Canidiella\ BRITISH ICHNEUMONS. 127 



3. exigua, Grav. 



Caiiipoplcx cxiguiis, Gr. I.E. iii. 499, ? . C. piisilliis, Ratz. Ichn. d. Forst. iii. 

 82, ? ; cf. Thorns. O.E. xi. 1113. Canidia piisilla , Holmgr. Sv. Ak. Handl. 1858, 

 p. 104 ; Brisch. Schr. Nat. Ges. Danz. 1880, p. 175, c? ? . C. cxigiia, Thorns. 

 O.E. xi. 1112, <j ? . 



A small black species with the flagellar joints discreted, the legs but 

 little pale marked, the second segment not broader than long and the 

 terebra fully half the length ot the somewhat narrow abdomen. Length, 

 3-^--4| mm. 



This little species has the flagellum slender with only about eighteen 

 joints, the head not elongate with the vertex by no means broad, the 

 abdomen somewhat compressed with the second segment not transverse, 

 the hind femora slender and their tibiae nigrescent with their centre 

 externally dull white ; and rarely the male tegulae white. 



I see little justification for transposing Campoplex pusillus, Ratz., to 

 Nemeritis, as has been proposed by Thomson, since it is this species that 

 Holmgren described; its author indicates it (Ichn. d. Forst. iii. 251) as 

 preying upon the Malacoderm beetle, Dasyfas niger, Linn. 



This is one of the commonest species of the genus both here and 

 abroad ; it is constantly seen on the flower-tables of Heracleum sphon- 

 ihlinm during July; Germany, not uncommon in Sweden, Prussia, France 

 and during August in Belgium. It is recorded from Bickleigh in Devon 

 on 20th August by Bignell, Gunton in Suffolk and Brundall in Norfolk 

 during July and C. pusilla, which he considered distinct, from P'arlham 

 near Norwich in July by liridgnian. I possess a score of specimens in 

 Capron's and others in Saunders' Surrey collections, received it from 

 Bury St. Edmunds and Tostock from Tuck, and have taken it by sweep- 

 ing in Monk Park Wood in the same district in the middle of May, the 

 New Forest in June, on Galium verum at I'^elixstowe, at Southwold and 

 Theberton in Suflfolk on flowers of Heracleum, where both sexes were 

 very common at Monk Soham in iqoS. It appears to aftect the edges 

 of arable land, as I noticed at Salisbury towards the end of June, iqii. 



4. trochantella, Tlioms. 



Campoplex tristis, Gr. I.E. iii. 492, ? pedmont. Ctmidia trochantella. Thorns. 

 O.E. xi. 1114, ? . 



A black species with the arcolet regular and distinctly petiolate, the 

 areola short and pentagonal, anterior legs partly red, tegulae white, 

 posterior tibiae centrally externalh' and their trochanliTclhis dull stra- 

 mineous. Length. 5-5^ mm. 



This species, of which the ^ is still unknown, and the next dilVi-r from 

 all the preceding in the shape of thc> alar areolet and metanotal annila, 

 in having the front femora except basally and the intermediate ajjically 

 red, and tlie second to seventh segments glaucous margined. 



It is not rare in central and soutliern Europe, extending to the Pyrenees, 

 says Thomson; (iravenhorst knew it only from Piedmont, and (JauUe 

 records it from France. It was first mentioned by Bridgman (Trans. 

 Norf. Soc. 1894, p. 622) as occurring at Earlham near Norwich so late as 

 October, but with no note (jf its novelty in Britain, where it is certainly 

 rare and 1 possess but three Surrey females in Capron's collection. i)n 



