AUSTRALIAN CERAPACHYINI. 203 



Queensland: Kuranda (Rowland Turner). 



Redescribed from a cotype received from Prof. Forel and numerous 

 specimens taken Oct. 3, 1914 at Kuranda from a single colony, which 

 was nesting in a small cavity in a red-rotten log in the dark "scrub." 



This form is readily distinguished by the shape of the petiole and 

 postpetiole and the pronounced constriction between the latter and 

 first gastric segment. 



Gemus Cerapachys F. Smith. 

 33. Cerapachys (Syscia) australis Forel. 



Syscia australis Forel, Ann. Soc. Ent. Belg. 44, 1900, p. 68, ^ ; 

 Froggatt, Agric. Ga?. N. S. W., 1905, p. 14. 



Cerapachys (Syscia) australis Emery, Gen. Insect. Fasc. 118, 1911, 

 p. 10, ^ ; Crawley, Ann. Mag. Nat. Hist. (8) 15, 1915, p. 133, g . 



]]'orkcr. Length 3-3.5 mm. 



Head about 3 longer than broad, subrectangular, as broad in front 

 as behind, with evenly convex sides, broadly excised posterior border 

 and short, rather pointed posterior corners. Eyes absent. Mandi- 

 bles subtriangular, deflected, with distinctly dentate apical and basal 

 borders. Clypeus extremely short. Frontal carinfe approximated, 

 erect, surrounding the antennal insertions in front, converging and 

 truncated behind where they fuse in a depression uniting the anten- 

 na! fovese. Carinae of cheeks indistinct. xVntennal scapes robust, 

 slender at their insertions, less than half as long as the head; first 

 funicular joint as long as broad, joints 2-7 broader than long, terminal 

 joint large, glandiform, as long as the four preceding joints together. 

 Thorax decidedly narrower than the head, a little more than twice as 

 long as broad, as broad behind as in front, slightly narrowed in the 

 mesonotal region, without transverse sutures; humeri and corners 

 of epinotum rounded; in profile the dorsal surface is straight, the 

 epinotal declivity abrupt, marginate on the sides and submarginate 

 above; the pronotum submarginate in front. Petiole narrower than 

 the epinotum, rounded cuboidal, scarcely broader than long and 

 scarcely broader behind than in front, with convex sides and a blunt, 

 compressed tooth on its anteroventral surface. Postpetiole rest ing 

 the petiole but broader, distinctly broader than long and a little 

 broader behind than in front, with rounded anterior corners, feebly 

 convex sides and a very protuberant anteroventral surface. First 

 gastric segment very large, about | longer than broad, much longer 



