Indo-Chinese Ilymenoptera. 89 



fu'catis; alls flavo-byalinis, anticis apice leviter iufuscatis, venis 

 nigris. 

 Long. 17 mm. 



? . Clypeus finely punctured, transverse at tlie apex, 

 labrum broadly rounded and sparsely oovcred with pale hairs. 

 Head punctured-rugose, a little swollen behind the eyes ; 

 verticrtl area broader than lonf^, the lateral furrows distinct. 

 Kycs veiy distinctly convergent towards the clypeus. An- 

 tenna? nine-jointed ; fourth and fifth joints subequal, com- 

 bined about equal in length to the third. Thorax rather 

 closely punctured ; scutellum strongly convex, obliquely 

 sloped from the base, rather abruptly truncate posteriorly. 

 Propodoum with a longitudinal carina in the middle at the 

 base; the basal tergites smooth, the fourth and two following 

 tergites rather closely punctured on the- sides. Hind coxa? 

 rather long ; hind femora stout, scarcely reaching to the apex 

 of the abdomen ; joints of the hind tarsi distinctly arcuate 

 beneath, the hind metatarsus about equal in length to the 

 four apical tarsal joints combined ; tarsal ungues strongly 

 bifid. Humeral cell divided far bej'ond the middle by a 

 strongly ol^lique nervure ; basal nervure half as far from the 

 base of the cubitus as that is from the base of the radius. 



Hah. Chapa, Tonkin, May and June 1916. 



This is congeneric with Siohla mooreana, Cam., the type 

 of Siohla, which belongs to the Tenthredinina?, and is allied 

 to Macrophrja, though well distinguished by the oblique 

 dividing nervure of the humeral cell. The genus is identical 

 with Eiicarsioneura^ Konow, wliich must sink. 



Colochelt/na fulva, sp. n. 



$ . Fulvo-ochracea ; flagello, articulis prime toto secundoquo basi 

 exceptis, tibiisque tarsisque posticis nigris ; maiidibulis tlavin, 

 apice nigris ; clypeo, labro, propodeo, tibiisque tarsisque anticis 

 intermediisque tlavia ; alis tlavis, veuis fulvis. 



Long. 17 mm. 



?. Head narrower than the thorax; clypeus broadly 

 truncate at the apex; t-yes converging moderately towards 

 the clypeus, very narrowly separated from the base of the 

 mandibles ; third joint of the antennae nearly as long as the 

 three following joints combined, the joints bt youd the fourth 

 gradually decreasing in length; vertical area half as broad 

 again as long. Head and thorax closely punctured and 

 clothed with very short golden hairs ; the vertical area 

 divided by a low longitudinal carina ; scutellum strongly 



