COLLECTED AT BACHIAN, KAISAA, ETC. 125 



base outside, and the anterior tarsi, yellow : the outside of the basal 

 joint of the latter black. Abdomen : smooth and shining, reflecting 

 prismatic colours in different lights ; the apical margins of the first 

 and three following segments with narrow yellow fasciae. 

 Hab. Bachian. 



Farn. BEMBICID^, Westw. 

 Gen. Bembex, Fabr. 



1. Bembex melancholica. Smith, Cat. Hym. Ins. iv. 328. 47. 

 Hab. Bachian ; Ai-u ; Sumatra ; Singapore ; Madras. 



Fam. CEABEONID^, Leach. 



Gen. Tetpoxtlon, Latr. 



1. Trypoxylon providum. T. nigrum; clypeo argentato-pubes- 

 cente ; alls hyalinis u'idescentibus. 



Female. Length 10 lines. Black, smooth and shining; the clypeus, 

 face, and emargination of the eyes with bright silvery pubescence ; the 

 clypeus produced and rounded anteriorly ; the mandibles ferruginous, 

 with their base yellow. The thorax covered with long silvery-white 

 pubescence beneath and on the sides ; the metathorax with a sub- 

 enclosed space at its base, which has a centi-al longitudinal shallow 

 groove transversely wrinkled ; at the verge of the enclosed space is a 

 deep fossulet which narrows and runs to the insertion of the petiole of 

 the abdomen ; the wings hyaline and iridescent ; the anterior tibiae 

 fulvous in front, and the tarsi pale testaceous ; the basal joint of the 

 intermediate tarsi pale. Abdomen covered with a thin fine change- 

 able silvery pile ; the petiole elongate. 



Hab. Bachian. 



Gen. GoETTES, Latr. 



1. GoRYTES BASALis. G. niger ; abdominis basi, mandibulis pedibus- 

 que ferrugineis ; alls hyalinis, marginibus anterioribus fuscis. 



Female. Length 4| lines. Black ; the head delicately punctiu-ed ; the 

 clj^eus rugose ; the sides of the face and the cheeks with a silvery 

 pile ; the mandibles ferruginous in the middle, longitudinally striated, 

 and bidentate at the apex ; the antennae obscurely fulvous beneath. 

 Thorax : closely punctured and thinly covered with cinereous pile ; 

 the metathorax coarsely rugose, the enclosed space at its base longi- 

 tudinally striated ; the wings hyahne, with a dark cloud in the mar- 

 ginal cell ; the legs ferruginous, with the intermediate and posterior 

 coxae black behind. Abdomen smooth, shining, and covered with a 

 changeable silvery pile ; the first segment and base of the second 

 above ferruginous : both entirely red beneath. 



Hab. Amboyna. 



