HYMENOPTERA OP THE HAWAIIAN ISLANDS. 237 



Archipelago. The nests are formed under stones. A 

 very widely-distributed species. Found in hothouses in 

 Europe. 



59. Solenopsis gemhiata. 



Atta geminata, Fab. Syst. Piez. p. 423. 



Hab. HonolulUj in palm-trees. 



OXYURA. 

 60. Scleroderma polynesialis. 



Scleroderma polynesialis, Saunders, Trans. Ent. Soc. i88r, p. ri6. 



Hab. Haleakala, Maui, at an elevation of 4000 feet. 

 61. Sierola testaceipes. 



Sierola te&taceiins, Cameron, Trans. Ent. Soc. 1881, p. 556. 



62. Sierola monticola, sp. nov. 



Black; anterior tibiae and tarsi testaceous, the tips of 

 the latter black; the base and apex of hind tibiae fusco- 

 testaceous, the tarsi fuscous, paler in the middle; the 

 extreme base and apex of basal joint of antennae and the 

 second to fourth joint testaceous. Antennae scarcely so 

 long as the thorax ; the basal joint pear-shaped, narrowest 

 at the base, a little longer than the third and fourth 

 united; second joint a little longer than third, and of the 

 same thickness ; second to fourth longer and thicker than 

 the other joints ; the apical seven more moniliform than 

 the others, and a little longer than broad ; the last longer 

 and thinner than the penultimate. Head smooth and 

 slightly alutaceous ; mandibles piceous at tip, faintly stri- 

 ated; thorax smooth, a little alutaceous. The abdominal 

 segments laterally at their junction narrowly milk-white. 



