BRITISH ODONATA IN 1913. 77 



E. South from larvae of Peronea hastiana, October 13th, 1904, 

 and October 21st, 1904, host from St. Anne's, Lancashire. 



M. vexator (Hal.). — Is easily known by the size of the 

 stigma, which is as large or even larger than the first cubital 

 cell, with a considerable pale spot at the inner angle. We are 

 indebted to Morley for redescribing this species,* from speci- 

 mens bred by Keys at Plymouth out of a fungus, together with 

 the clavicorn beetle Diphyllus lunatus (Fab.). Halliday described 

 the female from a single insect, while Marshall, who described 

 its supposititious male, had only a dilapidated specimen before 

 him. In Morley's insects the antennae of the male are 26-jointed, 

 of the female 24, and the recurrent nervure is rejected. 



M. atrator (Curtis).— In August, 1913, C. W. Colthrup sent 

 me from Eastbourne two females which he had captured with 

 three specimens of the hyperparasite Hemiteles areator. The 

 insects were caught while running about on furniture which was 

 infested with the moth Tinea hiselliella, and were evidently 

 searching for the larvae of the lepidopteron. Morley has a 

 female which was also taken indoors. I believe that no specified 

 host has before been cited for this species, and it appears to 

 have been but rarely observed, which seems strange in the case 

 of so beneficial an insect. 



(To be continued.) 



BRITISH ODONATA IN 1913. 



ByW. J. Lucas, B.A., F.E.S. 



(Plate II.) 



Although the spring was an early one, I did not meet with 

 a dragonfly till May 18th, when Pyrrhosoma nymphula and 

 Libellula quadrimacidata, the latter in teneral condition, were 

 taken at the Black Pond, near Oxshott, in Surrey; no other 

 species was seen — not even Enallagma cyathigerum. On May 

 25th the same locality was again visited, when a male and a 

 female of Cordulia cenea were taken, and E. cyathigerum was on 

 the wing, as well as P. nymphula and L. quadrimaculata ; but, on 

 the whole, dragonflies were not very evident in a locality where 

 they are usually so plentiful by this date. 



On June 1st a visit was paid to Frensham Ponds and the 

 swampy ground near them, in the south-west corner of Surrey ; 

 but the weather was dull. However, E. cyathigerum was found 

 to be numerous. There were also a few /. elegans, and a female 

 Agrion puella was taken. One or two teneral examples of 



- Entom. p. 4, 1912. 



