398 GERALD F. HILL. 



This species is most nearly related to LeucGtermes ferox, Frogg. (fig. 30), a co-type 

 (alate) of which I have examined, but it is easily distinguished by its larger size, 

 darker colour, much darker and larger wings, larger eyes and fontanelle and short 

 broad head. The soldier is larger than that of L. ferox. Tn L. validiis, Hill, as in 

 L. paradoxus, Frogg. (fig. 31), ocelli are wanting in the imago, the fontanelle is minute 

 and set far back on the head, and the v/ings are much paler. 



Silvestri (1909, figs. 127, 130 and 132) refers certain large-sized soldiers from 

 Western Australia to L. ferox, Frogg., which I think are most probably referable to 

 L. clarki, sp. n. The soldiers of all the species mentioned above are very similar and 

 in most cases I have failed to find any reliable distinguishing characters ; for this 

 reason I have withheld descriptions of apparently distinct species from Queensland, 

 Victoria and Western Australia until winged forms are available for study. 



Fig. 30. Leucotermes ferox. Fig. 31. Leucotevines 



Frogg., head and prothorax payadoxiis, Frogg., head 



of imago ; from a co-type. of imago ; froin a co-type. 



Biology. 



Described from a few imagines, soldiers and workers taken on 13th May from a 

 small mound about 12 in. high, and from numerous soldiers and workers taken ini 

 September of the same year. 



References. 



Banks, N. and Snyder, T. E. (1920). A Revision of the Nearctic Termites. — 

 U.S. National Museum, Bulletin No. 108. 



Froggatt, W. W. (1896-7). Australian Termitidae, Parts 1, 2, 3.— Proc. Linnean 

 Society of New South Wales. 



Froggatt, W. W. (1915). White Ants. — Farmers' Bulletin No. 60 (Second edition) ; 

 Department of Agriculture, New South Wales. 



Fuller, C. (1920). Studies on the Post-embryonic Development of the Antennae 

 of Termites. — Annals of the Natal Museum, iv, part 2. 



