Vor. II, Pr. II] WHEELER—GALAPAGOS ISLANDS ANTS 267 
mandibles, with longer preapical tooth, the smooth, shining 
portion of the occiput extending somewhat further forward 
and that of the sides of the head further dorsally. The 
longitudinal striz of the pronotum and transverse striz of 
the epinotum are somewhat coarser and the anterior surface 
of the petiole is rather coarsely, transversely striate. The 
pilosity, pubescence and color are much as in the typical 
hematoda, but the body has a somewhat bronzy lustre and 
the antennz and legs are darker. 
Female. Length 10—11 mm. 
Very similar to the worker and differing from the female 
of the typical hematoda in the same characters. The wings 
measure only 7 mm. or somewhat less, however, whereas 
those of the typical h@matoda measure at least 8 mm. 
Male. Length 6 mm. | 
Closely resembling the male of the typical hematoda, except 
in color. The head, thorax, legs and antennze are whitish 
yellow, with the epinotum, petiole and dorsal surface .of the 
gaster dark brown, the venter brownish yellow. The 
mesonotum has a dark brown longitudinal spot on each side 
and a slightly paler median spot of the same color just 
behind its anterior border. Wings whitish, with pale brown 
stigma. 
This form, which is extremely close to the typical hema- 
toda, so widely distributed in the tropics of both hemispheres, 
was described by Emery from a single worker taken by Dr. 
G. Baur on Chatham Island. I have redescribed it from a 
number of workers and females and a single male taken by 
Dr. F. X. Williams on the same island and at Cormorant 
Bay, Charles Island. The specimens were nesting under 
stones from sea-level to an altitude of 1100 feet. 
Subfamily MYRMICINA. 
3. Pheidole williamsi, new species. 
Soldier. Length 2.3—2.6 mm. 
Head small, subrectangular, scarcely longer than broad 
and scarcely broader behind than in front, with rounded 
posterior and anterior corners, feebly excised posterior bor- 
