160 



HYMENOPTERA. 



27. PSEUDOMYRMA PILOSA. 



Worker. Length 2^- lines. — Black : the mandibles, clypeus. 

 carinjE at the base of the antennae, the antennae, tibiae, tarsi and 

 tips of the femora, pale rufo-testaceous ; the entire insect covered 

 with fine short silky pubescence ; the head prominent before the 

 eyes ; the thorax flattened above, the lateral margins with a sharp 

 edge ; the divisions between the parts of the thorax strongly 

 marked. Abdomen : the first node with a thick petiole, the 

 second somewhat oblong ovate, narrowest at the base ; the ab- 

 men elongate-ovate, pointed at the apex. 



Hab. Borneo. 



28. PsEUDOMYRMA CaPENSIS. 



Worker. Length 3 lines. — Reddish - yellow, smooth and 

 shining. Head oblong-quadrate, emarginate behind ; eyes large, 

 black and ovate; only two distinct ocelli. Thorax oblong, widest 

 in front, flattened above or very slightly convex, the lateral edges 

 acute ; the prothorax narrowed to the mesothorax, the latter and 

 the metathorax forming an elongated oval above. Abdomen : 

 the first node of the peduncle of a clavate form, the second semi- 

 globular, the abdomen acute at the apex. 



Hah. Cape of Good Hoi)e. 



29. Pseudomyrma Natalensis. 



Female. Length 3| lines. — Reddish-yellow : the tips of the 

 mandibles and the apex of the abdomen blackish. Head 

 oblong-quadrate, the posterior angles rounded ; eyes large and 

 ovate, placed on each side of the head, a little behind the middle, 

 of a pale ashy-grey. Thorax oblong ; the anterior margin trans- 

 verse or very slightly arched ; the sides of the thorax nearly 

 parallel ; the metathorax convex and rounded behind. Abdomen : 

 the first node petiolated, the petiole short, with a compressed tooth 

 at the extreme base beneath, somewhat pear-shaped and flattened 

 above ; the second node subglobose. 



Hah. Port Natal. 



Genus 10. DACETON. 



Formica, pt., Latr. Hist. Nat. Fourm. 244 (1802). 

 Atta, pt., Guer. Icon. Reg. Anim. 421 (1835-8). 



1. DaCETOX ARMIGERIM. 



Formica armigera, Latr. Hist. Nat. Fourm. 244. I), f. 58 § . 



