270 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH Ser. 
Mesonotum, paraptera and scutellum smooth and shining, 
with coarse, sparse, piligerous punctures. Gaster shining, 
finely shagreened and very sparsely and finely punctuate. 
Pilosity much as in the soldier. 
Brownish yellow: pleurze, epinotum, nodes, posterior por- 
tion of each gastric segment, scutellum, a large spot on the 
middle of the mesonotum and the mandibular teeth, brown. 
Wings yellowish hyaline, with pale yellow veins and scarcely 
darker stigma. 
Male. Length 4—4.5 mm. 
Head through the eyes slightly broader than long, flattened 
above, produced behind in the ocellar region, with very short 
cheeks and large eyes. Mandibles minute, bidentate. Clypeus 
carinate, convex behind. Antennal scapes as long as the 
two basal funicular joints together. Thorax broad and short, 
flattened above; epinotum sloping, rounded, unarmed, with- 
out distinct base and declivity. Petiole and postpetiole like 
those of the soldier, the node of the former being lower, more 
rounded and entire. 
Mandibles and clypeus shining. Head above more opaque, 
especially on the sides, rugulose. Thorax, postpetiole and 
gaster shining and sparsely punctate; pleuree and epinotum 
subopaque, the latter longitudinally rugulose. 
Pilosity as in the female, but shorter and less abundant. 
Mandibles, clypeus, antenne and legs pale yellow; re- 
mainder of body brown, the head darker behind, the sutures 
of the thorax broadly pale yellow. Wings colored as in the 
female. 
Described from several specimens of each of the phases 
taken on Indefatigable Island by Dr. F. X. Williams. 
Cotypes, 12 specimens, No. 444, Museum California Acad- 
emy of Sciences. 
The soldier of this species resembles that of Ph. arhuaca 
Forel of Colombia in size and coloration, but is very distinct 
in the longer antennz, notched clypeus,: different shape of 
the mesonotum and in the sculpture of the dorsal surface of 
the head. It is even more closely related to Ph. alfaroi 
Emery of Costa Rica, but the soldier of this species is 
larger (4.5 mm.) and differs considerably from williamsi in 
the structure of the thorax, petiole, epinotal spines, etc. 
