172 S. B. Buckley on North American Formicidse. 



35. Ponera elongata, n. sp. 



Worker. — Length 0.27 inch. Reddish-brown, some darker than 

 others; head sub-triangular, rounded above and slightly so below, pos- 

 terior part mostly straight when seen from above, with the corners 

 slightly rounded; eyes black, and placed on the upper surface of the 

 sides, a little in front of the middle of the head; mandibles sub-trian- 

 gular, curved inwards and downwards, sharp-pointed; antennae insert- 

 ed in front near the epistoma, long, filiform aud somewhat enlarged 

 towards the apical joint; prothorax but little narrower than the head, 

 rounded above and forwards; mesothorax small and strangulated; me- 

 tathorax longer than both pro- and mesothorax, compressed, enlarged 

 and widest in the middle, terminating abruptly posteriorly ; scale large, 

 incrassate, subquadrate and oval above, occupying nearly the entire 

 length of the pedicle, subtruncate at each end; a deep strangulation 

 between the first and second segments of the abdomen; abdomen ob- 

 long-ovate, acute; legs long and slender; the insect is of slender form, 

 and not active. 



Fouud beneath limestone rocks, near Austin, Texas. I have never 

 seen it at work in the open air. It is not common. 



36. Ponera (Ectatoma) Lincecumii, n. sp. 



Worker. — Length 0.15 inch. Upper surface of head and abdomen 

 sub-piceous, the rest reddish-yellow or pale yellow ; head oblong-ovate, 

 rounded above,. at sides and behind; eyes very large, prominent, later- 

 al, elliptical, black; antenna) short, clavate and inserted on the sides of 

 the clypeus; mandibles small, curved in aud acute; inner surface not 

 sinuate; prothorax one-third narrower than the head, rounded above, 

 compressed at the sides, widest in front; mesothorax small, compress- 

 ed aud not depressed; metathorax a little wider than the mesothorax, 

 sloping gradually to the pedicle, which is long; scale large, sub-nodose; 

 abdomen oblong, sub-acute, a deep strangulation between the first and 

 second segments; legs long, slender; whole ant smooth, shining, and 

 of slender form. 



Hub. — On trees in Central Texas. Is rather solitary in its habits, 

 going here aud there from branch to branch, seemingly without any 

 definite object. 



[to be continued.] 



