S. B. Buckley on North American Formicidse. 343 



Beneath stones, in the vicinity of Washington, I). C. Winged 

 females caught in July. 



53. Myrmica (Diplorhoptrum) scabrata, n. sp. 



Worker. Length 0.29 inch. — Legs, antennae, pedicle, scale, mouth, 

 and under surface of the two last segments of the abdomen yellowish- 

 red, the rest black ; head ovate, rounded above, at sides and occiput; 

 eyes none; antennas short, much enlarged towards their apical joints; 

 mandibles widened anteriorly, toothed on their inner margins, small ; 

 prothorax about ', narrower than the head, rounded at sides and some- 

 what flattened at the top, widest in front ; mesothorax not depressed, 

 narrower than the prothorax ; metathorax narrowed back, with two 

 spines on its posterior upper surface, truncate; scales small, subnodose, 

 back one largest; abdomen large, oblong-ovate ; upper surface of the 

 head and thorax rugose and striated ; abdomen smooth ; legs long, 

 slender ; head, thorax and abdomen thickly sprinkled with short 

 hairs. 



Hub. — Connecticut, (Norton). 



54. Myrmica t'Atta) sabeana, n. sp. 



Workt r. Length 0.20 inch. — Reddish-brown or brownish black, 

 the upper surface of the head, thorax and abdomen piceous or black- 

 ish brown ; head subqnadrate, and emarginate at the occiput, channeled 

 slightly below; mandibles small, curved inwards, with two or three 

 small, sharp teeth near the apex, inner margins of the mandibles pice- 

 ous ; antennae clavate, inserted in front; joint very short, excepting 

 the apical, which is long ; eyes small, circular, black, lateral and a 

 little in front of the middle part of the head; prothorax narrower 

 than the head, and not compressed ; mesothorax somewhat depressed ; 

 metathorax small, rounded and smooth, pedicle long; scales nodose 

 and of nearly equal size; abdomen ovate, legs long and slender ; whole 

 ant sparingly sprinkled with gray hairs. Workers variable in size, 

 but not in shape; the length of the largest is given. 



In the ground, about the roots of tufts of grass, throwing its 

 excavated dirt above without order. Near the ford of the San Saba 

 river, in Mason County, Western Texas. 



55. Myrmica (Atta) sublanuginosa n. sp. 



Worker. Length 0.1G inch. — Color reddish-brown ; head subquad- 

 rate, rounded above, occiput emarginate; eyes circular, black, small, 

 lateral, and about midway of the head; antennae inserted in front, 12- 

 jointed, joints short and enlarged anteriorly; mandibles small, triangu- 

 lar, curved inwards, toothed and acute ; prothorax about half the width 



