APH.ENOGASTEII. 



271 



B. Head posteriorly uot produced into a neck. 

 a. Pronotum seen from the front distinctly late- 

 rally bituberculate .' A. rothietji p. 273, 



h. Pronotum not laterally bituberculate. 



a'. Head and thorax coarsely, very closely 



striate-reticulate, punctured and rugose . . A. schurri, p. 274. 

 b'. Head and thorax very slightly and sparsely 

 sculptured, shining. 

 «^. Pro- and mesonotum forming one con- 

 tinuous convexity, mesonotum anteriorly 

 not raised into a transverse ridge or crest. A. sar/ei, p. 275. 

 b'-. Pro- and mesonotum not forming one 

 continuous convexity, pro - mesonotal 

 suture distinct, anterior margin of meso- 

 notum behind the suture raised into a 

 ridge or crest. 

 a^. Autennre very slender: joints 2-7 of 



flagellum three times as long as broad. A. cristata, p. 276. 

 b^. Antennae a little more robust; joints 

 2-7 of flagellum only a little longer 

 than broad A . smi/thiesi, -p. 276. 



310. Aphsenogaster beccarii, Emenj (Ischnomyrmex), Ann. Mus. Civ. 

 Gen. XXV (1887), p. 456, § c?, pi. i, tig. 12, J. 



^ . Light castaneous brown, smooth and shining, the thorax 

 posteriorly and the abdomen shghtly darker, the head in certain 

 lights indistinctly finely striate on the front between the eyes ; 

 mesonotum posteriorly and metanotum coarsely striate, sculptured 



Fiif. 82. — Apkceiiogaster beccarii, ^. a. Profile of thorax ; h. Antenna. 



and rugose, the stria; transverse on the metanotum above, oblique 

 on the sides ; the \A'hole head, thorax and abdomen with scattered 

 minute piligerous tubercles. Head, including the maudibles, 

 viewed from above elongate, oval, broadest at the eyes, which are 

 large, somewhat elongate and oval ; mandibles triangular, broad 

 at the masticatory margin, which is furnished with three con- 

 spicuous teeth towards the apex, finely striate at base ; clypeus 

 ample, rounded anteriorly, convex in the middle, antenuai hollows 

 very large ; antennal carinse, the distinct carinoe between the eyes 

 and the antennal hollows convergent posteriorly ; antennae very 

 long and filiform, the scape extending well beyond the posterior 



