318 WILLIAM MORTON WHEELER 
The specimens from Easter Island are all workers. I have added the 
description of the female from a series of females and workers taken by Mr. 
E. M. EHRHORN at Honolulu, Hawaii, the type locality. Forel described this 
form as a variety, but it evidently deserves to rank as a subspecies. 
The typical C. nuda was originally described from Fiji, and has been 
recently taken there by Dr. W. M. MANN. It is also recorded from India, Cey- 
lon, Queensland and New Guinea. The subsp. mauritanica Forel occurs in 
Tunis, Algiers, Cyprus and probably elsewhere along the eastern and southern 
littoral of the Mediterranean. — Easter Island. 
3. Tetramorium guineénse Fabr. %. — Probably of African origin, but 
now spread throughout the tropics of both hemispheres and occasionally com- 
mon in hot-houses in temperate regions. — Easter Island. 
4. Tetramorium simillimum F. Smith. §. — Like the preceding dis- 
tributed in all parts of the tropics and occurring in hot-houses in Europe and 
the United States. — Easter Island. 
5. Plagiolepis mactavishi Wheeler. § 2: — The female (undescribed) 
measures about 2,5 mm. and is more brownish yellow, more pubescent and 
much less shining than the worker; the gaster above darker brown with the 
bases and margins of the segments brownish yellow. Wings whitish with 
pale yellow veins. Head subrectangular, nearly as broad as long, only very 
slightly narrowed anteriorly, the posterior border straight, the eyes about half 
as long as the sides, the antennal scapes extending a distance equal to their 
greatest diameter beyond the posterior corners of the head. Thorax broader. 
than the head, elliptical, about 1 '/2 times as long as broad, the large meso- 
notum very flat, scarcely longer than broad; epinotum short, convex, without 
distinct base and declivity. Wings long, finely pubescent. 
The workers agree perfectly with the types from Moorea, Society Islands 
and specimens from Honolulu (EHRHORN) and Takao, Formosa (SAUTER) in my 
collection. This form is evidently very close to and perhaps merely a variety of 
P. alluaudi Emery, originally described from the Seychelles. — Easter Island. 
6. Prenolepis (Nylanderta) obscura Mayr. subsp. vaga Forel. §%. — 
A single specimen. The Type of the species was originally described from 
Sydney, New South Wales, where it was taken by the »Novara» Expedition. 
It is recorded also from Java and Hawaii. The subsp vaga and d¢smarckensis 
Forel were originally described from the Bismarck Archipelago, and the latter 
has been recently taken by Dr. W. M. MANN in the Salomon Islands. A paler 
form of the species occurs in New Guinea. — Juan Fernandez: Masatierra. 
7. Prenolepis (Vylanderia) bourbonica Forel subsp. skotisbergi subsp. 
nov. 
Worker. Darker than any of the described forms of the species, the 
body being black or very dark brown, the mandibles, antennal scapes and 
legs brown, the tarsi, knees and trochanters yellow. The head is rectangular 
and as broad in front as behind, as in the subsp. Aawazenszs Forel, but dis- 
tinctly smaller. The surface of the body is distinctly more shining than in 
the typical form or the subsp. dexgalenszs Forel, and the blunt hairs on the 
head, thorax and gaster are deep black and longer and coarser than in the 
