OF NT:W ZEALAND. 115 



lateral, o£ moderate size, and composed of a number of circular, con- 

 vex, separated facets ; antennse inserted forwards on the head, being 

 five-jointed in the workers and females (male unknown). Thorax 

 oblong, much narrower than the head, widest anteriorly, and with a 

 short, acute tooth at the margins of the prothorax ; the mesothorax 

 has also a small lateral tooth ; the metathorax with two acute spines ; 

 legs simple. Abdomen ovate, and binodosc ; the first node petiolated 

 and clavate, the second globose. 



O. PERPLEXus. Smith, Trans. Ent. Soc, 1876, ^j. 491. 



Female. Pale ferruginous, the head closely and finely punctured ; 

 antennse and mandibles paler than the head. Thorax shorter and 

 narrower than the head ; the prothorax rounded in front ; the scutel- 

 lum with the hinder margin rounded, somewhat projecting over the 

 metathorax, which is armed with two compressed, acute spines; the 

 entire thorax closely and finely punctured ; the legs paler than the 

 thorax ; the anterior tibiae with a spine at their apex, the intermediate 

 and j)osterior pair simple. Abdomen slightly ovate, nearly globose ; 

 the first node petiolated and rounded, the second semi-globose, forming 

 apparently the base of the abdomen. Length, It lines. 



Worker. The same size as the female, differing principally in the 

 form of the thorax, the anterior margin of the prothorax being rounded ; 

 the sides oblique, the upper surface being kite-shaped, and posteriorly 

 truncate, the angles of the truncation being armed with a spine ; 

 closely and finely punctured above ; the legs and abdomen as in the 

 female. 



Mercury Bay. 



O. ANTENNATUs. Smith, Trans. Ent. Soc, N.S., Vol. II., p. 238, 

 pi. 21, f. 9 fJan., 1854;. 



Worker. Pale ruf o-testaceous ; the mandibles armed at their 

 extremity with two long spines or teeth, the upper one simple, the 

 lower one forked at the apex ; the anterior angles of the thorax have 

 a short acute spine, a second short one is situated about the middle at 

 the sides, and the metathorax is armed with two longer slender acute 

 spines ; legs elongate, very pale testaceous. Abdomen nearly rotundate, 

 slightly flattened ; the first node elongato-elavate, the second globose. 



New Zealand (British Museum). 



Sub-Family — Attid^. 

 The number of joints in the maxillary paljn varying from four to 

 two, those of the labial palpi from three to two ; the ocelli usually 



