278 • SPOLIA ZEYLANICA. 



and metanotum straight behind, hardly rounded. Basal pad* 

 C' Schuppen ") of the fore wings very large, with rather convex 

 costal margm and bowed hinder margin ; ribs prominent. Wing 

 membrane thickly covered with minute prominences. Subcosta 

 and radius of fore wing fairly well developed. Radius-sector with 

 from six to seven branches to the front edge of the wing ; the first 

 branch proceeding from the inner thkd of the wing. Mediana free 

 from the base of the wing, with from six to eight radius-sector 

 connections, often with a backwardly directed branch at the 

 extremity. Interspace between the mediana and the cubitus 

 reticulated. The five to seven inner branches of the cubitus well 

 defined ; the remainder (ten to twelve*) weaker. 



The mediana of the hind wing extends almost from the base of 

 the radius -sector. 



All the tibiae with three apical teeth ; the middle tibiae with one 

 or two additional lateral teeth. Onychium small. 



Length, with wings, 17 mm. 



Length, without wings, 10 to 12 mm. 



Length of head, 2*5 to 2*7 mm. 



Breadth of head, 2 mm. 



Width of pronotum, 3 mm. 

 Locality, Peradeniya. (Coll. Green, No. 2,452.) 



Calotermes (Glyptotermes) dilatatus, Bugn. 

 (nee Calotermes ceylonicus, Holmgr.) 

 Imago (apterous form) : — Brownish yellow ; head and pronotum 

 somewhat darker ; lower parts whitish yellow. Hair very scanty. 

 Head broadly oval, somewhat longer than broad. Head sutures 

 hardly visible. Compound eyes rather small, slightly protuberant. 

 OceUi almost touching the eyes. Mandibular condyle large. Basal 

 portion of clypeus short. Upper lip small, strongly bent. Antennae 

 ?-jointed, third joint somewhat smaller than second and as long as 

 fourth. 



Pronotum with somewhat widely rounded fore-angles, and with 

 unindented anterior margin. Mesonotum and metanotum obscurely 

 excavate. 



Length, without wings, 6 mm. 

 Length of head, 1-44 mm. 

 Width of head, 1-26 mm. 

 Width of pronotum, 1-07 mm. 

 Length of pronotum, 0-59 mm. 

 Locality, Peradeniya. 

 Remarks. — The imago described as Calotermes ceylonicus, Holmgren 

 (Escherich, " Termitenleben auf Ceylon "), does not belong to 

 C. dilatatus, Bugnion, as I once supposed (Zool. Anz., 1911). 



* There are about eleven principal branches to the cubitus, but these are 

 much subdivided, especially on the distal part of the wing. 



