264 THE ENTOMOLOGIST. 



of about 50° with base of eye ; last joint of maxillary palpi 75 fj., as 

 long as the two before put together ; ocelli large ; facial foveas linear 

 grooves, about 190 /x long ; antennae formed essentially as in Eiiry- 

 glossella, the fiagellum very minutely bristly ; second joint pyriform ; 

 joints three to eleven broader than long ; sculpture of head, thorax, 

 and abdomen as in Eurycjlossella ; claws simple (bidentate in Eiiry- 

 glossella), pulvillus large ; thick curved bristles on small joints of 

 anterior tarsi ; hind spurs orange, thick, spinulose, or denticulate on 

 both margins ; two submarginal and three discoidal cells ; marginal 

 cell like that of Eari/glossella, about 510 long ; first submarginal 

 410 long ; second su]:)marginal 120 long below and 90 above, its depth 

 about 70 ; first recurrent nervure to first transversocubital 35 ; second 

 recurrent reaching apical corner of second submarginal ; basal ner- 

 vure on first discoidal strongly arched ; length of first discoidal 425 ; 

 basal nervure falling about 70 short of transversomedial. 



Yei'v near to E. semipurpurea, CklL, but smaller, with diffe- 

 rently coloured legs, &c. 



BEITISH ODONATA IN 1909. 

 By W. J. Lucas, B.A., F.E.S. 



But little of interest in connection with the British Odonata 

 came to my notice in 1909. The season certainly commenced 

 early, for specimens of Pyrrhosoma nymphula were secured by 

 Mr. B. Piffard near Brockenhurst, in the New Forest, as early as 

 April 22nd. I have no further record, however, till May 8th, 

 when Libellida quadrimaculata, in teneral condition, was taken 

 at the Black Pond on Esher Common, Surrey. At the same 

 place on the following day it was taken again with P. nymphula, 

 Enallagma cyathigerum, and one female Cordulia cenea, all being 

 more or less teneral. Of these P. nymphula was commonest 

 and most mature. On May 22nd a female Libellida depressa 

 was taken at Oxshott in the same district of Surrey. 



Between ByHeet and Wisley, in Surrey, on the following day, 

 Calopteryx splendens, Erythromma naias, P. nymphula, Ischnura 

 elegans, Agrion pulchellum, A. puella, and E. cyathigerum at 

 least were on the wing ; but many were in teneral condition. 

 On this occasion a female C. splendens was secured with its 

 captured prey — a mayfly, Ephemera vulgata, which appeared to 

 be in the sub-imago stage. 



Two days spent in the New Forest (May 30th-31st) brought 

 to notice Orthetrum ccerulescens just emerging, a fair number of 

 Calopteryx virgo, P. nymphida in plenty, and A. puella. On a visit 

 to Bookham Common, in Surrey (June 9th), I. elegans alone was 

 noted. On June 13th a female Pyrrhosoma tenellum was taken 

 at the Black Pond, where also L. quadrimaculata was common, 

 and a C. cenea was secured by Mr. Fenwick, junior. My first 



