284 SPOLIA ZEYLANICA. 



diameter. Fontanel le imperceptible, ])ut actually present. Basal 

 portion of the clypeus large, almost triangular behind, straight in 

 front, somewhat distended. Antennae 14-jointed, third very small. 

 Pronotum small, straight in front, anterior corners angularly 

 rounded, lateral margin strongly convergent ; posterior margin 

 relatively short, obscurely excavated in the middle. Mesonotum 

 distinct. Metanotum very shghtly excised. Front wing-pads 

 distinctly longer than the hinder ones, but not reaching the base of 

 same. The mediana of the fore Aving arises free from the pad, and 

 runs nearer to the cubitus than to the radius-sector. Mediana 

 simple or furcate, or with two or three branches. Cubitus with 

 eight or nine branches, of which most are furcate. Six or seven 

 stout inner nervures. The mediana of hind wing starts from the 

 radius-sector. 



Length, with wings, 7*5 mm. j Width of head, 0*84 mm. 



Length , without wings , 4 mm . ] Lengthof pronotum, 0' 43 mm. 



Length of head, 0'91 mm. | Width of pronotum, 0'fi5 mm. 

 Locality, Ambalangoda. 



MiCROCEROTERMBS GREENI, n. sp. 



Soldier : — Head yellowish brown ; body straw-yellow, whitish ; 

 head very sparsely hairy. 



Head elongated, parallel-sided. Forehead somewhat truncated, 

 " rinderformig "-shaped, impressed. Basal portion of clypeus 

 distinctly convex behind, with straight anterior border. Upper lip 

 roundly pentagonal. Fontanelle small. Transverse sutures distinct. 

 Mandible decidedly concave externally at the base. Mandibles 

 relatively short, with very distinctly serrate teeth, the tips falcate. 

 Antennaj 13-jointed ; second as long as third and fourth together ; third 

 veiy short. Pronotum small, saddle -shaped, not excised in front. 



Length of body, 4*20 to 4*25 mm. 



Length of head, with mandibles, 1 '85 mm. 



Length of head, without mandibles, 1-37 mm. 



Width of head, 0*81 mm. 



Width of pronotum, -52 mm. 

 Worker (two forms): — Head yellow ; body yellowish white. 

 Hair scanty. Head broadly oval. Fontanelle not visible. Basal 

 portion of clypeus large, arched in front, fleshy, rather longer 

 than half its breadth, distinct^ convex behind, straight in front. 

 Antennae 13-jointed; second as long as third and fourth together ; 

 third very short. Pronotum saddle-shaped, not excised in front. 



Small Form. Large Form. 



Length of body .. 2-5 mm. .. 3 mm. 



Length of head .. 0-78 mm. .. 0-81 mm. 



Width of head .. 0-67 mm. .. 0-7 mm. 



Width of pronotum 0-44 mm. ., 0-48 mm. 



Locahty, Ambalangoda, 



