12 B. C. ENTOMOLOGICAL SOCIETY 



ascendant in the ratio of 60.2% to 38.9%. On this date many specimens 

 were taken in copula. 



The marked discrepancy between these two sets of figures appears 

 at first glance to be inexplicable. It is just probable, however, that the 

 figures resulting from rearing the adults, represent approximately the 

 actual superiority in total numbers of the females over the males. On 

 the date that the collection was made at Westholrne, there were com- 

 paratively few adults to be seen. When one adds to this the fact that 

 the females emerge in larger numbers before the males appear and that 

 they die off soon after laying their eggs, the greater proportion of the 

 later-emerging males towards the end of the adult season on June 1, 

 is readily accounted for. 



The same male may copulate with several different females. 



Explanatory Note. In the original paper, to be published in the 

 Annals of the Entomological Society of America, full and detailed 

 descriptions have been given of the egg, larva, head-capsule and mouth- 

 parts of the larva, the pupa and adults, together with illustrations in each 

 case. As the presentation of these descriptions from a read manuscript 

 would be rather tedious, I have thought it best not to attempt to exhaust 

 the patience of the members by including them in this paper, which your 

 President has kindly asked me to send. I have, however, had photo- 

 graphs made of my drawings, and these, I think, will explain the salient 

 features of the different stages of the species. 



I should like to say here that Mr. W. Downes, one of the Society's 

 members, has the hibernating larvae under his able care, and from his 

 last letter, I understand that they are hibernating in good condition. 

 With his continued assistance, I hope to be able to determine the exact 

 number of larval moults when these larvae commence feeding again in 

 the spring. The larvae of the closely allied genus and species Liogma 

 glabrata have been stated by Dr. Mueggenberg in an admirable paper 

 published in 1901, to have probably eight moults, and this is the number 

 determined for Phalacrocera replicata, also belonging to the Cylindro- 

 tomini, by Bergtsson. Both of these species are European. 



