ffemiieles.] BRITISH ICHNEUMONS. I3I 



transverse, mesosulcus and sternaiili fine ; metathorax feebly rugose, some- 

 what longitudinally so between the two distinct transverse costae ; areola 

 hexagonal, apically acute and usually indistinct laterally. Abdomen 

 narrower than the thorax, dull and closely punctate ; black with the three 

 basal segments more or less castancous basally ; of 6 sub-linear, of 9 

 ovate ; basal segment confusedly punctate, short, gradually explanate 

 apically, shortly bicarinate, with a slight central furrow and small tubercles ; 

 epipleurae of second segment acutely inflexed ; terebra about half length 

 of abdomen, ? anus whitish. Legs sub-normal, testaceous or stramineous, 

 with most of the femora and hind til)iae infuscate, the latter basally pale, 

 though not conspicuously white ; calcaria short, tarsal claws small. Wings 

 hyaline, of $ with a broad cloud beneath the stigma and a dark central 

 fascia ; stigma infuscate, radix stramineous, tegulae of variable colour ; 

 areolet sub-irregular ; lower angle of the discoidal cell acute ; nervellus 

 evidently antefurcal. Length, 2^-5 mm. 



This species may be known from its immediate allies by the buccate 

 and not smooth cheeks, short calcaria, inconspicuous lateral metathoracic 

 costae, and its $ by the rosy sides and front of the mesothorax. 



The sub-irregular areolet, red markings and fasciated wings, relate it 

 with Spinolia maculipetinis. 



It has been commonly bred from various hosts, but especially the case- 

 bearing larvae of various Lepidoptera, throughout Europe. I find records 

 from Fumea intertnediella and other uninstanced Psychids ; from the 

 pupae of Tinea ( Scyihropia) cra/aege/hi, Sc. ienelia, Cokophora tiliella 

 (a>ia/ipen?tel/a), Gastropacha quercus and Bomhyx neustria ; and Giraud 

 bred it hyperparasitically, through Microgaster sp., from Liparis dispar. It 

 has been bred in England from the galls of Cynips Kollari. This appears, 

 although common enough, to be much less abundant than H. areator ; 

 it sometimes occurs on umbels in June and oak-trunks in April. I have 

 records from Norfolk ; Stonehouse and Bolt Head, in ]3evon _; Ore, Fair- 

 light, Guestling and Hollington, in Sussex ; Maldon, in Essex ; Eelden, in 

 Herts. ; Greenings and Shere, in Surrey ; Bury St. Edmunds, Tuddenham 

 Fen and Bentley Woods, in Suffolk ; Reigate, Worksop, Bristol, Lynd- 

 hurst, Acton, Chiswick and Wales. It is often found in houses (<?.,§"., 

 Monks' Soham House, Suffolk), where A7iobium domesticum is common, 

 but I do not think that association has been established, though it certainly 

 preys upon clothes moths, since Colthrup has bred it, on 9th June, 1904, 

 at Dulwich from Endrosis fenesirella. 



13. longicauda, Thorns. 



HemileUs fasiiif<enuis, Rrisch. .Schr. Nat. CJes. Danz. 18S1, p. 348,(5 9 {»e'i Bnillt'). 

 //. longicauda. Thorns. O. E. x. 980, 9 ; cf. Bridg. Trans. Knt. .Soc. 1889, p. 417. 

 H. fasiiititntiis, Dalla Torre, Cat. Hym. iii. p. 649. 



Black and dull. Head somewhat narrowed behind the eyes and not 

 red-marked ; clypeus discreted. Antennae filiform, with third joint thrice 

 longer than broad ; of $ black, of 9 with the third to sixth joints entirely 

 and the following beneath red. Thorax of 6 black, of 9 with the whole 

 of the [)ronolum, most of the mesonotum and the deplanate scutellum 

 red ; metathorax convex with com[ilete areae ; areola hexagonal and sub- 

 transverse, petiolar area discreted. Abdomen ovate, narrower in ^ ; black 



K 2 



