wheeler: the ants of borneo. 59 



34a. Leptogenys (Lobopelta) diminuta var. laeviceps (Smith). 



Ponera laeinceps Smith, Joiirn. Proe. Linn. soc. London. Zool., 1857, 2, p. 69, ^ . 



Ponera simillima Smith, ibid., 1861, 5, p. 105, ^ . 



Lohopelta diminuta var. laeviceps Emery, Ann. Mus. civ. Geneva, 1887, ser. 2, 



5, p. 433, S . 

 Leptogenys (Lobopelta) diminuta var. laeviceps Emery, Gen. Ins. Ponerinae, 



1911, p. 103. 



Type-localUy: Sarawak, Borneo (A. R. Wallace). 

 Two workers from Kuehing (John Hewitt). 



*35. Leptogenys (Lobopelta) borneensis, sp. nov. 



Worker. Length: 9 mm. 



Long and slender. Head about ^ longer than broad, a little broader in 

 front than behind, with nearly straight sides in front, rounded behind, with 

 rather deeply excavated occipital border. Eyes rather small, situated a 

 distance equal to their length from the anterior corners of the head. Mandibles 

 rather large, triangular, with deflected tips, distinctly concave lateral, dentate 

 apical and denticulate basal borders. Clypeus strongly carinate, its anterior' 

 border entire, projecting as a membranous, rather narrowly rounded lobe. 

 Antennae long and slender; scapes extending about I their length beyond the 

 posterior corners of the head; all the funicular joints much longer than broad; 

 first joint a little more than half as long as the second, second sHghtly longer 

 than the third. Thorax long and slender. Pronotum slightly flattened above, 

 longer than broad, mesonotum shorter and much narrower and lower than the 

 pronotum, its dorsal outline very feebly concave; epinotxrm scarcely broader 

 than the mesonotvim, but very distinctly higher and longer, the base straight 

 and horizontal, twice as long as the vertical declivity into which it passes 

 through a curve without any trace of an angle. The sides of the declivity are 

 feebly marginate. Each epinotal stigma is situated in a sharply defined 

 eUiptical depression. Petiole from above fully twice as long as broad, nar- 

 rowed in front, laterally compressed. In profile the node is longer than high, 

 its anterior border long and convex, the posterior border straight, the apex 

 blunt, the ventral surface of the petiole sinuous in the middle. Gaster small. 

 Legs long and slender. 



Shining, very sparsely and very finely punctate; mandibles very finely and 

 densely striate. 



Hairs whitish, short, sparse, and erect on the body, more abundant and 

 more oblique on the appendages. Pubescence pale, present only on the 

 funiculi and tarsi. 



Castaneous; mandibles, clypeus, legs including coxae, neck, prosterna 



