214 
Psyche 
[September 
Myrmarachne chapmani sp. nov. 
Figs. 6, 11. 
Cephalothorax and jaws yellow-brown, black in front 
and around third eyes, legs yellowish; abdomen pale on 
basal half, beyond shining black, except extreme tip pale, 
anterior metatarsi slightly dark. Cephalothorax not deeply 
cut behind eyes, but side grooves are deep, and above the 
eye-region appears trilobed behind; eyes of second row 
about as near third row as to A. S. E. Jaws about as long 
as cephalothorax, straight, not constricted on basal part, 
from above the sides are nearly parallel, but outer some- 
what convex, each edge with a carina; lower inner row of 
about seven large teeth, nearly evenly spaced, except near 
tip; outer edge of fang-groove not indicated and without 
teeth; fang long, scarcely sinuous, but with a very large 
tooth near basal third and the beginning of another near 
apical third. Palpi short, the tibia shorter than usual, no 
longer than broad. Legs short; femora, especially of leg 1, 
swollen at base, tibia 1 with four pairs of spines. Sternum 
much narrowed between coxse 1, but moderately broad at 
coxse 2. Abdomen elongate, constricted above, with two 
separate shields. 
Body. — Length 4mm. 
From Philippine Islands (J. W. Chapman), with ants. 
Myrmarachne piercei sp. nov. 
Fig. 2. 
Cephalothorax with head black, thoracic part yellowish, 
base of abdomen pale, beyond dark, jaws red-brown, legs 
yellowish brown, metatarsi 1 dark, leg 2 pale, with a dark 
stripe in front of femur; leg 3 mostly brownish; leg 4 
with coxse, trochanters, and most of patellae very pale, rest 
brown. Cephalothorax deeply cut back of the eyes, the 
thoracic part somewhat elevated behind cut ; eyes of second 
row almost as near third row as to A. S. E. Jaws long, 
straight, hardly as long as the cephalothorax, not con- 
stricted above on basal part, upper edge with carina, outer 
side slightly convex, lower inner edge with only two or 
three small teeth toward tip, outer edge of fang-groove 
marked by a carina with a few small teeth scattered along 
