74 MR. smith's catalogue ot hymenopteroits insects 



is formed, as it were, of three nodes, each being a little longer 

 and wider than the preceding. 



Gen. Ceeapachys. 



Body elongate ; head narrowed before and behind the eyes ; eyes ovate, 

 lateral, placed about the middle of the head ; antennce short, incras- 

 sate; mandibles triangular, obsoletely toothed within. Thorax ob- 

 long-quadrate, strangulated in the middle. Abdomen : oblong, with 

 a deep strangulation between the first iind second segments. 



1. Cerapachys ANTENNATUS. C. atcrrimus, uitidus ; antcnuis brcvi- 

 bus, crassis; thoraceoblongo-quadrato; abdomine elongato, nodo qua- 

 drato ; abdominis segmentis primo et secundo incisura separatis. 



Worker. Length 3i lines. Jet-black, smooth and shining ; antennae 

 one-third longer than the head; the scape short and incrassate, cla- 

 vate ; the flagellum incrassate, the joints short and transverse, except 

 the apical one, which is as long as the four preceding joints ; the 

 head depressed on each side in front of the eyes ; the antennae 

 inserted at the anterior margin of the head, each at the side of an 

 elevated carina ; the mandibles, flagellum and apex of the scape ob- 

 scurely ferruginous ; the posterior margin of the vertex slightly emar- 

 ginate its entire width, a few scattered minute punctures on the 

 vertex, and a small fossulet in the middle between the eyes. Thorax : 

 oblong-quadrate, with a few scattered punctures above, and a few short 

 erect hairs ; the tips of the femora and tarsi, and the apical joints of 

 the latter, pale rufo- testaceous; the basal joint of the anterior tarsi 

 bent ; the calcaria white. Abdomen elongate ; the peduncle quadrate, 

 a little narrower than the first segment of the abdomen, which has 

 the sides slightly rounded; a deep strangulation between the first 

 and second segments ; the apex obliquely truncated, the margins of 

 the truncation finely denticulated. 



Hab. Borneo (Sarawak). 



2. Cerapachys oculatus. C. pallide fuscus ; oculis magnis, atris; 

 antennis pedibusque pallide testaceis ; alis hyalinis ; petiolo bi-arti- 

 culato, binodi. 



Male, Length 2\ lines. Pale-brown, with dark stains on the sides of 

 the thorax; head oblong-quadrate, the mandibles forming a trian- 

 gular projection; the eyes large and prominent, situated anteriorly 

 on the sides of the head ; the ocelli large, placed in a dark stain 

 on the vertex ; the mandibles, antennae, and legs, pale testaceous. 

 The thorax oblong-ovate; -the wings hyaline and iridescent, the 

 nervures pale testaceous; the basal node of the petiole narrow at 

 the base, widened to the middle, and again narrowed to the apex, 

 the widest part with a sharp edge, or carina ; the second node ovate ; 



