08 me. smith's catalogue of hymenopterous insects 



3. Mygnimia ducalis. M. atra; alis nigris, anticis fascia argentata 

 ornatis. 



Black ; the abdomen blue-black with a fine silky pile ; the third and 

 following joints of the flagellum fuscous, the tips of the joints ferru- 

 ginous ; the clypeus, the scutellum and post-scutellum, obscurely 

 fusco-ferruginous ; the metathorax transversely striated, and truncate 

 at the apex; the margin of the truncation raised; the wings bi own- 

 black with bright violet and purple shades ; a broad silvery band 

 crosses the anterior wings beyond their middle, the band consisting of 

 fine silvery pile. Female. Length 1 inch f . 



Hab. Malacca (Mount Ophir). 



4. Mygnimia princeps. M. atra; antennis flavis, alis nigris, anticis 

 fascia subhyalina ornatis. 



Female. Length 1 inch 10 lines. Black ; with obscure shades of blue, 

 the abdomen blue-black, covered with a fine pile which partakes of 

 purple or blue shades in different lights. The scape of the antennae 

 ferruginous in front, the flagellum yellow ; a ferruginous line border- 

 ing the anterior margin of the clypeus. Thorax : the hinder margin 

 of the scutellum obscurely ferruginous; the metathorax coarsely 

 transversely striated; the posterior tibiae and basal joint of the tarsi 

 with a fine changeable ferruginous pile within ; the wings brown- 

 black, with a broad sub-hyaline transverse fascia beyond the middle, 

 the fascia tinged with yellow. 



Hab. Borneo (Sarawak). 



5. Mygnimia iridipennis. 



Female. Length 1 inch. Black ; the clypeus densely covered with a 

 short dense black pubescence, slightly emarginate in front ; the 

 mandibles obscurely ferruginous in the middle. Thorax : the wings 

 with a splendid lustre of coppery and violet tints, beneath, equally 

 vivid in colour ; the metathorax coarsely striated transversely ; the 

 pro- and meso-thorax with a short black velvety pubescence. Abdo- 

 men sub-opake, with shades of blue in certain lights. 



Hab. Malacca. Sarawak. 



Fam. SPHEGLLL3E. 

 G-en. Ampulex, Jurine. 



1. Ampulex hospes, Smith, Cat. Hym. pt. iv. p. 272. 



The particulars in which this remarkable species differs from those with 

 which I have associated it, would perhaps warrant the establishment 

 of a new genus, but only a few specimens have yet been obtained ; and 

 although in all, the first transverse cubital nervure is obsolete, still it 

 is a circumstance of frequent occurrence in the genus, particularly in 

 the typical species A. eompressa. The antennae are much stouter and 

 shorter, and the posterior angles of the thorax without spines, in all 

 which particulars it differs from the rest of the genus. 



