Pimpla.] BRITISH ICHNEUMONS. 67 



rather darker flagellum and basal ly infuscate hind femora, if the relative 

 length of the tarsal joints be overlooked. 



At first it appeared to mc that Bridgman had mistaken P. potnortim for 

 the present species, which he records as new to Britain (Trans. Ent. 

 Soc. 1886, p. 366), as captured by Thouless at Drayton, in 1885. This 

 specimen, he says, agrees with Taschenberg's P. nigriceps in general 

 colouration and structure (i.e. such little as that author — and subsequent 

 ones — mentions!), but its length was only five millimetres. He did not 

 recognise P. pomonim as British till 1889, when Capron sent him it from 

 Surrey ; but in his Ichneumons of Norfolk, in 1893, he record?, P. pomonim 

 taken at Drayton by Thouless, and entirely omits P. nigriceps : strongly 

 pointing to the assumption that the latter name was incorrect. But in 

 bringing forward P. iiigriaps, he had said that the nenellus intercepted "a 

 little below the middle," whereas in P. pomonim it intercepts close to the 

 posterior nervure. In his specimen, he adds, that the sternum and meta- 

 thorax were black (as in P. pomonim). I have seen nothing like it. 



10. diluta, Ratz. 



Pimpla diluta, Ratz. Ichn. d. Forst. iii. 102 ; Holmgr. Sv. Ak. Handl. 1860. 

 n. 10, p. 28; Schm. Zool. Jahrb. 1888, p. 528 ; Opusc. Ichn. 1068, ? ; Bridg. 

 Entom. 1879, p. 55, i ; Trans. Ent. Soc. 1881, p. 166, <? ? . ? P. laevigata, 

 Tschek, Verh. z.-b. Ges. 1868, p. 273, i ? . 



A somewhat large, bright fulvous species. Head black and not nar- 

 rowed behind the somewhat emarginate eyes ; frons and vertex finely and 

 closely punctate with grey pilosity, the former not centrally canaliculate ; 

 face immaculate and, more den.sely in S . clothed with long grey hairs. 

 Antennae bright fulvous, hardly longer than half the body, filiform in 9 

 and in J hardly more attenuate apically; scape and sometimes basal half of 

 the first flagellar joint black. Thorax somewhat stout, bright fulvous with 

 the sternum, scutellar region, extreme base and apex of metathorax, 

 mesonotum laterally and, more usually in ^ , discally black ; elongate line 

 before the radix flavous ; metathorax somewhat irregularly, and in J 

 obsoletely, punctate with grey pilosity ; areola basally subparallel-sided 

 and ofteii nigrescent, apically explanate ; petiolar area smooth and apically 

 margined ; spiracles small and quite circular. Scutellum finely punctate, 

 pilose, dull and, together with the postscutellum, fulvous. Abdomen 

 bright fulvous : of 9 elongate-fusiform with the extreme apices of the 

 segments .sometimes darker, .subelevated and nitidulous ; otherwise strongly 

 punctate and transversely impressed at their apical third, before which the 

 central ones are laterally subtuberculate ; basal segment strongly and con- 

 vergently bicarinate to a little beyond the subinfuscate centre only ; 

 terebra half length of abdomen, black, strongly transverse-aciculate and 

 setigerous, with the spicula black : of S t)right, fulvous, cylindrical, 

 sublinear, more than double the length of the head and thorax, glabrous 

 and nitidulous, becoming, as in 9 > subpilose apically ; segments obso- 

 letely impressed transversely at their apical third, tubercles wanting ; 

 extreme apical angles of the .second and the apex of the seventh segment 

 to anus black ; ba.sal segment double length of breadth and the second 

 nearly so, former finely and distinctly bicarinate to near the constricted 

 apex.' Legs entirely fulvous with oiily the claws black; hind tibiae hardly 

 darker at apex and before ba.se ; onychii explanate and four times longer 

 than the penultimate joint ; claws of 9 distinctlv, of (J obsoletely, lobate 



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