TERMITES. 277 



ON SOME TERMITES COLLECTED BY MR. GREEN 

 IN CEYLON.* 



By Dr. Nils Holmgren, Stockholm. 



T HAVE, on several occasions, received termites for determination 

 -L from Mr. E. E. Green, of Peradeniya. 



These very valuable collections contained several new species in 

 addition to others that were already well known, but of which our 

 knowledge has been amplified by the discovery of hitherto unknown 

 castes. 



Hereunder I will deal with the following species and castes that 

 are new to Ceylon or to Science : — 



Calotermes {Neotermes) militaris, Desn. Imago. 



Calotermes {Glyptotermes) dilatatus, Bung. Imago. 



Calotermes {Glyptotermes) ceylonicus, Holmgr. Imago and soldier. 



Termes estherse, Desn. New to Ceylon. 



Odontotermes horni, Wasm. Imago. 



Odontotermes ceylonicus, Wasm. Imago. 



Odontotermes obscuriceps, Wasm. Imago. 



Eutermes lacustris, Bugn. Soldier and worker. 



Eutermes longicornis, n. sp. Soldier and worker. 



Microcerotermes hugnioni, Holmgr. Imago. 



Microcerotermes greeni, n. sp. Soldier and worker. 



Calotermes (Neotermes) militaris, Desneux. 



Imago : — Reddish brown, with lighter coloured anteimse, pleurae, 

 coxae, femora, and abdominal sternites. Tibiae and tarsi reddish 

 brown. Wings (rust coloured) yellow brown, smooth, sparsely 

 covered with hair. 



Head broadly oval, thick when looked at from the side, moder- 

 ately arched, with somewhat impressed forehead. Compound eyes 

 rather small, ocelli small, almost touching the eyes. Basal portion 

 of clypeus very short, of the same colour as the forehead, quite flat. 

 Apical portion of clypeus trapezoidal, white. Upper lip somewhat 

 broader than long. Mandible armed as in Hodotermes. Antennae 

 with eighteen or nineteen jomts. In the case of those with 

 eighteen, the second, third, and fourth are of equal length. When 

 there are nineteen joints, second and third are equal and the fourth 

 shorter. 



Pronotum much broader than the head ; anterior border strongly 

 concave, distinctly shorter than the hinder border. Posterior 

 angles more strongly rounded than the anterior angles. Mesonotum 



* Translated from the German. 



