

 tubercles in certain C'erambycid larvte. Discussed by Messrs. Smith and Schwarz. 

 Mr. Doran read a paper entitled " On the Heat Produced by Sylvanus cassia'," in which 

 he recorded some observations which he had made on the amount of heat produced 

 by these beetles in meal, but offered no definite explanation of the phenomenon. 

 Discussed by Messrs. Marlatt, Riley, Austin, and Schwarz. 



Nathan Banks, 

 Recording Secretary. 



Tharsday, May 4, 1892. — Nineteen persons present. Prof. H. E. Summers, of Cham- 

 paign, 111., was elected a corresponding member of the society. 



Mr. W. H. Ashmead presented some -'Notes on the genus Enicocephalus, Westw." 

 Bibliographical and critical notes were given and the announcement was made of 

 the discovery also of a new species in Utah by Mr. E. A. Schwarz. The genus can 

 not be included in any of the present subfamilies in the Reduviidse, to which it be- 

 longs, and the new subfamily Enicocephaliuie was erected for it. The new species 

 was named Enicocephalus schwarzii. Discussed by Messrs. Schwarz, Riley, Ashmead, 

 Hubbard, and Heidemann. 



Mr. Mally read a paper on Micromus insijndus, pointing out some observations on 

 the food and life-habits of this Neuropteron made in the South, where he found it 

 feeding on Aphides. Discussed by Messrs. Ashmead and Riley. 



Mr. Howard presented a note on " The Hibernation of Carpenter Bees," showing 

 that males as well as females winter over. Discussed by Messrs. Riley, Ashmead, 

 Hubbard, Marlatt, and Howard. 



A paper by Dr. Bergroth, of Tammerfors, Finland, entitled "Notes on Nearctic 

 Aradid» " was read by the Corresponding Secretary, to whom it had been sent for 

 publication in the Proceedings of the Society. 



Mr. F. M. Webster had forwarded a paper for presentation at this meeting of the 

 Society on "The Food-plants of the Lixi." The communication gave a review of the 

 knowledge of the habits in this respect of this genus of beetles, both of foreign and 

 American species. Discussed by Mr. Schwarz. 



Mr. Hubbard presented a note on the larva of Amphizoa, and gave a resume of the 

 disposition of this anomalous insect in systematic classification by various authors, 

 together with the arguments adduced in support of the diverging views. He pre- 

 sented drawings of the larva and described its habits. The communication was dis- 

 cussed at some length by Mr. Schwarz and also briefly by Messrs. Ashmead, Gill, 

 Riley, and others. 



Mr. Masius gave his recent experience with the poisonous bite of Benacus grisens. 

 In handling specimens of this insect he had received a severe sting on the hand which 

 proved to be very painful. The pain and swelling increased for two or three days, 

 and became so troublesome that a physician was consulted. In five days the trouble 

 had about entirely disappeared, although at the time of the meeting the injured 

 part was still sore. Discussed by Messrs. Howard, Ashmead, Riley, and others. 



C. L. Marlatt, 



Bee. Secretary, pro tern. 



