146 FORMICIDJE. 



a little above the middle of the head. Thorax widening posteriorly ; 

 the pronotuin short, rounded in front : pro-mesonotal suture 

 indicated but not distinct ; mesonotutn slightly convex ; thorax 

 slightly constricted at the meso-metanotai suture, which is distinct ; 



Fig. 59. Cremastogaster diffonnis, 



metatiotum very broad, without spines, but divided into two by a 

 deep, broad, medial sulcation; the posterior lateral angles of the 

 basal portion of the metanotum prominent, beneath them there is 

 an orifice leading to the inside of the lobes of the metathorax, 

 which are hollow and divided by a septum. Pedicel somewhat 

 narrow ; the 1st joint flat above, rectangular, longer than broad ; 

 2nd joint with rounded but very slightly raised node above, 

 entire, with no groove or division : abdomen broad and cordate. 



Length, $ 5-6 mm. 



Hab. Southern Tenasserim (Binyham), extending to Borneo, 

 Sumatra, and Java. 



This species, like C. inflata, Smith, carries a store of saccharine 

 matter in the hollows of the metathorax. 



172. Cremastogaster physothorax, Emery. 



Cremastogaster difformis, Smith, race phvsothorax, Emery, Ann. 

 Mus. Civ. Gen. xxvii (1889), p. 506. 



$ . Very closely resembles C. difformis, Smith, in colour and 

 sculpture, and is in fact the northern form of that species ; the head 

 is squarer, as broad in front as it is posteriorly and not longer than 

 broad, the pronotum is proportionately narrower and a little more 

 convex, and the metanotum markedly broader, more swollen, with 

 the medial furrow less deep. For the rest like C. difformis. 



Length, $ 3-5-5-5 mm. 



Hob. Tenasserim : Haungdraw Valley (Fea), Ataran Valley to 

 Karennee (Bingham) ; Lower Burma, Pegu Yoma (Allan). 



In addition to the above, the following have been recorded 

 from within our limits, but the descriptions are either inadequate 

 for the determination of the species, or have been taken from cf 

 or $ : 



Myrinica (Crenaastogaster) kirbii, Sykes, Trans. Ent. Soc. i (1835), 



p. 99, pi. l b c?,l c $. 

 Myrmica (Cremastogaster) diffusa, Jerd. Madr. Jour. L. S. xvii 



(1851), p. 113. 



