Catoglyplus | BRITISH ICHNEUMONS. 237 


It is said to differ from the rest of the genus in its size and in having 
the occipital carina not interrupted, in an impressed frontal fovea above 
the antennae, with costulae and all metathoracic areae very conspicuous. 
Germany (Grav.), Sweden (Thoms.) and France (Gaulle). “ Rare: 
found in June near London” (Stephens, who entered it in his Catalogue 
under the genus Ophion). ‘This is the only record we possess and I must 
own I do not understand the species, which is not now contained in 
Stephens’ collection. 
4. fuscicornis, Gmel. 
Ichneumon fuscicornis, Gmel. S. N. 1790,2701. Mesoleptus nemoralis, Gr. I. 
E. ii. 70, excl. ¢. M. fuscicornis, Gr. lib. cit. ii.87; Ste. Ill. M. vii. 226, ?. 
Caloglyptus fuscicornis, Holmgr. Sv. Ak. Handl. 1855, p, 108, cf. l.c. 1856, 
p. 377; Kriech. Ent. Nachr. 1897, p. 122; Thoms. O. E. ix. 923, ¢ ¢. Stiphro- 
somus fuscicornis, Thoms. l.c. xix. 1973. Var. M. montanus, Gr. I. E. ii. 82, 2; 
C. montanus, Holmgr. Sv. Ak. Handl. 1855, p. 108; Brisch. Schr. Nat. Ges. Danz. 
1887, p.87; S.montanus, Thoms. O. E. xix. 1974, 6 ?. Var. M. nemoralis, 
var. 3, Gr. I. E. ii. 70, ¢; M. foveolator, Holmgr. Sv. Ak. Handl. 1854, p. 64; 
C. foveolator, Holmer. /.c. 1855, p. 108; Kriech. Ent. Nachr. 1897, p. 122; Thoms. 
O. E. ix.923, ¢ ¢; S. foveolator, Thoms. l.c. xix. 1973. Mesoleptus Waltont, 
Curt. B. E. pl. dexliv, ¢. M. mirabilis, Ste. Ill. M. vii. 223, ¢. 
A -nitidulous and finely punctate species with the abdomen, except 
basally and in ¢ apically, red with the antennae of 2 not white-banded 
and of ¢ verticilate-pilose. Head with the mouth andin ¢ either whole 
clypeus and face or only the facial orbits flavous ; vertex impressed on 
either side. Antennae of 9 filiform and much shorter than body, tes- 
taceous below; of g nearly as long as body, setiferous throughout and 
black, more or less broadly pale basally beneath. Thorax black with 
notauli not very deep; metanotal areola narrow and parallel-sided, but 
apically complete; petiolar area short and entire; costulae wanting. 
Scutellum black. Abdomen deplanate, nitidulous and bright red with 
basal segment, except sometimes in 9, and the ¢@ anus black; basal 
segment distinctly petiolate with carinae extending beyond its central 
spiracles ; terebra distinctly exserted and reflexed. Legs black ; anterior 
red with ¢ coxae and trochanters either flavous or black, hind tibiae 
except apically and tarsi testaceous, the latter sometimes with the third 
and fourth joints indefinitely whitish. Wings hyaline; radix and tegulae 
testaceous or stramineous; stigma more or less pale; areolet nearly 
always entire and basal nervure usually continuous. Length, 8—1o0 mm. 
After considerable research I find I cannot regard C. foveolafor or C. 
montanus as distinct from the present species; the former is erected as 
new by Holmgren on account of the narrower and deeper petiolar sulcus, 
presence of gastrocoeli on the second segment, apically darker stigma 
and white-banded @ hind tarsi; while the latter is said by him to differ 
from both in its posteriorly broader head, its lack of postocellar foveola 
and areolet, while the entirely pale ¢ face of both the former is black 
with only flavidous marks in C. monfanus. ‘Thomson considers the lower 
basal nervure antefurcal and ¢ face flavous in C. foveola/or, but continu- 
ous with the ¢ facial orbits alone citrinous (= JZ. Walfoni, Curt.) in C. 
Suscicornis ; 1 find the position of the basal nervure varies in the two wings 
of even a single example and facial marking are proverbially instable ; 
moreover unlike Holmgren, ‘Thomson gives C. mon/anus an entirely pale 
3 a If there be three species, I should give foveolafor the black-faced 
male, 
