HYMENOPTERA. 16? 



nous. Thorax ovate, finely and sparingly punctured ; the first 

 node emarginate above, the second transverse; wings ample, 

 subhyaline, yellowish at their base, the nervures pale rufo~tes- 

 taceous, the stigma fuscous. Abdomen oblong, with the mar- 

 gins of the segments slightly depressed, and thinly sjjrinkled, as 

 well as the head, thorax and legs, with short pale glittering 

 hairs. 



Hab. Australia (Swan River). 



21. AtTA ANTARCTICA. B.M. 



Formica antarctica. White, Zool. Erebus S)- Terror, pt. 2. 



Female. Length 3g lines. — Ferruginous : head narrower than 

 the thorax ; the antennse dark fusco-ferruginous, with the basal 

 joints of the flagellum and the apex of the scape ferruginous. 

 Thorax : a black stripe on each side of the disk of the meso- 

 thorax, and an abbreviated central one in front ; the sutures of 

 the scutellum, post-scutellura, and a patch on each side of the 

 pectus, black; the legs more or less nigro-piceous, with the 

 articulations and the tarsi pale. The abdomen with a black 

 fascia on the apical margins of all the segments. 



Hab. New Zealand. 



Species of South America. — Sp. 22-29. 



22. Atta fabricator. 



Worker major. Length If line. — Head and thorax ferrugi- 

 nous ; the abdomen, nodes of the petiole, the femora and tibiae, 

 nearly black, the tarsi pale rufo-testaceous. The head very 

 large, emarginate behind, with the anterior portion finely striated, 

 the vertex being smooth and shining. Thorax narrowed behind, 

 and armed on the metathorax with two minute upright spines. 



Worker minor. — Kather smaller than the large worker, of a 

 more slender form ; the head of an ordinary size, and entirely 

 pale rufo-testaceous, and very smooth and shining ; the abdomen 

 rather darker than the head and thorax. 



Female. Length 3i lines. — The head, thorax and legs pale 

 rufo-testaceous ; the disk of the thorax with three longitudinal 

 fuscous stripes ; the margins of the scutellum and the base of 

 the metathorax fuscous ; the femora and tibiee fuscous, with 

 their base and apex pale ; the abdomen and nodes of the petiole 

 nearly black, the former at its extreme base, and the latter be- 

 neath, pale. 



Male. — Nearly as large as the female, jet-black, smooth and 



