104 RPOLIA ZEYLANICA. 



from shortly above the jiiicklle, mesosternum, tubercles, the apices 

 of all the abdominal segments — the line on the fourth interrupted^ 

 pale yellow. Legs pale f uhous . the anterior largely tinged with yellow , 

 the apex of the hind femora, base of hind tibiae, their apex broadly 

 and the tarsi, black. Wings hyaline, the stigma and nervures 

 black,?. 



Length 10 mm. 



Peradeniya. 



Scape below and a broad ring on the tiagellum white. Head 

 smooth and shining, the face and clypeus sparsely punctured 

 and liaired. Thorax smooth and shining, except the metapleurae 

 and tlie spiracular area which are closely strongly retjculated, 

 punctured ; the areola with a stout keel in the centre of the apical 

 two-thirds ; the metapleur* thickly covered with white pubescence. 

 Post-petiole and the second to fourtli abdominal segments closely 

 punctured. 



Tanyphatnus, gen. no v. 



6. Areola open behind, more than twice longer than wide, separ- 

 ated from the lateral arese, the apex almost transverse, the top of the 

 posterior median area being bluntly rounded. Apex of metano- 

 tum with a gradually rounded slope. Scutellum not flat, roundly 

 depressed at the base and apex. Post-petiole in the centre finely, 

 closely, longitudinally striated; gastrocoeli deep; there are no thy- 

 ridia. There are eight abdominal segments ; cerci long, stout ; 

 the genital armature much larger than usual ; the ventral fold 

 extends to the apex of the fourth segment. Areolet 5-angled ; the 

 disco-cubital nervure almost broken by a stump of a nervure. Apex 

 of clypeus transverse, not separated from the face : labrum largely 

 projecting. Upper tooth of mandibles much longer than lower, 

 projecting twice the length of the latter beyond it ; it is sharply 

 pointed. Spiracles about four times longer than wide. 



The temples are moderately broad, rounded ; malar space short ; 

 the antennae are not much longer than the abdomen, serrate. 

 Abdominal petiole slender, longish, the post-petiole not clearly 

 separated. Legs moderately stout. Abdomen slender, more than 

 twice the length of the head and thorax united ; the sides of the 

 segments spotted with yellow ; the last segments not spotted. 



This genus, or sub-geni^s, has the striated post-petiole of Ichneu- 

 mon sensu sti'. Comparing it with /. lucUitorius , the type given for 

 Ichneumons, sir., its areola is longer, narrower, andnotof equal width, 

 it being wider at the base and narrowed roundly in the middle ; 

 the metanotum has a more gradually rounded slope ; the first 

 segment of the abdomen is more slender, especially at the apex; the 



