468 CHRTSIDID-C. 



joining the lower carina ; top of the head narrow, convex. Thorax 

 massive ; the pronotum convex, anteriorly and posteriorly slightly 

 and widely emarginate, the sides from above sinuate; mesonotum, 

 scutellum, postscutellum and median segment convex, the medial 

 area on the first rectangular, the mesopleurse ending in a double 

 bluntly-angular fold beneath ; the produced posterior lateral angles 

 of the median segment acute; wings more or less dark fusco- 

 hyaline, nervures dark brown, teguiae green or bluish green ; legs 

 slender. Abdomen : the base with three broad short grooves, the 

 lateral grooves the wider; the 2nd and 3rd segments with a 

 distinct, rather broad, longitudinal medial carina ; the apical margin 

 of the 3rd segment with 4 triangular teeth, and an anteapical series 

 of 10 large fovese. 



<$ . Similar ; differing only in the non-exserted genitalia and in 

 the apical teeth being shorter and broader, the medial two wider 

 apart than in the $ . 



Length, $> 3 8-12; exp. 15-24 mm. 



Hob. The Indo-Malayan region, extending to Syria, Palestine, 

 Egypt and Asia Minor, and to China and Australia. 



A very variable species, both in size and colour, and found at all 

 elevations from sea-level to 10,000 ft. I found this cuckoo-wasp 

 very common in all parts of Burma, and parasitic on three species 

 of Eumenes E. conica, Fabr., E. petiolata, Fabr., and E. flavopicta, 

 Blanch. .In the Journal of the Bombay Nat. Hist. Society 

 (vol. xii, 1899, p. 585) I published the following note describing 

 an incident connected with CTirysis fuscipennis which I myself 

 observed : 



"Moulmein, April 24th. Noticed a half-finished mud-cell of 

 Eumenes, made on the woodwork of a window in my study. 

 While examining it closely with a lens, the wasp returned with a 

 pellet of mud, and buzzed rather angrily round my head. I moved 

 away a little, and watched her. After flying round for a while, 

 she alighted close to the half-finished cell, and, walking up to it, 

 stuck the mud she was carrying on to one of its sides, and proceeded 

 to work it into the wall of the cell, kneading it, so far as I could 

 see without approaching too close and frightening her, with both 

 jaws and forelegs. Then she retreated a little, as if to take a view 

 of her work, and in a few seconds flew away, to return with more 

 mud. It was easy to recognize the species : it was E. cornea, the 

 commonest of the Fossorial wasps in Burma. I watched for nearly 

 an hour while the nest was being completed. The nest then formed 

 the half of a hemispherical cell somewhat smaller in circumference 

 than a rupee, with a circular opening at the top. When the cell- 

 walls were so far finished, the wasp flew off, and was absent fully 

 half an hour. During her absence, one of those beautiful metallic- 

 green cuckoo-wasps, subsequently identified as Chry sis fuscipennis, 

 alighted near the nest, approached it cautiously, examined it quickly, 

 and then retreated behind the wooden framework of the window, 

 where it remained motionless, apparently on the watch. Presently 

 the Eumenes returned, carrying a green caterpillar. She alighted 



