S. B. Buckley on North American Formiculse. 1G7 



epistoma and posterior part of the abdomen somewhat hairy, the rest 

 smooth and shilling; legs long and slender; otherwise like the fe- 

 male. 



Winged females caught about the middle of April. Dwell beneath 

 stones and logs, having cells a few inches beneath the surface of the 

 ground. 



Hob. — Central Texas, where it is not very common, being rarely 

 seen in the open air. 



26. Formica San Sabeana, n. sp. 



Female. Length 0.62 inch. — Wings extend but a little beyond the 

 abdomen, and having one marginal and two submarginal cells, discoi- 

 dal cells absent. Color: head and thorax black; abdomen yellowish- 

 brown, the upper surface of the three last segments brownish-black; 

 legs chestnut or yellowish-red; head subtriangnlar, depressed in front, 

 vertex slightly convex ; occiput emarginate, with the posterior angles 

 rounded; eyes small, circular, and placed a little behind the middle 

 of head on the upper margins of its sides; mandibles flattened, curved 

 inwards, widened anteriorly, each with five teeth on their apical margins; 

 antennae filiform, and not enlarged towards the apical joints; prothorax 

 large and of nearly ecpual width to the head, rounded above and raised 

 higher than the mesothorax, a small depression between the meso- and 

 metathorax; pedicle short; scale large, vertical and wedge-shaped; ab- 

 domen oblong-ovate; legs slender and short; whole ant smooth and 

 shining, sprinkled with a very few short white hairs. 



Male. Length 0.32 inch. — Abdomen very slender and oblong-ovate ; 

 color black, segments of abdomen hyaline; legs dark-brown or brown- 

 ish-black ; otherwise like the female. Caught in the winged state 

 about the 1st of October. 



Worker. Length 0.46 inch. Head black or brownish-black, trian- 

 gular, about twice the width of the thorax ; thorax yellowish-brown or 

 piceous on its upper surface, its divisions strongly marked ; otherwise 

 like the female. 



Found in an old decaying stump, in which it had many cells with 

 intervening passages. Is very quick in its movements. Habits little 

 known. 



Hah. — Burnet and San Saba Counties, Texas. Bare. 



27. Formica foetida. n. sp. 



Fanale. Leugth 0.19 inch. — Smooth throughout; honey-yellow, 

 with brownish bands on the segments of the abdomen ; head small, 

 subtriangular, curved above and a little rounded beneath, concave be- 



