NOTES ON BRITISH ODONATA IN 1920. 7 



rising from distinct bases, rather long and slender, subequal (a few 

 smaller spines, irregularly arranged, on the actual margin ; in one 

 specimen one on each palp was longer than the rest and might 

 have been taken for a fourth seta had it been in line with the other 

 three) ; moveable hook dark, rather short, somewhat slender, sharp 

 pointed, about one-fourth to one-third the length of the outer margin 

 of the palp. Prothorax collar-like, with a fringe of hairs. Combined 

 meso- and meta-thorax small, hairy, llesothoracic spiracles very 

 pronounced. Wing-cases reaching nearly to the distal edge of the 

 fifth abdominal segment. Leys rather short, sturdy, hairy ; fore 

 about 8 mm. long, mid about 9 mm., hind about 15 mm. ; femora 

 and tibiae about equal ; 3-segmented tarsi shorter, the basal two 

 segments in fore and mid legs being short ; claws rather long, 

 curved, sharp-pointed. Abdomen slightly hairy; broadest about the 

 sixth segment, contracting slightly forwards, gradually tapering to 

 the tip of the appendages behind ; .subcylindrically arched above, 

 flattened ventrally ; colour a fairly uniform brown, the sutures 

 paler; segments subequal in width, except the tenth, which is much 

 narrower ; a blunt mid-dorsal spine near the hind margin of segments 

 4-7 that on 5 being most prominent, surrounded by some longish 

 hairs, continued as a slightly raised smooth space on 8 and 9 ; 

 small lateral spines on segments 8 and 9. Dorsal anal appendage 

 triangular, about as long as segments 9 and 10 together; male 

 process fairly prominent ; cerci just longer than the dorsal appendage ; 

 circoids about half the length of the cerci ; all five appendages 

 sharp-pointed. [Material: two New Forest naiads bred in 1920; 

 one, captured at the same time, preserved in formalin ; five other 

 skins found in the New Forest under conditions which left no doubt 

 as to their identity.] :;: 



Of Cordidia cenea, Linn, several were seen and one was 

 taken in Alice Holt on 24 May (Stowell) ; a female was taken 

 at Camberley, Surrey, on 28 May (Green) ; two females were 

 captured at Abbot's Moss on 31 May and about 7 June (Jackson); 

 and a female was caught at Horsley, Surrey, on 9 June (Lucas). 



tEschnhxe. — On 22 May a somewhat teneral female 

 Gomphus vulgatissimus, Linn, was taken in the New Forest 

 (Lucas). A "male Cordulegaster annulatus, Latr. was captured 

 in the Forest of Dean in June (Jackson). Near Lymington, 

 Hants, Brachytron praiense, Mull, was found to frequent a very 

 boggy birch wood in Boydon Woods : 15 May was the earliest 

 date on which it was seen (Sones). There are two records of 

 Mschna mixta, Latr.— a male at Brighton in August (Killington) 

 and a specimen near Lewes in September (Blair). A teneral 

 female of M. jimcea, Linn, was taken at the Byfleet Canal, 

 Surrey, on the occasion of the S. Lond. Ent. and Nat. Hist. 

 Society's Excursion there on 24 July. On 12 Sept, a female 

 M. cyanea, Mull, was taken at Bainow, Cheshire, in which the 



* Dr. E. Eousseau in 'Ann. Ent. Soc. Belfiique,' lii. (1908), p. 286, has given a 



description, which in the matter of the labium does not agree entirely with the 

 New Forest examples. He does not give the source of his material. 



