Mosoleius] BRITISH IGHNEUMONS. 167 

hitherto been mistaken for JZ. caligafus with us and is fairly common, 
though there are no records. Marshall took it at Botusfleming in Corn- 
wall and Cornworthy in Devon, and thought it JZ. carinatus, Holmgr., 
which is a ? with laterally pale face, whereas in the present species the 
male face is centrally black; Bignell found it about Plymouth, Capron at 
Shere (labelled IZ. calrgatus) and Piffard at Felden (labelled JZ. audicus). 
It has occurred to me sparingly both in the New Forest and Tuddenham 
Fen, Suffolk, in June and August. 
37. pyriformis, Ratz. 
Tryphon pyriformis, Ratz. Ichn. d. Forst. iii. 124, ¢. Mesoleius unifasciatus, 
Holmer. Sv. Ak. Handl. 1855, p. 162; Jib. cit. 1876, p.45; Brisch. Schr. Phys. 
Ges. Kénig. 1871, p. 80; Schr. Nat. Ges. Danz. 1878, p. 84; /.c. 1891, p 60; 
Thoms. O. E. xix. 2048, ¢ ¢. 
Head slightly constricted posteriorly; cheeks subbuccate; clypeus 
transversely elevated, apically truncate or very slightly emarginate with 
the apex entire; mouth, clypeus, face and apices of cheeks, flavous. An- 
tennae with scape flavidous, and flagellum pale ferrugineous, beneath. 
Thorax stout, anteriorly subelevated, with notauli slender and hardly 
extending to apex; pronotal margin, hamate lateral mesonotal fasciae 
and radical marks, flavous; mesopleurae finely punctate-alutaceous and 
shining. Scutellum flavous, in ? very rarely black. Abdomen with the 
segments narrowly pale-margined, the third with a triangular testaceous 
basal mark, and the venter flavous; basal segment slightly longer than 
hind coxae, gradually strongly constricted basally, with the sulcus more 
or less distinct; second alutaceous and broader than long, with transverse 
and somewhat conspicuous basal thyridii. Legs red with anterior coxae 
and trochanters flavous; hind tarsi and tibiae nigrescent, with a broad 
whitish band before base of latter; hind femora somewhat stout. Wings 
with stigma pale piceous, radix and tegulae stramineous; areolet wanting ; 
nervellus subopposite or antefurcal. Length, 7 mm. 
This species is like J/. multicolor in size, colour and the wanting areolet, 
though distinct in the abdominal colouration, the centrally very broadly 
and slightly callose clypeus, longer palpi and basally infuscate hind tibiae. 
I see no reason to doubt the correctness of Brischke’s synonomy, here 
for the first time adopted. 
Ratzeburg says Brischke bred this species from larvae of Zenthredo 
(Selandria, Brisch.) stramineipes in Germany on 7th April. Holmgren 
adds that his species is not infrequent in shady woods in central and 
southern Sweden, “praesertim in Pteride aquilina,’ upon which the above 
sawfly larvae feed during July (Cam. iv. 169). Jf. untfasciatus is recorded 
by Bridgman (Trans. Norf. Soc. 1894, p. 626), with no intimation of its 
novelty as British, from Earlham near Norwich; and there isa ¢ from 
Botusfleming in Marshall’s collection, named by him J/. pulchellus, 
Holmgr., which its author in 1876 synonymised with JZ. sternoxanthus, 
but in this case the clypeus appears truncate. I have found this species 
upon several occasions in the New Forest during the first half of July, 
associated with an abundance of the 2 imagines of the above host, at 
Wilverley on ‘bracken, at Lyndhurst, Matley Bog and on bracken at 
Setley. 
