348 S. B. Buckley on North American Formicidse. 



head, round-ovate; legs long, slender; whole ant thickly sprinkled 

 with hairs. 



Worker minor. Length 0.12 inch. — Occiput 4-spined, ant rounded 

 posteriorly, upper spines minute, pedicle long, scales small, sub-nodose, 

 posterior one largest; abdomen smaller than the head, ovate; other- 

 wise like the worker. 



Central Texas. Common and well known as the Cutting Ant. 



For the same reason the following ant, noticed in the same volume 

 as the preceding at page 455, is here redescribed : 



63. Myrmica (Monomarium) molifaciens. 



Female. Length 0.48 inch. — Color reddish-brown ; head sub-trian- 

 gular, sides rounded and also rounded above and behind; ocelli 3, a 

 little back of the vertex; antenna? rather short and filiform, not elavate; 

 mandibles black or brownish-black, rounded in front, large, curved in- 

 wards and downwards, 7-toothed, apical tooth long and acute ; head 

 nearly sa wide as long, sinuate beneath ; eyes black, prominent, sub-ellip- 

 tical, lateral, and about midway of head; prothorax about equal in width 

 to the head, rounded above and in front, where is a small sub-circular pro- 

 tuberance, divided into two nearly equal parts by a slight longitudinal 

 channel ; mesothorax slightly raised above the prothorax; metathorax 

 depressed and has two short spines, posterior scale largest, and both 

 sub-nodose ; pedicle long ; abdomen ovate, sub-acute ; legs slender ; 

 wings extend but little beyond the abdomen ; head, thorax and poste- 

 rior part of abdomen thickly sprinkled with hairs. 



Worker. Length 0.28 inch. — Head triangular, slightly emarginate 

 behind and wider than the prothorax; prothorax rounded and smooth 

 above and in front, widest in the middle, the whole thorax compressed 

 and narrowed back, its divisions obscure ; metathorax has two promi- 

 nent spines slightly inclined backwards, less hairy than the female; 

 otherwise like the female. 



Central Texas. Common ; it is called the mound-building or sting- 

 ing-ant; its excavated dirt being mound-like. 



64. (Ecodoma pilosa, n. sp. 



Worker. Length 0.15 inch. — lleddish-brown ; head sub-quadrate, 

 rounded above, posterior angles of the occiput also rounded, with the 

 intervening space slightly curved inwards as seen from above; eyes 

 small, lateral, black, and about midway of the head ; antenna? in front 

 and enlarged towards the apical joint; under surface of the head con- 

 cave before and behind and plane in the middle ; mandibles short, flat- 

 tened, and of nearly uniform width, being slightly narrowed in the 



