Vot. II, Pr. I1] WHEELER—GALAPAGOS ISLANDS ANTS Dif 
16. Prenolepis (Nylanderia) vividula guatemalensis itinerans 
Forel. 
Prenolepis guatemalensis Forel var. itinerans Forel, Mitth. 
Naturh. Mus. Hamburg 18, 2. Beih. 1901, p. 81 &. 
A single worker from Indefatigable Island and two de- 
alated females from Cormorant Bay, Charles Island, taken in 
October, 1905, by F. X. Williams. Two workers, a male and 
four females, taken by the “Albatross” in 1899 (U. S. Nat. 
Mus.), but labelled only “Galapagos Islands,” also belong to 
this variety, which was originally described from specimens 
introduced into Hamburg with plants from Brazil. I have 
compared the Galapagos specimen with cotypes given me by 
Prof. Forel. 
17. Prenolepis (Nylanderia) fulva nesiotis, new subspecies. 
Worker. Length 1.6—2 mm. 
Differing from all the known forms of fulva in its small 
‘size and in the shape of the thorax, the mesonotum being 
somewhat more convex and descending more abruptly behind 
to the constriction. On the other hand, the epinotum is dis- 
tinctly less convex, its base about half as long as the declivity, 
which is straight in profile. Scapes extending two-fifths their 
length beyond the posterior border of the head. Sculpture 
and pubescence much as in the typical fulva, but the pilosity 
is less abundant and somewhat finer, especially on the legs 
and scapes. Dark brown, mandibles, clypeus, front of head, 
scapes, first funicular joint, legs and mesonotum paler and 
more reddish. 
Female (dealated). Length 4 mm. 
Differing from the worker in pilosity, the stiff erect hairs 
being absent on the scapes and legs, though conspicuous on 
the upper surface of the head, thorax and gaster! ‘Ihe 
pubescence is longer and denser and the whole body therefore 
slightly less shining. The thorax seen from above and ex- 
cluding the epinotum is circular and broader than the head, 
which is small, subrectangular, fully as broad as long and a 
little broader behind than in front. The scapes extend about 
half their length beyond the posterior corners of the head. 
Male. Length 1.5—1.75 mm. 
