COLLECTED IN BORNEO, ETC. 65 



obliquely striated ; the striations crossing the sulcations, but termina- 

 ting opposite the hinder margin of the eyes ; the depression on the 

 sides of the head striated, the striation becoming obsolete at the sides 

 of the head. The thorax transversely striated, the metathorax most 

 strongly so. The scale of the abdomen conical, terminating above in 

 an acute spine ; the abdomen very smooth and shining, the apex pale 

 testaceous. 



Hab. Singapore. 



This species bears a strong resemblance to the type of the genus, O. 

 hcematodes, a South American insect ; but that species has the head 

 shorter, and the vertex delicately striated ; the antennae are shorter, 

 the joints shorter : specimens which I consider to be identical with 

 the present species, are in the collection at the British Museum, from 

 Birrnah and Singapore. 



2. Odontomachus rugosus. O. rufescenti-fuscus ; capite supra lon- 

 gitudinaliter striato, lateribus kevibus nitidis, thorace pedunculoque 

 rude rugosis. 



Worker. Length 3 lines. Head of a red-brown, the mandibles and 

 scape rather paler, the rlagellum pale testaceous ; the mandibles much 

 narrowed at their base, their inner edge finely serrated, terminating in 

 two long blunt teeth which are abruptly curved at right angles with 

 the jaws ; the head a little longer than broad, deeply emarginate be- 

 hind, longitudinally striated above, the sides smooth and shining. 

 Thorax darker than the head, and coarsely rugose ; the legs ferru- 

 ginous. The node of the abdomen conical and rugose ; abdomen 

 smooth and shining and of a dark rufo-piceous colour, the apex pale. 



Hab. Singapore. 



This is a very remarkable and distinct species, both in sculpture and 

 form. 



Gen. Ponera, Latr. 



1. Ponera versicolor. P. purpureo et violaceo variegata seu ob- 

 scure cerata ; capite, thorace abdominisque basi profunde striatis ; 

 nodo spinis duabus parvis armato. 



Worker. Length 4% lines. Black, with purple, violet and green tints 

 in different lights : the head deeply striated longitudinally, the strise 

 terminating at the base of the clypeus, the anterior margin of which 

 is subangular ; the mandibles obscure ferruginous, their inner edge 

 toothed, the teeth being alternately one large and one small ; the 

 mandibles finely striated; the eyes ovate, of moderate size, placed 

 laterally about the middle. Thorax : in front with deep circular 

 striae, behind which are a few longitudinal ones on the disk ; the sides 

 and posterior portion obliquely striated, the apex transversely so ; the 

 calcaria and apical joints of the tarsi ferruginous. The node of the 

 abdomen incrassate, rounded in front and above, and truncate behind, 



