250 BRITISH ICHNEUMONS. ^Lahrorhvihus 



4. debilis, Wesm. 



Thcrion gracilif>es. Curt. B.E. fol. 736, J ; cf. Bridf<. -Fitch, Entom. 1884, 

 p. 225 (?). Anoiiialon dchilc, Wesm, Bui. Ac. Brux. 1849, p. 133, <? S ; c/. Krieger, 

 Zeits. Hym -Dip. 1904, p. 173. Labrorhychus debilis, Schm. Opusc. Ichn. 

 p. 1495, i ? . {?) L. varicgittiis, Szepl. Term. Fiiz. 1899, p. 216, ? . 



Head black, with the face and cheeks tlavuu.s; temples immaculate 

 bhu-k. Antennae exactly as long as body in 9, not longer in S, with 

 flagellum rufescent before its base; scape bright red, with postannellus 

 and flagellar base black. Abdomen red with second segment alone dis- 

 cally piceous, rarely with anus also nigrescent; terebral valvulae piceous. 

 Legs red, with the anterior coxae and trochanters of both sexes flavous; 

 hind legs with trochanters, tibial apices and those of all the tarsal joints 

 nigrescent. Length, 12 (abroad -i 6 mm.). 



Hxtremely like Z. temiicornis, but with the head distinctly constricted 

 posteriorly, the scape fulvous above, the antennae somewhat shorter and 

 anterior legs of 9 basally flavous; Wesmael says the scutellum is rarely 

 laterally red. 



Not uncommon in Belgium (Wesmael), in June and August (Tosquinet) ; 

 France (Gaulle); and (ierman)- (Krieger). It has not been mentioned 

 from Britain, but I captured a single undoubted female on the flowers of 

 Focnicidum vulgare on the morning of 3rd September, 1899, at Alderton 

 on the Suffolk coast; it was the only Anomalid seen. 1 place Curtis' 

 male tentatively here, since it is almost certainly this or the last species, 

 which latter he knew; he says the antennae are very long and hind tarsi 

 not explanate, the anus is black and the length 11 mm.; he gives no 

 locality and his description is inadequate. 



AGRYPON, Forster. 



Forst. Verb. pr. Rheinl. 1860, p. 151. 



This genus is at once recognised by the total lack of any nervure emit- 

 ted by the nervellus and in this character agrees with the same author's 

 genus Atromctus, which was regarded as distinct upon the feature of the 

 anal or parallel nervure being emitted so high from the brachial cell as 

 to be subcontinuous with the median. This hardly constitutes generic 

 rank, however, and I have treated both under the present name. How 

 far Agrypon itself will stand the test of anything apprcjaching a thorough 

 investigation it is not yet easy to say; I myself lean to the assumption that 

 it is totally non-existent, which is to say that the whole of the species here 

 grouped on account of the deficient nervure of the hind wing are nothing 

 but somewhat weakly developed individuals of species already treated of 

 under the preceding genera. Thus both Agrypon variitarsum and A. 

 w/^g'/vy^^'j are quite certainly only weak Labrorhychus tenuicornis ; and the 

 distinctions between L. nigricornis and A. flaveolatiim, with which it so 

 constantly occurs, are subtle. 



Tabic of Species. 



(20). I. Anal (parallel) nervure not continuous 

 with the median. 

 (5). 2. Face not entirely tiavous. 

 (4). 3. Abdomen centrally clear red ; head 



immacul.itr l)l;i(-k I. rRXflT.VR.srM, Grav. 



