MANN: ANTS OF THE FIJI ISLANDS. 459 



long, in profile higher than long, little narrower above than at base, with nearly 

 straight anterior and posterior surfaces and broadly rounded dorsum. Post- 

 petiole about as long as petiole, rounded; from above a little broader than 

 petiole, rather narrowly rounded at sides. 



Shining. Mandibles finely punctate; coarse, foveolate, widely separated 

 punctures on head, (lacking on a narrow strip on front and vertex), thorax, 

 (lacking on most of mesonotal disc), and abdomen, more regular on gaster than 

 on other parts. Scapes sparsely punctate. 



Head, body, and appendages with copious, long, and very fine and silky 

 hairs, which are shorter and somewhat less abundant on the appendages. 



Fuscopiceous; legs and antennae lighter. 



VanuaLevu: Lasema. 



Described from one worker found beneath a stone. It is evidently 

 hypogaeic in habit. 



43. Tetramorium (Tetrogmus) simillimum (Xylander). 



MTjrmica simillima (Nvl.). Smith, List. anim. Brit. mus. Acul., 1851, p. 

 118, ^ . " 



Taviiini: Somo Somo. 



Occurs as a house-ant, probably throughout the islands. 



44. Tetramorium (Tetramorium) guineense (Fabricius). 

 Formica guineensis Fabr., Entom. syst., 1793, 11, p. 357, n. 31, ^ . 



Throughout the islands, most commonly in cultivated districts. 



45. Tetramorium (Tetramorium) tonganum Mayr. 

 Verh. Zool. bot. gesellsch. Wien, 1870, 20, p. 972, 976, ^ . 



Viti Levu: Waiyanitu. Vanua Levu: Lasema. Taviuni: Somo 

 Somo. 



Nests in small colonies in rotten wood. It is much less common 

 than the following species. 



46. Tetramorium (Tetr.\morium) pacificum Mayr. 



Verh. Zool. bot. gesellsch. Wien, 1870, 20, p. 972, 976, ^ 9 • 



Viti Levu: Nadarivatu, Waiyanitu, Nasoqo. Vanua Levu: 

 Lasema, Labasa, Wainunu. Ta\'iuni: Somo Somo, Nagasau. 

 Ovalau; Levuka. Kadavu: Buke Levu. 



