170 



BRITISH ICHNEUMONS. 



(27). 

 (32). 



(31)- 



30- 

 31. 



Antennae with fourth flagellar joint 

 quadrate 8. fossorius, Grav. 



Antennae with fourth flagellar joint 

 elongate 9. INSPECTOR, Wesin. 



Scutcllum black ^ lO- mklanocastanus, Grav. 



Front legs flavous-marked. 



Abdomen apically castaneous II. REPENTINUS, Grav. 



Abdomen not apically castaneous. 



Metathoracic spiracles sub-oval; pu- 

 bescence white 12. MKSOCASTANUS, Grav. 



Metathoracic spiracles linear ; pube- 

 scence piceous. 



Abdomen centrally red. 



Third flagellar joint elongate ; hind 

 tibiae reddish 13. MESSORIUS, Craz/. 



Third flagellar joint quadrate ; hind 

 tibiae not rufescent, often broadly 

 white 14. DIVISORIUS, Grav. 



Abdomen not red. 



Areola sub - quadrate ; abdomen 

 entirely black 15. HAERETICUS, W^rj;;/. 



Areola transverse ; abdomen not 

 entirely black 16. FLAVOCINCTUS, Dcsv. 



I. caeruleator, Zeit. 



Ichnennion caeruleator, Zett. I. L. 359, i. Amblyteles coeriileator, Holmgr. Ichn. 

 Suec. ii. 278, i 9 ■ A. caeruleator. Berth. Ann. Soc. Vt. 1895, p. 597, (5 9. /. niacu- 

 liventrii, Desv. Cat. 5, ? ; cf. Mori. E M.M. 1902, p. 122. 



A Stout species, blue-black throughout. Head slightly buccate, narrowed 

 behind the eyes ; clypeus apically truncate ; rarely with frontal orbits, 

 lateral circular dots on clypeus, and the palpi, flavidous. Antennae 

 slender, setaceous, attenuate towards the apices, the sixteenth flagellar 

 joints quadrate ; of ? white-banded, of $ with the basal flagellar joints 

 sub-cylindrical. Thorax blue-black, somewhat dull ; areola transverse or 

 sub-quadrate ; costulae complete in $ ; apophyses tuberculiform. Scu- 

 tellum not pale, scabrosely-punctate, somewhat flat. Abdomen dull, blue- 

 black with segments two to five narrowly ferrugineous apically, sometimes 

 the second and third segments dorsally ferrugineous ; fourth and fifth 

 strongly nitidulous ; post-petiole aciculate, bicarinate ; gastrocaeli trans- 

 verse, striate, very large and deeply impressed ; intervening space narrow, 

 not broader than centre of post-petiole ; ventral surface flavidous with 

 large fuscous patches. Legs normal, black or partly blue-black ; front 

 or anterior legs more or less fulvous or stramineous internally. Wings 

 slightly clouded, flavescent ; stigma rufescent ; tegulae blue-black. Length, 

 14 mm. 



The only British example of this species, recorded elsewhere only from 

 Sweden where the males occur in August and from Holstein, that I have 

 seen is the one described by Desvignes, which is from Stephens" collection; 

 no locality is quoted, but since it bears a label " fasciatus " in the latter's 

 handwriting, it is possibly the type of his IcJuieiimon fasciaUis (111. M. vii. 

 129), which is said to have been found, in July, in the New Forest, but he 

 makes no reference in his description to the distinctly cyanescent colora- 

 tion of this handsome insect. Desvignes' type is in the British Museum. 



