103 



the Brockley railway banks ; C. hyalc, from the same place ; 

 very diminutive forms of Vanessa io, Agriadcs coridon, and 

 Aglais urticce, taken during an extremely dry season ; and 

 four diminutive E. cardamincs, taken in the following spring ; 

 Agrias convolvidi, taken at rest on the trunk of a chestnut 

 tree, in Greenwich Park, in i86g, while Mr. West was 

 sheltering from a storm ; Hippotion celcrio, found on a 

 machine in Messrs. Penn's iron foundry, Greenwich, in 

 1865 ; Scsia stellatarnm, taken at Blackheath, where it used 

 to be common ; Algeria cynipiformis, taken from elms in 

 Greenwich Park ; Ai. adiciformis, from Darenth ; Ai,. myopcc- 

 formis, from Greenwich apple trees ; Ai. chrysidiformis, from 

 Folkestone ; Ai. ichncwnonifovniis, from Lee ; a very pale 

 xanthic example of ^4. nrticce taken in 1875; specimens of 

 Deiopcia pulchella, taken in 1862 at St. Margaret's Bay by 

 some Deptford workmen ; a specimen of Spilosoma nrticce, 

 taken by him in 1880, on his door-step in Greenwich ; and 

 a salmon-pink example of Anthroccra filipcndnlcr, taken in 

 Burnt Ash Lane, in 1870. 



Mr. R. Adkin again exhibited the supposed hybrid 

 Aiithrocera JilipendnlcE x achillccc, and read the following note : 



"It may be remembered that early in last year I exhibited 

 a specimen of an Anthrocera, which had been sent to me by 

 Mr. W. Renton, of Morven, as resulting from a pairing that 

 he had observed between a male A. filipcndtdcc and a female 

 A. achillccc ('Proceedings,' 1909, p. 67). Considerable 

 doubt was expressed at the time as to the possibility of a 

 hybrid between these two species, and on a subsequent 

 occasion Mr. Tutt mentioned that, although cross-pairing 

 was not uncommon between some of the Continental 

 Anthrocerids, it had not, in his experience, produced hybrids. 

 I, therefore, thought it very desirable that the genitalia of 

 the specimen should be examined, as it is known that in the 

 case of hybrids these organs are greatly affected. Mr. F. N. 

 Pierce very kindly undertook this examination for me, and 

 his report is as follows : ' I have no hesitation in saying it 

 (the supposed hybrid) is a true filipendidcB in every respect. 

 The points of difference are very great in the two species, 

 and the ' hybrid ' agrees in every respect with filipendnlcc, 

 and in no point with achillece.' He then goes on to say that 

 he has examined the genitalia of a number of known hybrids, 

 and that the signs of hybridization in them are not only 

 well marked but unmistakable ; and that, therefore, this 

 specimen cannot be a hybrid. In these circumstances we 

 have no alternative but to accept the very distinct evidence 



