78 THE ENTOMOLOGIST. 



May 12tli (H. -J. Watts), and further specimens were taken in 

 Huntingdonshire on June 19th (at Hartford), and June 27th (at 

 Eamsey). On May 26th we took a male of Agrion puella at 

 Sudbury, Middlesex. Erythromma naias was met with near 

 Huntingdon on June 19th, 21st, and 22nd. A female taken on 

 the last-named date had the left mid-leg re-grown from the base. 

 The right mid-leg also had the tarsus redeveloped, and possessed 

 only a single claw. It is interesting to recall here another 

 specimen of the same species in which we found a regenerated 

 mid-leg (Entom. xl. p. 213 (1907)). At Byfleet Mr. Watts 

 obtained one specimen of Pyrrhosoma nympkula var. female 

 mdanotum on May 12th, and another on June 9th. We do not 

 recollect any previous occurrence of this form in Surrey. In 

 view of the great extent to which the female of P. nympkula was 

 observed to vary at Byfleet in the matter of abdominal colora- 

 tion, Mr. Watts furnished us with a good number of specimens 

 from that locality, taken on May 26th and June 9th. By 

 arranging these specimens in a long series, with the extremely 

 bronzed form (var. melanotum) at one end, and the extremely 

 crimson form (var. fidvipes) at the other end, we obtained an 

 almost complete set of intermediate forms, with the normal one 

 occupying about the central position. It would appear, there- 

 fore, that the female of this species is polymorphic rather than 

 trimorphic, and that the forms called melanotum [ind falvipes are 

 not really well-defined varieties, but are merely the extreme 

 expressions of variation in opposite directions. 



At Fittleworth, Sussex, a female of Gomphus vulgatissimus 

 was secured by Mr. Watts on May 19th. At the time of capture, 

 he tells us, it was quite teneral, but it assumed the fully adult 

 condition after being kept alive in captivity for a few days. 



At Byfleet, on May 12th, Mr. Watts found numerous nymph- 

 skins of Brachytron hafniense left clinging to freshly grown 

 vegetation. Of eleven skins which we were given an opportunity 

 of examining, five had belonged to males and six to females. On 

 July 12th the species was met with again by the same collector 

 at Potter Heigham, Norfolk. From other sources we received a 

 male of Mschna grandis, captured at Sudbury, Suffolk, on 

 August 4th, and a female of /E. cyanea, taken atHorsenden Hill, 

 near Sudbury, Middlesex, on August 1st. Of jE. isosceles we 

 have seen two slightly worn males from Stalham, Norfolk, one 

 taken on July 15th, and the other on July 16th (Watts). 



On May 29th we found Cordulia cenea flying in some numbers 

 on Oxshott Heath, Surrey, far away from any sheet of water, 

 and one individual was still on the wing as late in the afternoon 

 as 5.30. The next day males were captured, both on the Heath 

 and near the Black Pond. 



A female of Orthetrum cccndescens was obtained at Uffculme 

 on June 30th (Laidlaw). 



