Cymodusa] BRITISH ICHNEUMONS. 105 



September (Beaumont); a female at Bungay on 3rd October, iqoo (Tuek) 

 and three others at Abinger Hammer, Surrey, early in September (Butler) ; 

 Oulton Broad at end of September (Bedwell), Felden in Herts (Piflard), 

 Barnby Broad in Suffolk at end of September, 1900, and Banchory in 

 Kincardine in September, iqio (Elliott). I have taken it in Suffolk on 

 f)th September in Henham Park; on 22nd in Bentley Woods; on 25th, 

 1907, many males by sweeping reeds in marshes at Depden, Barton ]\Iills, 

 Mildenhall and Chippenham Fen, and on that date five years earlier it 

 it was flying not uncommonly among marsh grasses at Foxhall ; on 26th 

 in my ^^onk Soham garden; on ist October, 1900, it was flying about 

 yarrow at Benacre Park and on 7th I took a male on Angelica sylveslris 

 flowers at Claydon Bridge in 1899. The insect termed CaUidtva alho- 

 vincia by INIarshall (Ent. Ann. 1874, p. 143), who took it at Braemar, is a 

 typical female of the present species and is in the British Museum. 



3. exilis, Hohngr. 



Cymodusa exilis, Holmgr. Sv. Ak. Handl. 1858, p. 41 ; Brisch. Schr. Nat. Ges. 

 Danz. 1880, p. 144 ; Thorns. O.E. xi. 1097. ^ ? . 



A black and slender species with the tegulae white, the centre of the 

 abdomen with at most two trans-fasciae and most of the legs red. 

 Length, 4 mm. 



Similar to the preceding and allied in facies but with the body smaller, 

 the tegulae pure white and the anterior legs basally darker. 



It is rare on the Continent; Holmgren knew a Swedish female taken 

 at the end of July, a male from southern Lapland in the middle of August, 

 etc.; Gaulle records it from France and Brischke doubtfully from Prussia. 

 It has not hitherto been known as British ; I possess a single pair, of 

 which the female turned up on Heradcum sphondyliuvi flowers at Oxshott 

 in Surrey, when I was collecting with Beaumont, on loth July, 1901, and 

 the male on 17th August, 1903, in a Ryde greenhouse. 



4. antennator, Holmgr. 



Cymodusa Antennator , Holmgr. Sv. Ak. Handl. 185S, p. 41 ; Thorns. O.E. xi. 

 1097, i ? ; Brisch. Schr. Nat. Ges. Danz. 1880, p. 144, ? . Var. C. flavipes, 

 Brisch. loc. cit. p. 144; Bridg. -Fitch, Entom. 1885, p. 100, <f . 



A black species, with the tegulae flavescent white ; the abdomen later- 

 ally towards its a{)ex but not centrally rufescent, or in J entirely black ; 

 the spiracles of the second segment beyond its centre; and the legs 

 mainly rufescent, with anterior coxae and trochanters flavidous white. 

 Length, 5-7 mm. 



Flasily known by the pale colour of the anterior legs and apically 

 strongly constricted 9 face. 



Cymodusa flavipes is erroneously said by Schm. (Opusc. Ichn.) to cer- 

 tainly not belong to the present genus; in my long series the eyes are 

 obviously, though sparsely, pilose. Bridgman discusses (Trans. Ent. 

 Soc. 1887, p. 367) the probability of C. flavipes being a male form of 

 Holmgren's species; unlike him, I possess typical males and find them to 

 differ in nothing but colour, more especially in their piceous, nigrescent 

 or black hind femora. 



H2 



