120 BRITISH ICHNEUMONS. [ Promethus 

5. cognatus, Holmgr. 
Bassus cognatus, Holmgr. Sv. Ak. Handl. 1855, p. 366, ¢ ¢; cf. Brisch. Schr. 
Nat. Ges. Danz. 1878, p.113. Promethus cognatus, Thoms. O. E. xiv. 1481, ¢; 
Morl. Trans. Ent. Soc. 1905, ¢ 2. 
Black with the apically strongly compressed abdomen centrally, and the 
legs, red; hind coxae and trochanters basally black ; basal segment elon- 
gate. Length, 4—5 mm. 
This species is similar to P. sulcafor and P. albicoxis in the elon- 
gate petiole, but differs materially in the evenly foveolate and in ? 
black clypeus, small 2 pale mark below the longer and more slender 
antennae, shining and immaculate mesonotum, somewhat broad and 
apically darker stigma, entirely substrigose second abdominal segment, 
the apical margin of which with the whole of the third and fourth seg- 
ments are red; the slender red legs with their coxae and trochanters, 
except the basally black hind ones, stramineous. From P. pulchellus it 
is distinct in its nitidulous and more finely punctate metathorax, the basal 
segment being twice longer than broad, and in its coxal colouration. 
That Holmgren’s ¢@ is entirely referable to this species is evidenced by 
the description of the basal segment referring to both sexes, though he 
adds ‘‘coxis posticis in @ rarissime basi nigra,’’ which doubtless led 
Thomson to refer only to the 9. 
It ranges through Germany, Sweden and France; and is by no means 
an uncommon species in Britain, occurring from 15th May to 22nd Sep- 
tember, by sweeping low herbage, only in very marshy places; from the 
middle of June to towards the end of August, however, I have no records, 
whence it appears to be regularly double-brooded. Botusfleming, Corn- 
wall and Cornworthy (Marshall); Plymouth and Bickleigh, Devon (Big- 
nell) ; New Forest, Hants (Morley); Guestling, Sussex (Bloomfield) ; 
Reigate (W. Saunders) and Shere (Capron), Surrey; Felden (Piffard) ; 
and common in Norfolk (Bridgman), where I have taken it at Cromer, 
Horning Ferry and Wroxham Broad, as well as in Suffolk at Brandon, 
Foxhall, Stoke by Clare, Bentley Woods, Southwold, Barnby and Oulton 
Broads, Barton Mills, Tuddenham Fen and Ousden. 
6. laticarpus, Thoms. 
Bassus sulcator, var.5, Grav.,3; B. exsultans, var.3, Grav.,3; B. gracilen- 
tus, Holmgr. Sv. Ak. Handl. 1855, p. 368, ¢ ?; Brisch. Schr. Nat. Ges. Danz. 1891, 
p.63,3(?). Promethus laticarpus, Thoms. O. E. xiv. 1481; Morl. Trans. Ent. 
Soc. 1905, p. 429, 3 ¢. 
Black with a transverse mesosternal mark, humeral lines and a large 9 
facial mark, flavidous; postpetiole quadrate; second segment apically, 
third except a citrinous spot on either side at the base, and fourth except 
a black discal mark, red; legs red with hind coxae basally black and 
their trochanters citrinous; ¢ with scutellum almost always stramineous 
and third segment tricoloured. Length, 343—5 mm. 
Easily recognised by the colouration of the third abdominal segment, 
the anterior pale mesosternal fascia, the basal segment not twice longer 
than broad, the @ pale marks before radices and the stramineous ¢ 
scutellum. 
