VARIETIES OF PERONEA CRISTANA. 265 



Anax imperator was sighted on this day in the same neighbour- 

 hood. On July 23rd, Sijmpetrum striolatum and .Eschna grandis 

 were met with at the North Downs near Albury. 



During a stay in the New Forest from July 30th to 

 September 7th there were seen : — P. tenellani, with its var. 

 erythrogastrum, 0. ccerulesccns, Platijcnemis pcnnipes, P. nym- 

 phula, I. elegans, Sympetrum scoticum, Lestes sponsa, S. striolatum, 

 C. virgo, Cordulegaster annulatus, Agrion mercuriale, L. depressa 

 (August 8th), E. cyathigenuii, A. puella, .EscJina mixta, A. im- 

 perator. The date, August 8th, for L. depressa is a late one for 

 the species. A. mercuriale was found to have a more extended 

 range along Oberwater Stream than was previously supposed. 



My last record for the season was S. striolatum, S. scoticiun, 

 .Eschna juncea, .E. grandis and E. cyathigerum at the Black 

 Pond on September 12th. 



I should add that I received C. splendens, taken at Alice Holt 

 Wood on June 13th by M. Warriner, E. cyathigerum from 

 Nethy Bridge in July (D. Sharp), and a note of ^. mixta taken 

 by F. Enock in a garden in Tufnell Park Road, London, about 

 9.20 a.m. on August 21st. Whence did the last come, as Mr. 

 Enock had not himself bred a nymph during the season? 



28, Knight's Park, Kingston-on-Thames. 



NOTES ON THE VARIETIES OF PERONEA CRIS- 

 TANA LATELY IN THE COLLECTION OF THE 

 LATE MR. J. A. CLARK. 



By Sydney Webb. 



(Continued from p. 201.) 



Cristana Group. 

 A. Button conspicuous. 

 Fore wing unicolorous brown to black, with white, brown, or 

 cream-coloured button, and pure white or cream vitta. 



Cristana, Fab. nee Dup. — [Is too well known to require 

 notice. Distinguished by its snow-white button and vitta. It 

 would appear that the ground colour of the wings is at the 

 present day becoming darker than formerly.] 



Nigrocristana, Clk. — Readily separated from the last by the 

 central tuft of scales being black, brown, or rusty brown, 

 although Clark mentions black only. There are no subsidiary 

 small tufts of white scales. This form appears to be in almost 

 every collection mixed with the last. 



Fuscana, Clk. — Is identical with nigrocristana, but slightly 

 lighter in hue. His type specimen does not agree with his 



