xlii 



Part II. — " On the structure of the Lanipyrida, with refe- 

 rence to then- phosphorescence," by Kev. H. S. Gorham. " Notes 

 on the coloration and deyelopmenfc of Insects," by Peter Cameron. 

 " On Cetonia aurata and Protaetia Bensoni," by Prof. Westwood. 

 " Materials for a revision of the Lamjyyridce," by Eev. H. S. 

 Gorham. " On two gynandromorphous specimens of Cirrocliroa 

 Aoris, &c.," by Prof. Westwood, 



Part III. — " A list of Diurnal Lepidoptera collected in the 

 Sierra Nevada of Santa Marta, Colombia, and its vicinity," by 

 Messrs. Godman and Salvin. " On the genus Colias," by H. J. 

 Elwes. "Notes on exotic Ehynchota, with descriptions of new 

 species," by W. L. Distant. 



Part IV. — " On the Asiatic Lepidoptera referred to the genus 

 Mycalesis ; with descriptions of new genera and species," by 

 F. Moore. " On the Birprcstiche from Madagascar," by C. 0. 

 Waterhouse. " Observations upon certain species of the Lepi- 

 dopterous genus Tcrias, with descriptions of hitherto unnamed 

 forms from Japan," by Arthur G. Butler. " Synopsis of British 

 Heterogyna and Fossorial Ilymenoptera," by Edward Saunders. 

 " On a collection of Hemiptera from Japan," by John Scott. 

 "Description of a new species of the anomalous genus Polyctenes," 

 by C. 0. Waterhouse. 



On the present occasion, however, I will not dwell on the 

 researches of our own members. 



Quitting then our own contribution to Entomological science, 

 we are indebted to Dr. Grenadier for a very interesting and 

 important work* on the vision of insects, portions of which have 

 already appeared in preliminary communications. He points out 

 the curious fact that the different simple eyes in the same spider 

 differ in some species considerably in their structure. 



He divides the compound eyes of insects into three types : — 



Acone eyes, in which the crystal cone is not present, but is 

 represented throughout life by distinct cells ; 



Pseudocone eyes, in which there is a special conical and 

 transparent medium ; and, lastly, 



Eucone eyes, with true crystalline cones. 



* Untersucliuugen uber der Seliorgan der Arthropoden. 



