of Ilymenonterous Insects of New Zealand. 481 



abdomen ovale, smootli and sinning; the first joint of the 

 petiole clavate, the second globose. 



j^Xale. — Length '2\ lines. Jet black, smooth and shining ; 

 Head snbopaque, pnbescent and longitndinally striated. 

 The mesothorax with a few abbreviated stride in front, and, 

 as Avell as the scntellnm and metathorax, smooth and 

 shining; the latter deeply snlcated posteriorly; wings sub- 

 hyaline and iridescent, Avith the nervures testaceous. Ab- 

 domen and nodes of the petiole smooth and shining. 



Taken at Peel Forest, at Oxford, and at Lake Cole- 

 ridge. 



Tetramorium striatum. 

 Female. — Length 4 lines. Black: head nearly as wide 

 as the thorax, and longitudinally striated ; the mandibles 

 bidentate, and, as well as the apex of the apical joint of 

 the antenna;, ferruginous ; the extreme apex of the scape, 

 and also of the base of the flagellum, usually more or less 

 ferruo-inous. Thorax : longitudinally striated, the base of 

 the metathorax finely transversely so; the metathorax 

 bidentate, with a deep, smooth sulcation between ; the tro- 

 chanters, tips of the femora, and the tarsi, rufo-piceous. 

 Abdomen smooth and shining, and having a few scattered 

 pale fulvous hairs ; the nodes of the petiole striated. The 

 wings subhyaline, the nervures fusco-ferruginous ; the 

 thorax oblong-ovate. 



Worker. — Length 2^ lines. Black, sometimes more or 

 less obscurely rufo-piceous ; the head smooth and shining ; 

 the mandibles and front ferruginous, varying much in the 

 depth of colouring ; the apical joint of the antennae more 

 or less rufo-piceous. Thorax oblong, strangulated in the 

 middle; the prothorax rounded in front, slightly trans- 

 versely striated above, as well as the metathorax, Avhich is 

 bidentate ; the legs more or less brightly fusco-ferruginous. 

 Abdomen smooth and shining, ovate, and Avith a few 

 scattered pale hairs. 



]\/[ale. — Length Splines. Black and shining; the head 

 pubescent, transverse, longitudinally striated, Avith the eyes 

 prominent. The mesothorax and scutellum longitudi- 

 nally striated, the former smooth and shining anteriorly ; 

 the metathorax shining, and longitudinally sulcate ; the 

 Avino-s subhyaline, the nervures testaceous. Abdomen : the 

 first^ode of the petiole clavate and slightly striated, the 

 second also striated and globose ; the abdomen smooth and 

 shininsr. 



