I20 BRITISH ICHNEUMONS. 



developed examples the apex becomes more acuminate, the radial nervure 

 is sharply reflexed, meeting the apex of the metacarpus and there forming 

 a minute secondary stigma ; in this case the outer margin of the wing is 

 often incised to the apex of the external cubital nervure and the wings 

 extend only to the petiole. It might be thought this form were a case of 

 arrested development, through which to pass the winter months, since the 

 examples are nearly always found in hibernation, but this is not the case, 

 for I found one running swiftly across a dusty rohd in the hot sunshine, at 

 2 p.m., on 7th July, 1901, near Newbery, Berks. ; it has also occurred to 

 me at Peppering, near Hastings, in Bentley Woods and Barnby Broad, 

 Suffolk ; near Guildford, in moss (Capron, Entom. 1880, p. 88) ; Bridge- 

 north (Marshall, E.M.M. 186S, p. 154). There are also specimens in 

 Marshall's, from London, and Desvignes' collections ; Beaumont has 

 found it at Lewisham, Neach Hill and Norwich. 



Ich. latrator is a most abundant species, and the females may be found 

 in multitudes, in tufts of grass, under moss, on stumps and in similar 

 hibernacula ; the males are common on Ans;e/ua sylvestris, in damp 

 situations, in August and September. The brachypterous form is much 

 rarer, I should say about five or six per cent. 



Oulton and Barnby Broads, near Lowestoft, and Montrose, N.B. 

 (Bedwell) ; Finborough and Tostock, Suffolk (Tuck) ; South Leverton 

 (Thornley) ; Tuddenham, Suffolk (Sparke) ; Ewell, near Epsom (Elliott). 

 Hastings district : Peppering, Brede, Battle, Westfield, etc. New Forest ; 

 Henstead, Icklingham, Claydon, Bentley Woods, and Foxhall, in Suffolk 

 (Morley) ; Plymouth, on banks of the Tavy (Keys) ; Lastingham (Yorks. 

 List) ; Wicken Fen (Donisthorpe) ; Abinger, Surrey (Butler) ; near Guild- 

 ford, abundant (Capron. Entom. 1880, p. 88) ; Dover and St. Margaret's 

 Bay (Sladen) ; Cornwall (Davies) ; Headly Lane (Beaumont) ; Essex. 

 In Norfolk, Bridgman found it not uncommon at Earlham, Brundall and 

 Cromer ; Bignell took it at Bickleigh, Devon, in September ; and Stephens 

 says it is not uncommon at the beginning of June, and in August, at 

 Darenth, Charlton, Hampstead and Dover ; and that the form vienfis, 

 which he beautifully figures, and of which there are but two examples in 

 his collection, is rare, but has been secured at Coombe Wood, in June, 

 and probably in Salop. Parfitt says he bred this species from pupae of 

 Orthosia stabilis, in March, 1857, in Devonshire. 



Notes oji the Latrator Group. 



I entertain considerable doubt as to the distinction of the above and the 

 following three species, and might extend my scepticism further if the differentia- 

 tions were indicated by less credible authorities. 



The $ 5 of both /. latrator and of /. siibqiiadratiis have the density of 

 puncturation on the head variable ; in the latter the orbits, in one example only 

 of those examined, are narrowly red ; the clypeus is entirely black or apically, 

 or laterally at the apex, red ; the mouth parts are always red with the palpi 

 fulvous ; the clypeus is more or less, or not at all, discreted fi^om the face ; the 

 scape is sometimes slightly produced externally at the apex ; and the lateral 

 upper metathoracic areae are usually not divided, in both species. In one case 

 /. subqiiadratiis has the centre of the pronotum and apex of the scutellum red, 

 approaching the latter of /. jneoniptiis, Holmgr. ; /. latrator rarely has the 

 petiole brownish throughout or with a central piceous fascia. The extent of 

 the black-marking on the hind legs varies only from the extreme apex to the 

 apical two-thirds of the femora and one-third of the tibiae ; sometimes the hind 



