8672 



Entomological Society. 



in the United States, which are figured in Doubleday's * Genera, but undescribed ; 

 they are Argynnis Astarte, Melitaea Cbalcedon, M. Anicia and Timetes Coresia. 



"The heraipterous papers are two in number; a short descriptive paper by P. R. 

 Uhler on some new species, including a Capsus, which in some seasons is very plentiful 

 on the Robinia Pseudacaeia; and a highly philosophical paper on the genera of 

 Aphidae found in the United States, by Benjamin D. Walsh. In allusion to the pro- 

 bability of differences in the larval form of Aphides being correlated with the variation 

 of the food-plant, and not necessarily implying that the two are specifically distinct, 

 Mr. Walsh cites the case of the larvae of Datana ministra (one of the Notodontidae), 

 which are always vittate with yellow, and with the upper surface of the first (second) 

 segment yellow, when they feed on oak-apple, &c. ; but when these larvae feed on 

 hickory or walnut they are entirely black, and yet between the moths produced from 

 them there is no appreciable difference. Mr. Walsh in his summary tabulates the 

 previously described species of Aphidae in the United States as fifty-seven in number, 

 and the new species described in this paper as thirteen, making a total of seventy. 



"The only dipterous paper is on the characters of the larvae of Mycetophilidae, by 

 Baron R. Osten-Sacken. This paper contains • 1st. A comparative description of the 

 external anatomy of the principal genera in their larval form. 2nd. A brief account 

 of what is known about the habits of each genus. 3rd. A list of references, with a short 

 notice on the importance of each.' 



" The only neuropterous paper is a short one by Mr. Buckley, descriptive of two new 

 species of Termites. Why the Neuroptera should have attracted so very little attention 

 is not apparent, but probably some important contributions on that order will shortly 

 appear, and then the students of all the principal Orders of insects will find matter to 

 interest them in the 'Proceedings of the Entomological Society of Philadelphia.' 



" I annex a classified list of the papers already published, with references to the 

 pages where they will be found." 



COLEOPTERA. 



"Catalogue of the Cicindelidae of North America," by E. T. Cresson. Pp. 

 7—20. 



" Notes on the Habits of some Coleopterous Larvae and Pupaj," by G. H. Horn. 

 Pp. 28—30. 



"Observations on the Habits of some Coleopterous Larvae and Pupae," by G. H. 

 Horn. Pp. 43, 44. 



" Catalogue of the Longicorn Coleoptera taken in the vicinity of Philadelphia," by 

 J. H. B. Bland. Pp. 93—101. 



" Descriptions of some Larvae of North-American Coleoptera," by Baron R. Osten- 

 Sacken (with a plate). Pp. 105—130. 



" Descriptions of some new North-American Coleoptera," by G. H. Horn, M.D. 

 Pp. 187—188. 



" On Winter Collecting," by H. T. Fay. Pp. 194—198. 



"Descriptions of several supposed new Species of Cerambycidae in the Collection 

 of the Entomological Society of Philadelphia, with Observations on some already 

 Described,'' by J. H. B. Bland. Pp. 267—276. 



Neuroptera. 



" Descriptions of Two New Species of Termites from Texas," by S. B. Buckley. 

 Pp. 212—215. 



