1930 ] Ant-like Spiders of the Genus Myrmarachne 217 
the inner edge produced in a sharp tooth, the lower inner 
edge with about five teeth, outer edge of fang-groove not 
marked by distinct teeth, fang but little curved. Palpi short, 
tibia shorter than tarsus. Legs slender, but rather short, 
femur 1 thick at base, tibia 1 with five pairs of spines below, 
patella with one spine. Sternum moderately narrow, a lit- 
tle narrower at coxse 1 than at coxae 2. Abdomen very 
long and slender, but not constricted above nor or on sides, 
and with one long shield above. 
Body. — Length 4.5 mm. 
From Los Banos, Luzon, Phil. Islds. (Baker). The fe- 
male with the males is similar in color and structure, except 
in having short mandibles. 
Myrmarachne nigella Simon 
Described by Peckham as S. niger, changed to nigella by 
Simon because Salticus niger was preoccupied. Besides the 
Peckham types we have it from Manila (Feb. 1917) and 
Dupax, Nueva Vizcaya, Luzon. 
Fig-. 
1 . 
Fig. 
2. 
Fig. 
3. 
Fig. 
4. 
Fig. 
5. 
Fig. 
6. 
Fig. 
7. 
Fig. 
8. 
Fig. 
9. 
Fig. 
10. 
Fig. 
11. 
Fig. 
12. 
Fig. 
13. 
Fig. 
14. 
Fig. 
15. 
Explanation of Plate 11. 
Myrmarachne tagalica, jaw above. 
Myrmarachne piercei, side. 
Myrmarachne iridescens, side. 
Myrmarachne bidentada, jaw above. 
Myrmarachne seriatis, side. 
Myrmarachne chapmani, jaw above. 
Myrmarachne assimilis, side. 
Myrmojroxhne bakeri , jaw above. 
Myrmarachne mcgregori , side. 
Myrmarachne tagalica, side. 
Myrmarachne chapmani, side. 
Myrmarachne opaca, jaw above. 
Myrmoxachne assimilis, jaw above. 
Myrmarachne mcgregori, jaw above and teeth 
near apex below. 
Myrmarachne opaca, side. 
