1983] 
Willey & Brown — Genus Myopias 
281 
sides of trunk, especially mesopleura and metapleura, and sides of 
node, obscurely striate-punctulate; coxae minutely striate, becom- 
ing smooth anteroventrad. Posterior disc of gastric tergum I, and 
most of 11, densely covered with small, round punctures with 
smooth, shining, but very narrow interspaces, becoming wider 
behind; undersides of the same two gastric segments with scattered 
coarse punctures, the interspaces in part minutely roughened (1) or 
shining. In addition to the other surfaces listed above as smooth and 
shining may be added the gastric apex, mandibles and femora, all 
with scattered punctures. Antennae, tibiae, tarsi mostly finely punc- 
tulate, but more or less shining. 
Pilosity reduced to a mostly pubescence-like vestiture, abundant 
but not very conspicuous, of appressed to subdecumbent, fine hairs; 
only the clypeal and paired humeral setae as long as 0.10 mm, but 
the specimens are badly rubbed, and probably had moderately, 
abundant, but still fine and short, erect and suberect pilosity, some 
of which can still be seen at times on scapes, legs, and dorsum of 
trunk, as well as gastric apex. 
Color dull, light brownish yellow. 
Queen and male unknown. 
Holotype (MCZ) and two paratypes workers (MCZ, BMNH) 
from Taiwan; Rarasan (probably the same as the mountain now 
called La La Shan, 24°44'N, 121°26'E, to the southwest of T’ai Pei), 
31 July 1933, leg. R. Takahashi. I have no information concerning 
the habitat, nest site, or prey. This is obviously a cryptic-foraging 
form, probably living in the soil or in rotten wood. A related un- 
described species has been found in Borneo. 
The type series was originally three workers mounted on points 
on a single pin; these were heavily damaged in a laboratory accident, 
but the species is so interesting that we decided to describe it from 
the collectively adequate remains. The name nops is from a Greek 
word meaning blind. 
Myopias delta new species 
(Figs. 8, 21) 
Diagnosis, worker and queen: A modest-sized species, completely 
distinct from all congeners in possessing downcurved triangular 
mandibles with distinct basal and masticatory borders meeting at a 
dentiform basal angle. Head oblong, with convex sides and straight 
