366 bulletin: museum of comparative zoology. 



head longer, the occipital border distinctly though shallowly concave 

 instead of truncate, and the frontal lobes divided by a broad triangular 

 spac^. Type.— ^l. C. Z. 9,183. 



95. Plagiolepis longipes (Jerdon). 

 Formica longipes Jerdon, Madras journ. litt. sci., 1851, 17, p. 122, ^ . 



Santa Cruz: Graciosa Bay. Throughout the Solomons. 



Plagiolepis loncjipcs occurred in all the localities visited; it belongs 

 to the group of insects that is rapidly being distributed throughout the 

 world, and associated indirectly with man. Like the other members 

 of this anthropopliilus fauna, it prefers to nest in cleared land, under 

 stones, logs, or debris, or in the ground. I frequently found it in the 

 forest, but on every occasion, it is interesting to note, there were signs of 

 former native A'illages or clearings, indicating that the species invariably 

 establishes its colonies in the vicinity of human habitations. 



96. Prenolepis (Nylanderia) longicornis (Latreille). 



Formica longicornis Latr., Hist. nat. fourmis, 1802, p. 113, ^ . 



Santa Cruz: Graciosa Bay. Santa Anna. 

 This species was found in all the localities visited. 



97a. Prenolepis (Nylanderia) minutula Forel, subsp. 



atomus Forel. 



Mitt. Zool. mus. Berlin, 1901, 2, heft 1, p. 25, ^ . 



Ugi: Pawa. Ysabel: Fulakora. 

 Occurs in small colonies beneath stones. 



98. Prenolepis (Nylanderia) vividula Nylander. 



Acta Soc. sci. Fenn., 1846, 2, p. 900, ^ 9 d". 

 Ugi : Pawa. 



