PHYTOPHAGOUS ANG PARASITIC HYMENOPTERA. 79 



12. — Microdui< greeni^ sp. nov. 



Ferruginous, the vertex and more or less of mesonotum may 

 be inf uscated or blackish, antennal scape rufous ; the basal half of 

 the flagellum black, the apical testaceous, tinged with yellow : 

 wings yellowish hyaline to the base of the stigma, beyond that 

 dark fuscous, the first and second cubital cellules and a curved 

 cloud below hyaline ; the stigma and apical nervures black ; the 

 hind tarsi inf uscated; the basal three segments of abdomen and 

 the base of the fourth strongly closely longitudinally, striated.? 



Length 10 mm. terebra 9 mm. 



Kandy, July and August. 



Head smooth, sparsely pilose ; the lower part of the front 

 deeply bifoveate ; the space separating the two foveas triangular. 

 Thorax smooth and shining ; the parapsidal furrows deep, smooth. 

 On the base of the metanotum is a curved furrow forming a 

 closed area and having a straight keel in the centre, dividing 

 it into two. From its centre two stout keels run to the apex of the 

 segment forming an elongated area, obliquely narrowed at the 

 base. FleurcB smooth, the metapleurse tlensely pilose, the lower 

 edge bordered by a stout waved furrow. Mesosternal furrow 

 wide, deep, widened ac the apex and with some stout transverse 

 keels. 



This species is probably variable as regards the amount of 

 black on the vertex, thorax, and apex of abdomen. The antenna3 

 are longer than the body. 



Chelonin^. 



13. — Gheluuus tricoloratus, sp. nov. 



Black, the antennal scape, and pedicle rufous : the anterior 

 legs, middle coxae and trochanters, and posterior trochanters ruf o- 

 testaceous, two spots near the base of the abdomen and a broad 

 band at the base of the hind tibite pale testaceous. Wings hyaline 

 to the base of the radius, fuscous beyond it ; the nervures and 

 stigma black. Antennae 23-jointed, 9. 



Length 4 mm. 



Trincomalee Col. Yerbury. 



Head and thorax closely finely rugose, covered with a minute 

 Avhite pubescence. Mesonotum closely reticulated. Scutellum 

 with some, not very distinct longitudinal striae. Metanotum 

 irregularly reticulated, more strongly on the apex than on the 

 base of the basal division ; the apical slope shining, smooth, 

 reticulated above. Base of abdomen longitudinally striated ; the 

 strias are not numerous and become weaker towards the apex. 

 Pleurae closely reticulated. 



