258 W. M. WHEELER. 



Leptogenys (Lobopeltd) elongata (Buckley) Wheeler, Biol. Bull., Vol. 

 II., No. i, Oct., 1900, p. 2, 7, Fig. 4. 5! ?c?; Trans. Tex. Acad. Sci., 

 Vol. IV., Pt. II., No. 2, 1902, p. 9 



WORKER. --Length 5-6.5 mm. 



Head slender, excluding the mandibles, longer than broad, somewhat 

 broader in front than behind. Eyes moderate, flattened, situated a little 

 in front of the middle of the sides of the head. Mandibles slender, nearly 

 two thirds as long as the head, gradually increasing in breadth as far as 

 their apical third, forming a sharp, toothless blade and thence narrowing 

 more suddenly to the acute, curved tip. Clypeus prolonged forward in the 

 middle to a rather acute point and with a prominent median keel ; lateral 

 emarginations distinct but not very deep. Frontal furrow extending back 

 a little beyond a line connecting the posterior orbits of the two eyes. 

 Antennae slender ; scapes extending about one third their length beyond 

 the posterior corner of the head. First and third funicular joints subequal, 

 decidedly shorter than the second joint ; joints 4-1 1 subequal, shorter than 

 joints I and 3. Thorax elongate, its dorsal surface horizontal, meso- and 

 epinotal regions laterally compressed ; depression behind the small meso- 

 notum short but rather deep. Basal surface of epinotum twice as long as 

 the sloping declivity, which is somewhat flattened and transversely margi- 

 nate below and behind. Petiole in profile as high as the thorax, somewhat 

 higher behind than in front and nearly as long as high ; anterior, dorsal 

 and posterior surfaces flattened ; the dorsal and posterior meeting at a 

 somewhat sharper angle than the anterior and dorsal surfaces. There is a 

 distinct tooth at the anterior, ventral border of the petiole. Seen from 

 above this segment is pyriform, twice as broad behind as in front, with 

 flattened sides and rounded dorsal surface. Gaster slender, somewhat 

 deeper than the petiole, distinctly constricted between the first and second 

 segments. Sting prominent. Legs long and slender ; claws with long 

 pectination. 



Mandibles smooth and shining, the former with a few scattered punc- 

 tures and faint traces of striation ; the latter thin and submembranaceous 

 along its anterior border and obliquely rugose on the sides. Head, thorax 

 and petiole subopaque, rather densely and uniformly covered with shallow 

 punctures. Region between the eyes and clypeus longitudinally rugose. 

 Gaster shining, very sparsely and finely punctate. 



Body and appendages clothed with delicate, grayish yellow pubescence ; 

 the head, thorax and abdomen also with sparse, grayish yellow hairs, 

 which are long and projecting on the clypeus and terminal segments of the 



gaster. 



Deep red ; edges of mandibles and thoracic sutures somewhat black- 

 ened. Antennae and legs a little paler than the trunk ; tip of gaster, sting, 

 anterior border of the clypeus and the spines of the tibiae, yellow. 



FEMALE. --Length 6.5-8 mm. 



Apterous and decidedly ergatoid in form, indistinguishable from the 



