INSECTS 



has been met with on Esher Common, By- 

 fleet Canal, Ockham Common and Chobham 

 Common (Lucas), Weybridge (J. E. Tarbat). 

 Its variety, pnenubila, Newm., is fairly com- 

 mon : the typical, absolutely unsuffused form, 

 does not often occur. Both species of the 

 genus Orthetrum occur, though neither species 

 has been met with frequently. Localities for 

 0. ctsrulescens, Fabr., are Chobham Common 

 (E. Vincent), Bisley (A. Ficklin, jun.) and 

 Weybridge (Stephens, 1842); for 0. cancel- 

 tatum, Linn., Ockham Common (Briggs), 

 Merton (J. S. Brocklesby), near New Maiden 

 (Lucas), Chobham Common (Vincent), near 

 Byfleet, probably (F. A. Walker). 



Corduli'mte. Cordulia <enea y Linn., is early 

 on the wing, and has been met with at 

 Esher Common, Ockham Common and By- 

 fleet Canal (Lucas), Bookham Common 

 (Briggs). 



Gomphinie. Gomphus vulgatissimus, Linn., 

 appears to be a Thames insect, and has 

 occurred at Walton, 1900 (A. B. Higgs), 

 Weybridge, 1871 (McLachlan). 



Cordulegasterinte. So conspicuous an in- 

 sect as Cordulegaster annulatus, Latr., must be 

 uncommon, or more than two occurrences 

 would have been noticed at Ottershaw (A. 

 Reed), and a straggler on Esher Common, 

 1900 (Lucas). 



jEschninee. The truly majestic dragonfly, 

 Anax imperator, Leach, is not uncommon in 

 the county, and has occurred, sometimes 

 plentifully, at Esher, Chobham and Bookham 

 Commons (Lucas), Ockham Common (Briggs), 

 Byfleet Canal (Tarbat), Crooksbury Common 

 and near Worpleston (E. B. Bishop) ; it is 

 comparatively seldom captured. The spring 

 dragonfly, Brachytron pratense, Mttll., has been 

 taken at Byfleet Canal, Ockham Common, 

 Esher Common and the Mole at Esher (Lucas), 

 and at Leatherhead, Bisley and Egham (Briggs). 

 Of the genus jEschna four of the six British 

 species have been taken in Surrey. /E. mixta, 

 Latr., is generally a very uncommon species, 

 and till a year or two ago but some eight or 

 nine captures were known in England. Dur- 

 ing the last two or three seasons more have 

 been noticed, and in 1900 it was decidedly 

 common in places in the southern counties. 

 Surrey localities are Esher Common, Ock- 

 ham Common and near Elstead (Lucas), near 

 East Grinstead (Burr), Upper Norwood (S. 

 Stevens). A nearly allied species, &. juncea, 

 Linn., though not common, has been taken 

 on Esher and Ockham Commons (Lucas), 

 near Elstead (Bishop) and Weybridge (Tar- 

 bat) : it seems to have a liking for ponds in 

 fir woods. Mi, cyanea, Mtill., and /E. grandis, 

 Linn., are both widely distributed through 



the county, and to give localities would be 

 superfluous. 



Calopterygina. Both species of the genus 

 Calopteryx are found in the county, and 

 occasionally, but not often, in or near the 

 same locality. C. virgo, Linn., has been 

 taken at R. Mole near Leatherhead (W. J. 

 Ashdown), near Virginia Water (Tarbat), 

 Chobham Common (Vincent), near Farnham, 

 Puttenham Common and Crooksbury Com- 

 mon (Bishop). C. splendens, Harr., is more 

 common, localities being R. Mole at Esher, 

 near Byfleet, Wisley, Newark Abbey, Ock- 

 ham Common (wanderers), near Weybridge, 

 Esher Common (wanderers), near Send (Lucas), 

 White Falls Leatherhead (Briggs), near Farn- 

 ham (Bishop), Walton-on-Thames (H. E. 

 Annett). 



AgriowTue. More localities could no doubt 

 easily be found for Lestes sponsa, Hansem., than 

 Esher Common (one specimen), Ockham 

 Common and near Elstead (Lucas), Wendle- 

 sham (Tarbat), Chobham Common (Vincent). 

 Platycnemis pennipes, Pall., has been met 

 with in several localities, but generally not 

 plentifully : it seems to like flowing water. 

 Specimens have been captured at Newark 

 Abbey, near Weybridge, and Esher Com- 

 mon, one specimen only at the last (Lucas), 

 Ockham Common, near Cobham, and 

 Mickleham Downs (Briggs). Erythromma 

 naias, Hansem., is perhaps not usually a 

 common dragonfly, but in Surrey it occurs 

 plentifully at the Byfleet Canal (Lucas), and 

 may be taken on Ockham Common (Lucas) 

 and Chobham Common (Vincent); singularly 

 enough a single specimen has been taken on 

 Esher Common (Lucas) and in Richmond 

 Park (Lucas). The common insect, Pyrrho- 

 soma nymphula, Sulz., is no doubt distributed 

 throughout the county in suitable localities, a 

 considerable number having been already re- 

 corded. Its congener, P. tene/lum, Vill., is 

 plentiful on Esher Common (Lucas) : it used 

 to be taken at Weybridge (McLachlan), and 

 has been reported from Merton (Brocklesby). 

 Ischnura elegans, Lind., is well distributed, and 

 localities need not be specified. Agrion pul- 

 chel/um, Lind., does not seem to be a common 

 insect in Surrey. It occurs in a restricted 

 spot by the Byfleet Canal (Lucas), and 

 McLachlan has taken it commonly at Runny- 

 mede. A. puella, Linn., on the other hand 

 is well distributed, while Enallagma cyathi- 

 gerum, Charp., is perhaps even more common, 

 it being, moreover, usually in swarms where 

 it does occur. Though so common, it is an 

 interesting little species, from the fact that it 

 remains a long time on the wing and is sub- 

 ject to a good deal of variation in markings. 



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