TERMITES. 



21i) 



Calotermes (Glyptotermes) ceylonicxjs, Holmgr. 



Galotermes ceylonicus, Holmgren (Escherich, " Termitenleben auf 

 Ceylon "). 



Imago : — Yellowish brown to brown. Below, straw-yellow. Wings 

 hyaline with brown veins. Pronotum with a T-shaped yellow mark. 



Hair very scanty. 



Head quadrate -oval, longer than broad, very thick, sloping 

 somewhat towards the forehead. Sagittal suture very distinct. 

 Compound eyes small, somewhat protuberant. Ocelli of medium 

 size, almost touching the eyes, placed somewhat awry. Basal 

 portion of clypeus very short ; upper lip small, sharply bent. 

 Antennae 13-jointed, third about as long as second and a trifle longer 

 than the fourth. Pronotum rather smaller than the head, with 

 acutely rounded angles in front (" Vorderecken beinahe spitzwinkehg 

 abgerundet "). Metanotum somewhat rounded behind. Wing 

 membrane verrucose (" hockerig "). Subcosta of the fore wing 

 rudimentary. Radius short. Cubitus very feebly defined, with 

 from ten to twelve branches : — 



Smaller Form. Larger Fonn. 



Length, with wings . . 8*5 mm. . . — 



Length, without wings .. 4*7 mm. .. 6 mm. 



Length of fore wing .. 7*3 mm. .. — 



Length of head .. 1'33 mm. .. 1*48 mm. 



Width of head . . 1 • 15 mm. . . 1 • 26 mm. . 



Width of pronotum .. 0*96 mm. .. l"18mm. 



Length of pronotum . . 0*52 mm. . , 0*7 mm. 



Soldier : — Head yellowish red, brown towards the front ; man- 

 dible brown at base ; body straw-yellow. Hair very scanty. 



Head approximately cyHndrical, much longer than broad. 

 Forehead sharply receding, medially impressed, bilobed, rounded 

 at the sides. Basal portion of clypeus short. Upper lip reaching 

 beyond the middle of the closed mandibles, longer than broad. 

 Mandible very short and broad, strongly toothed. Antennae 

 12-jointed, short ; third joint very short. 



Pronotum smaller than the head, half-moon shaped ; anterior 

 margin concave, posterior margin slightly excavated in the middle. 

 Abdomen somewhat extended. 



Length of body, 6 • 5 to 7 mm. 

 Head, with mandibles, 3*22 mm. 

 Head, without mandibles, 2*55 mm. 

 Width of head, 1 "52 mm. 

 Width of pronotum, 1 '39 mm. 

 Length of pronotum, 0'63 mm. 

 The collection contains many larvae and nymphs. 

 Locality, Peradeniya. 



