SPHINCTOMYRMEX. 25 



einarginate posteriorly ; mandibles triangular, with a distinct 

 dentate masticatory margin ; clypeus very narrow, transverse, 

 produced backwards in an angle between the antennal carinae, its 

 anterior margin straight, transverse ; antennal carinaa short, close 

 together, convergent posteriorly, not covering the base of the 

 antennae; antennae 11- or 12-jointed (11-jointed in the two 

 Indian species), the flagellum clavate; eyes and ocelli entirely 

 absent. Thorax very short, elongately rectangular, as broad 

 posteriorly as in front, flat above, laterally compressed, truncate 

 and transverse posteriorly ; pro-meso- and meso-metanotal sutures 

 entirely obliterated above ; legs short and stout, femora and tibiae 

 more or less cylindrical, claws minute, simple. Pedicel one- 

 jointed, node quadrangular ; abdomen very long, nearly twice the 

 length of the thorax, cylindrical, constricted at the apical margins 

 of all except the last segment. 



Key to the Species. 



a. The apical truncate face of the metanotuin 



carinate above and on the sides S.furcattts, p. 25. 



b. The apical truncate face of the metanotum 



carinate only on the sides S. taylori, p. 25. 



28. Sphinctomyrmex furcatus, Emery (Eusphinctus),^wM. Mm. Civ. 



Gen. xxxiv (1894), p. 457, ; Forel, Jour. Bomb. N. H. Soc. 

 xiii (1900), p. 328, . 



. Dark reddish or ferruginous brown, the legs slightly paler, 

 pilosity reddish, fairly abundant and stiff ; head, thorax and 

 abdomen with large, coarse, irregularly scattered punctures. 

 Head rectangular, longer than broad, as broad posteriorly as in 

 front ; mandibles subtriangular, robust, the masticatory margin 

 obscurely dentate, the base above striate ; clypeus transverse, very 

 narrow, raised in the middle and extending back between the 

 antennal carinae, which are very short, prominent and close 

 together, curving anteriorly outwards along the posterior margin 

 of the clypeus ; antennae very thick and short ; occiput slightly 

 and widely einarginate. Thorax elongate, rectangular, compressed, 

 the sides parallel, the apex obliquely truncate and carinate around 

 the margin of its posterior face. Pedicel and abdomen with the 

 characters as given in the genus, the last segment flat above, 

 bifurcate at apex. 



Length, % 6-5-7 mm. 



Hab. Eecorded from Lower Burma (Fea). 



29. Sphinctomyrmex taylori, Forel, Jour. Bomb. N. H. Soc. xiii 



(1900), p. 328, $ . 



. Closely resembles S. furcatus, Emery, but is smaller, and the 

 pygidium is not so deeply bifurcate. Brownish yellow, covered 



