128 me. smith's catalogue of hymenoptebous insects 



changeable hues, partaking of tiuts of blue, purple, violet or green, 

 in different lights; the three basal segments deeply emarginate above, 

 with central longitudinal depressions extending to their base ; the ovi- 

 positor thick and pubescent, two-thirds of the length of the abdomen. 



Hab. Borneo (Sarawak). 



This beautiful insect appears to belong to the genus Epistenia, established 

 by Westwood in Griffith's 'Animal Kingdom;' if not so, it is very 

 closely allied. 



Fain. CHEYSLDID.E, Leach. 

 Gen. Hedtcheum, Lair. 



1. Hedychrum orientale. H. viridi-eyaueum, eapite thoraceque 

 coufertissime punctulatis, abdominis segmenti tertii margine apicali 

 arcuato integerrimo, alis subhyalinis. 



Length 2^ lines. The head and thorax very coarsely punctured, the 

 abdomen more delicately so ; the abdomen of a bright green, with 

 blue tints in different lights, the flagellum fusco-testaceous, the man- 

 dibles ferruginous at their apex ; the deep concavity of the face, in 

 which the scape rests in repose, delicately transversely striate; the tooth 

 at the lateral angles of the metathorax acute; the abdomen nigro- 

 aeneous beneath, with a thin, short, glittering pale pubescence, the 

 apical segment widely emarginate. 



Hab. Singapore. 



Gren. Chrysis, Linn. 



2. Chrysis malachitica. C. crassissime punctata viridi-cyanea, 

 thorace viridi-aureo, alis fusco-hyalinis, abdominis segmentis apicah- 

 bus dentibus sex armatis. 



Length 4^ lines. Metallic green, splashed with gold on the thorax and 

 sides of the abdomen ; the flagellum, mandibles, and tarsi black ; the 

 hinder margin of the vertex tinged with blue. The disk of the thorax 

 blue ; the tegulse and nervures of the wings with a purple tinge ; the 

 wings subhyaline and iridescent ; the lateral posterior angles of the 

 metathorax acute 5 the post-scutellum produced, the apex truncate. 

 Abdomen: more finely punctured than the head and thorax, but most 

 strongly so at the base ; the basal margin with a deep excavation on 

 each side, the lateral angles somewhat produced and obtuse ; the basal 

 margin of the second segment blue ; the apical margin of the third 

 segment armed with six acute teeth. 



Hab. Borneo (Sarawak). 



3. Chrysis vestigator. C. viridis nitens purpureo variegata, 

 punctatissima, abdominis segmentis margine basali nigro-seneis, ano 

 tridenticulato. 



Length 3| lines. Green, with shades and spots of deep blue ; the tarsi, 

 flagellum and mandibles, black ; the head and thorax coarsely and 



