192 BRITISH ICHNEUMONS. 



The body is smaller and less stout than that of the next species, from 

 which it may be known by the form of the head, slightly stouter antennae, 

 more oblong abdomen, immaculate femora and less distinctly spinulose 

 tibiae. 



This is the species known to the older British authors as /. viridatorius, 

 which is said to have been scarce, in the New Forest and about London, 

 towards the end of June. I know of no recent captures, nor does it 

 appear to have been bred. It occurs throughout central Europe, extend- 

 ing to Italy. 



8. quadripunctorius, Milll. 



Ichnewnon qtiadripuiictoriiis, Miill. Prodr. n. 1773, 9 . Amhlyteles quadripunctorius. 

 Berth. Ann. Soc. Fr. 1895, p. 623, c5 ? . A. qiiadrinotorius (sic), Thorns. O. E. xix. 

 2096. /. notaloriiis, Trentep. Isis, 1826, p. 74. /. natatorius (sic). Fab. E. S. Suppl. 

 219; Piez. 57 ; Gr. I. E. i. 429 ; Ste. 111. M. vii. 184, 9 • A. natatorius, Wesm. Nouv. 

 M(5m. Ac. Brux. 1844, P- "4 ; Biil. Ac. Brux. 1848, pp. 294, 338 ; lib. cit. 1854, p. 90; 

 Holmgr. Ichn. Suec. ii. 245 (part.) ; Voll. Pinac. pi. vii. f. 3 ; Thorns. O. E. xii. 1234, 

 c5 9 . /. hideutorius, Gr. I. E. i. 426 ; Ste. 111. M. vii. 183, i. I. xanthozosmus, Gr. 

 I. E i. 383, c5. A. xanthozosmus. Thorns. Ann. Soc, Fr. 1888, p. 113, cJ 9. /• media- 

 tortus, Panz. F. G., pi. vii. {nee Fab. et Thorns.). 



Head not truncate posteriorly, somewhat narrowed behind the eyes, 

 cheeks long ; 9 with frontal orbits flavous ; ^ with palpi, mandibles, 

 clypeus and face, flavous. Antennae slender, setaceous, black ; of ? 

 white-banded, with eighth flagellar joint quadrate ; of $ with scape 

 flavous beneath. Thorax black ; of $ with pronotum, lines before and 

 beneath the radix, flavous ; areola sub-quadrate, costulae entire ; apo- 

 physes small, acute. Scutelluni flavous. Abdomen of ? broad, of $ 

 lanceolate, black ; $ with segments two and three flavous, or the latter 

 with only two large and sometimes confluent patches flavous, and the 

 fourth to seventh margined with glaucous-white ; of $ immaculate or 

 with the central segments more or less marked and apically margined 

 with flavous ; post-petiole aciculate ; gastrocaeli small and superficial ; $ 

 with ventral segments two to four plicate and the ultimate apically acumi- 

 nate. Legs somewhat slender, fulvous-red ; coxae, trochanters, and apices 

 of posterior femora and tibiae, black ; $ with anterior coxae in part and 

 all the tibiae and tarsi, except apices of the posterior, flavous ; tibiae 

 somewhat strongly spinulose. Wings a little clouded, stigma fulvous, 

 areolet narrowed above ; tegulae of ^ flavous. Length, 16-20 mm. 



The fourth to seventh segments of the $ are often immaculate ; and 

 the $ occasionally has the abdomen entirely black. The ? variety 

 Ichneiitnon iufestorius, Fonsc, has only the third segment bimaculate and 

 the fourth pale-dotted. 



This is the A. 7iotatorius of Marshall's catalogues, and is certainly a not 

 uncommon species in Britain, where it is to be found in gardens, etc. It 

 is recorded from Essex, London and Hastings, as well as from Bickleigh, 

 Lydford and other places in Devon, where Bignell has bred it from Tri- 

 phaena conies and, at the end of June, from T. fimhia. Fitch has also 

 bred it from the former ; and Montgomery has sent me a live female {cf. 

 E.M.M. 1899, p. 273) from the latter host, whose larva was found in May, 

 at Galashiels, in the middle of July ; in emerging, this last had entirely 

 removed the capital extremity of the pupa in an irregular jagged circle. 

 It is a common species on the Continent, extending to Algeria; and has 



