278 CALIFORNIA ACADEMY OF SCIENCES [Proc. 47H Ser. 
Somewhat paler and more uniformly reddish brown than 
the worker and female. Wings gray, with brown veins and 
stigma. Pilosity much as in the female, but the pubescence 
sparser and shorter than in the worker so that the body 
appears shining. Antennal scapes reaching about half their 
length beyond the posterior corners of the head. Genitalia 
much as in the typical fulva. 
Described from several workers and males taken by Dr. 
Williams on James Island (2000 ft., under stones) and two 
females from Chatham Island (low altitude, under stones). 
Cotypes, 8 specimens, No. 449, Museum California Academy 
of Sciences. 
At first sight I took these ants to represent a form of P. 
vividula or a small form of P. bourbonica, like the var. 
hawatiensis Forel, but the genital appendages proved on dis- 
section to conform to the fulva type. The new subspecies is, 
however, smaller than any of the recorded forms (subspecies 
pubens Forel, subspecies biolleyi Forel, var. Jongiscapa Forel). 
The mesonotum in profile is much like that of biolleyz, but the 
epinotum is distinctly less convex. 
In the colony taken on James Island, Dr. Williams found 
six specimens of a myrmecophilous Bethylid, which proved to 
be a new species of Scleroderma. This is described by Prof. 
C. T. Brues in an accompanying paper. — 
18. Camponotus (Myrmobrachys) senex (F. Smith). 
Formica senex F. Smith, Catalog. Hymen. Brit. Mus. 6, 
1858, p. 47 8. 
Camponotus senex Mayr, Verh. zool. bot. Ges. Wien. 12, 
1862, p. 676; ibid., 27, 1877, p. 867, & 2 6; F.. Smith, Proc. 
Zool, Soci twoudoni S773 \p: So: 
Camponotus (Myrmobrachys) senex Forel, Rev. Suisse 
Zool. 22, 1914, p. 271. 
Frederick Smith cites this well known neotropical species 
as having been taken on Charles Island by W. E. Cookson, 
commander of the “Peterel’” on her voyage to the Galapagos 
in 1875. As no specimens of it are among the collections of 
the California Academy or the “Albatross” Expeditions, and 
