Fezomac/ws.] BRITISH ICHNEUMONS. 187 



iiotuni unusually convex,^ with an irregular inflexcd costa running across 

 the centre of the petioiar area, and the second llageiiar joint somewhat 

 elongate. J\ venatorms has the fifth flagellar joint twice longer than broad, 

 and may, consequently, be distinct, but the conformation of the meta- 

 thorax is identical with F. bellicosus, though the mandibles, clypeus, 

 epistoma, inner orbits and occiput are all rufescent, possibly through 

 immaturity. Elliott writes, " According to Forster's description, F. Debeyi 

 appears to differ from the form hellicostis in the slightly shorter second and 

 filth flagellar joints, somewhat less convex thorax, and in the colour of the 

 third segment and apical tarsal joint. It is smaller, but I agree with 

 Thomson in considering the two in reality only slightly varying specimens 

 of the same species. Forster does not mention the scutellum in this 

 species (we may therefore suppose that it is not visible) ; but I have 

 noticed that in the larger and more strongly developed specimens of most 

 species of this genus, both the basal costa of the [)etiolar area and the 

 scutellum are more distinct than in the smaller." 



The type form is certainly uncommon with us. Found among coarse 

 herbage in Dorsetshire (O. P.-Cambridge, Entom. 1881, p. 137); Harris, 

 in the Outer Hebrides (Dale, E.M.M. 1883, p. 237) ; Shere in Surrey 

 (Capron) ; Appledore in Kent in April, and Oxshott in June, 1900 ; 

 Enniscorthy, in September (Beaumont) ; Batten, near Plymouth, in 

 July, 1894 (Keys) ; Deal, in July (Chitty) ; Felden in Herts. (IMffard) ; I 

 took a specimen at Huntingfield, near Faversham, early in August, 

 1903. The form bellicosus is much commoner : Netherfield and Guest- 

 ling in Sussex (Vict. Hist.) ; Bramford near Ipswich, in autumn 

 (E.M.M. 1900, p. 42) ; Taynuilt and Harting, in September (Beaumont) : 

 St. Just, Nunton in Wiltshire, Botusfieming in Cornwall, and Isle of Wight 

 (Marshall) ; Felden in Herts. (Piffard) ; Elie in Fife and Loch Awe in 

 Argyll, in June (Evans) ; I have swept it from reeds in Barnby Broad in 

 Suffolk and found it at the roots oi Matricaria on the Kessingland cliffs 

 in late July. Bridgman records the form Debeyi first from Britain (Trans. 

 Ent. Soc. 1887, p. 365), on the strength of a specimen taken by Champion 

 in the Isle of Sheppey ; and adds that in this example the petioiar 

 spiracles are slightly prominent. 



4. zonatus, Forst. 



Ichneumon aranearum, Fourc. E. P. 424 ; Gr. I. E. iii. 1096, i ? (?). Pezo- 

 fnachus zonatus, Forst. Wiegm. Arch. 1850, p. 124, 9; Thonis. O. E. x. I002, 6 9; 

 Kriech. Ent. Nachr. xxv. p. 298, 6 . 



9 . Head sub-triangular, with the cheeks somewhat short and not 

 sulcate ; clypeus deeply foveate basally, not centrally margined, with 

 lateral fossulae. Antennae with scape sub-cylindrical and hardly emar- 

 ginate apically ; basal flagellar joint slightly shorter than the second and 



1 Ichneumon Hoffmannscggii, Gr. Mon. Fed. loo ; Pezomachus Hoffmaniiscggii, Gr. I. E. ii. 918, ? . 



Antennae somewhat stout, about or a little more tlian half the lenRth of the body. Thorax elon- 

 Rate, gibbulous with apophyses distinct. Abdomen oblong-ovate, as long as or slightly longer than 

 the head and thorax; broader than the lattc-r, with the basal segment gradually explanate towards 

 the apex ; terebra a little longer than half the abdomen. Legs normal. 



Head black with the mouth infuscate. Antennae infuscatc and paler beneath, with the three 

 basal joints sometimes rufo-testaceous. Thorax red. Abdomen black with the petiole red. Legs 

 piceous with the femora infuscate, or infuscate with the coxae ferrugineous. Length, 2 lines. 



It is quite impossible to tell to what species this inadequately described " name " refers, and it is 

 much better left in oblivion. The gibbulous thorax appears related to the form bellicosus. It has 

 stood in our lists since 1870. 



