﻿30 THE ENTOMOLOGIST. 



secarch at the right season would be rewarded. It occurs in the 

 neighbouring counties of Northants. and Beds.] 



5. A. flava, Briinn. {thaumas, Hufn. ; linea, ¥.). This 

 Skipper is at its best from the middle to end of July, when I 

 have seldom visited the ground where it occurs, as a rule rather 

 sparsely compared with A. comma. It seems, however, to be 

 generally distributed from the Wycombes to Dra.yton-Beauchamp. 

 Mr. Warren reports it common, July 18th, 1908. 



Earliest date observed, July isth, 1899 ; latest, August 

 21st, 1909. 



Lyc^enid^. 



6. Chri/sophanus jMaas, L. Bather irregular in relative 

 abundance. In some years an undoubted third brood. I take 

 the ab. caruleopunctata, Stgr., not infrequently. 



(a) gen. vern. Earliest seen, May 9th, 1912. 



{h) gen. csst. Earliest seen, July 8th, 1899. 



(c) gen. auctumn. First seen, September 27th ; last seen, 

 October 9th, 1913 : but no doubt in this year it was fly- 

 ing much later, as I saw it in Middlesex into November. 



7. Cupido minimus, Fssl. For some years I did not find the 

 limited locality where this butterfly occurs in the part of the 

 Chilterns then known to me. Here the food-plant, Anthyllis 

 vidneraria, grows in some abundance, and I usually come across 

 a fair number of examples. Mininnis is distributed locally from 

 one end of the region to the other, and Mr. A. J. Spiller reports 

 a partial second emergence in the west, in 1914. This I 

 have never noticed in Bucks., but I had no opportunity to 

 visit the ground in the hottest of all recent summers, 1911. 



Earliest date observed (a single male). May 22nd, 1914 ; 



latest, July 2nd, 1908. (To be continued.) 



Note. — I shall be much obliged if collectors who are acquainted 

 with the butterflies of this region will communicate with me. 



ON THE HYBRIDS OF THE GENUS OPOEABIA, 

 WITH SOME NOTES ON ITS MICROGENES. 



By J. W. H. Harbison, B.Sc. 



(Plate I.) 



(Continued from p. 6.) 



This acceleration of development is not always found to 

 result in degenerate germ cells,* and therefore the above 

 suggestions are not a complete explanation. In this case the 

 observation is not without its value in suggesting the possible 



* Such as I have found in rearing Drepana rebeli = D. falcula x D. 

 curvatula. 



