478 CHRYSIDID^:. 



front convex : facial cavity wide and moderately deep, margined 

 above by a short transverse carina, the anterior ocellus with a 

 longitudinal short carina on each side joining the transverse 

 carina ; antennae somewhat thick, the 2nd joint of the flagellum 

 remarkably long. Thorax : the prouotum transverse, slightly 

 sloped to the front and bearing a short longitudinal groove 

 anteriorly ; propleurae excavate ; mesonotum and scutellum convex, 

 mesopleurae rugose, the apex beneath acute, excavate and margined 

 by a carina ; postscutellum \a ith a broad triangular mucro at base ; 

 posterior lateral angles of the median segment strongly produced, 

 broad at base, acute at apex ; wings fuscous with, in certain lights, 

 a purple iridescence, nervures and tegulae dark aeneous brown. 

 Abdomen massive, transverse at base, with a medial somewhat deep 

 impression and a shallower impression on each side of it above, 

 sides slightly convergent posteriorly ; 2ud and 3rd segments 

 medially very slightly longitudinally carinate ; anteapical series of 

 fovese on tlie 3rd segment nearly obsolete, apical margin with 

 5 acute teeth placed on a wide arch. 



(^ . Similar, smaller ; head and thorax more massive and shorter 

 proportionately ; abdomen broader at apex, apical teeth slightly 

 smaller. 



Length, $ 11-15, d 9-11; ea-2). $ 18-26, d 19 mm. 



Hah. The Himalayas; Bengal; Tenasserim, Thaungyin valley 

 (BingJiam) ; Siam (Bingham). Described first from China. 



559. Chrysis libita, du Buysson, Jour. Bomh. N. H. Soc. x (1896), 

 pp. 475, 470, pi. 3, fig. 6. 



(S . Metallic green, the space round the ocelli and the median 

 area of the mesonotum metallic blue, the 2nd and 3rd abdominal 

 segments bluish green, antennae brown, the scape and the basal 

 two joints of the flagellum above green; legs green, tarsi dark 

 brown ; head, thorax and abdomen closely but not densely punc- 

 tured, the punctures of moderate size mixed with finer points, 

 increasing a little in size on the thorax posteriorly, on the head 

 they are closer and give a rugulose appearance, while on the 

 abdomen they run slightly into reticulations ; facial cavitj- finely 

 punctured, rugulose, medially longitudinally grooved in its upper 

 half, the groove smooth and polished within ; the sides of the facial 

 cavity covered with a soft white pubescence in part concealing the 

 sculpture ; pilosity brownish, short and fairly abundant except on 

 the basal two abdominal segments, where it is almost entirely 

 wanting. Head thick ; cl3''peus medially emarginate anteriorly ; 

 facial cavity deep, margined above by a transverse carina ; antennae 

 moderately long and thick, the 2nd joint of the flagellum a httle 

 longer than the 3rd, front and vertex convex. Thorax : the pro- 

 notum short, very declivous anteriorly, the sides a little emarginate 

 posteriorly, strongly convergent at their anterior third; propleurae 

 excavate ; mesonotum and scutellum gently convex ; mesopleurse 



