1949] 
Bryant — Theridiidae 
67 
Genotype : Mufila texana spec. nov. 
The genus Mufila probably belongs with the Asageni- 
nce, as a remnant of a stridnlating organ remains on the 
base of the abdomen. It differs from the other genera 
in that sub-family by the very broad cepbalo thorax, the 
high clypeus and the closely grouped eyes that vary lit- 
tle in size. It differs from the genns Umfila Keys, by 
the cephalothorax which is as wide as long, the very high 
clypeus, the pointed sternum, and the lack of a dorsal 
scutum on the abdomen. 
Mufila texana spec. nov. 
Figure 1 
Male. Length, 2.5 mm., ceph. 1.2 mm. long, 1.2 mm. 
wide, abd. 1.4 mm. long, 0.7 mm. wide. 
Cephalothorax golden brown, shining, with a few short 
hairs below the a.m.e., almost circular, anterior margin 
strongly convex, and wider than the posterior margin, 
sides rounded, almost flat, cephalic portion highest, 
thoracic groove long and deep, in a depressed area ; eyes 
closely grouped, area slightly elevated, each eye heavily 
ringed with black, and not varying much in size, anterior 
row slightly recurved, a.m.e. largest of the eight, sepa- 
rated by about a diameter and from the a.l.e. by a little 
less, posterior row the same length as the anterior row, 
almost straight, eyes equidistant and suhequal, p.m.e. 
separated by little more than a diameter, lateral eyes 
touching; quadrangle wider in front and not as high as 
wide ; clypeus Below a.m.e. almost equals three times the 
ocular area, with a stripe of short dark hairs directed up- 
ward, from the margin to the a.m.e. ; mandibles dark, 
small and vertical, weak, fang short ; labium very narrow, 
more than twice as wide as long, suture between the 
labium and sternum very indistinct; maxillce yellow, 
shaded with gray, more than twice as long as the labium 
and strongly inclined; sternum bright yellow, darker 
about the margins, slightly convex, three-quarters as 
wide as long, anterior margin rounded, posterior margin 
pointed, first pair of coxae widely separated, fourth pair 
