ME. G. D. HAVILAKD ON TEKMITES. 371 



Synopsis of the Genera. 



Antennse of more than 20 segments. 



Pronotum wicli convex anterior margin and 



strong lateral processes 1. Ilodotermes^ 



Pronotum witli anterior margin straight or 



concave 2. Termopsis. 



Antennse of not more than 20 segments. 



Pronotum large and arched, with concave 



anterior margin 8. Galotermes. 



Pronotum various 4. Termes. 



In this synopsis Hodotermes quadricoUis, llambur, of Chili, 

 and Hodotermes brunneicornis, Hagen, of Tasmania, are not 

 considered. They probably belong to distinct genera, but I ha?e 

 seen no specimen. 



G-en. HoDOTEEMES, Sagen. 



Eyes small, but present in every case ; ocelli absent. Fenestra 

 absent. Autennfe of from 25-32 segments, the 1st, 2nd, 3rd, 

 and 4th decreasing successively in length Suture well defined. 

 Pronotum with convex anterior portion and strong lateral pro- 

 minences. Legs slender, the proximal segment of the tarsus as 

 long as the 2nd and 3rd together. Cerci short, 2-segmeated. 

 Abdominal papillae slender (according to Hagen, present even in 

 the female). 



Male with broad round head. Epistoraa not prominent. Tarsi 

 without plantulae. Anterior wing-stumps not overlapping the 

 posterior. Wings more than 4 times as long as broad ; the 

 costal area traversed by several branches from the subcostal 

 nerve. 



Soldier with, head large, ferruginous, subquadrate. Mandibles 

 large and strongly toothed, covered at the base only by the short 

 broad labrum. Thorax and abdomen yellow. Pronotum large. 

 Mesonotum and metanotum broader than the abdomen, flat, aud 

 projecting horizontally much beyond the under portions of the 

 thurax. 



Worker with head broad and orbicular. The thorax much 

 narrower than the abdomen. 



The species of Hodotermes work by daytime in the open. 

 They enter holes in the ground, but their nests are still unknown. 



