Mesolevus | BRITISH ICHNEUMONS. {le 

21. scapularis, Steph. 
Tryphon scapularis, Ste. Ill. M. vii. 257,¢%. Mesoleius leptogaster, Holmgr. 
Sv. Ak. Handl. 1855, p.175, excl. ¢. M. difformis, Holmgr. /1b. cit. 1876, p. 24, 
or Thoms, OFE xix e044 5d 2. 
Head very distinctly constricted posteriorly; mouth, clypeus, apices of 
cheeks and the whole face of both sexes, flavous; clypeus slightly emar- 
ginate, with apex laterally depressed and inconspicuous, centrally sub- 
interrupted. Antennae as long as body, ferrugineous, basally paler with 
the scape black, whitish beneath. Thorax black with pronotal margin, 
subhamate lateral mesonotal marks, a dot before and line below radices, 
flavous; notauli fine, mesopleurae alutaceous; areola elongate with its 
costae fine and subevanescent. Scutellum black. Abdomen with seg- 
ments two to four red, the second and fourth black-marked, usually with 
apex of second, whole of third and disc of fourth red; venter entirely 
flavidous; basal segment a little longer than hind coxae, with sulcus 
obsolete and basal fovea apically open. Legs normal, pale red with coxae 
and trochanters stramineous; hind coxae of ? entirely black basally, 
with their tarsi and apices of their tibiae in both sexes nigresent; apices 
of hind femora hardly infuscate. Wings with stigma dull stramineous, 
radix and tegulae flavous; areolet wanting, fenestrae confluent; nervellus 
oblique and elongately antefurcal. Length, 6—7 mm. 
Since Holmgren incorrectly associated the sexes of different species in 
1855 and renamed the female in 1876, it appears extremely doubtful if 
the true JZ. /epfogaster be British, especially as the only indigenous men- 
tion of the name is preceded by a query in Bridgman’s list of the Ichneu- 
monidae of Norfolk and was not considered by him sufficiently satisfac- 
tory to bring forward with his other “ Additions” in Trans. Ent. Soc. 
The exclusively Swedish JZ. dfformis was mentioned as British with 
some degree of doubt by Bridgman (Trans. Ent. Soc. 1882, p. 156) 
because in the example in question, bred by Fletcher probably at Worces- 
ter from Cladius Brullae’, the second recurrent nervure was not inter- 
stitial. Later, however, he records it (Trans. Norf. Soc. 1894, p. 626) 
with no hesitancy from Norwich and Salhouse in Norfolk. Giraud bred 
M. leptogaster from ‘“‘insectes, dans Rudus.” I have afemaleand two males 
of this species, taken at Felden in Herts by Piffard and Nunton in Wilts 
by Marshall, which agree ad amussim with Stephens’ type of Zrvphon 
scapularis, found near London in June and still in fine condition in 
the National Collection. 
22. molestus, Holmgr. 
Mesoleius molestus, Holmgr. Sv. Ak. Handl. 1855, p. 147; Thoms. O.E. xix, 
2045, ¢ ?. 
A black species with the face except a central 2 vitta, cheeks, mouth 
and hamate lateral mesonotal marks, stramineous. Abdomen of 9? with 
the third to seventh segments fulvidous, the third to fifth laterally nigres- 
cent marked; of g with the second to seventh segments stramineous- 
margined, the third and fourth pale testaceous, laterally black-marked 
with sides of remainder black. Legs fulvous, basally whitish, with basal 
half of hind coxae black. Length, 6 mm. 
Like MZ. scapularis in its oblique nervellus, confluent fenestrae, the clypeal 
