436 NEW AND RARE AUSTRALIAN TERMITES, WITH NOTES ON THEIR BIOLOGT, 



Head (Vi\pi. 8 aud !)) Icwig. rmimk'tl beliind, slig-litly t-urved mi tlio sidi-s, a 

 little wider anteriorly than behind, very flat in profile, "Y" suture distinct, with 

 a few reddish setae. Labiiim large, longer than wide, truncati' at the apex. 

 Clypeus more or less triangular. Gula (Fig. 10) very long, narrow in the 

 middle, one-tenth the width of head. Mandibles very long, with two broad and 

 one narrow teeth on the left and two liroad teeth on the right. Eyes small and 

 indistinet. adjacent to antennal fossae. Antennae (Fig. 11) mutilated, more 

 than 14-jointed, 3rd .joint shortest, sometimes 3rd and 4th nearly equal. i5th- 

 10th increasing in length successively, slondei-. 



Pronotum as in imago, but witli scanty, moderately stoiit, reddisli setae. 



Legs short and moderately stout. Tibial spines 3: 3; 2. 



Abdom&n elongate oval, bluntly pointed at the apex. 



Mea-^iireiiieril-'^ : 



{a\ (6) (c) 



Total length 7.0(1 8.50 9.50 



Head, from base to apex of labrum. long '2.444 2.G7() 2.773 



Head, from base to aj)ex of mandibles, long 3.290 3.290 3.570 



Head, deep O.fill — — 



Head, wide 1.4ln 1.7.S') 1.833 



Fronotum, long 0.470 0.564 0.564 



Pronotum. wide 0.750 0.087 0.087 



Tibia iii 0.t)58 0.987 1.081 



Abdomen, wide 1.2()!) — — 



The above measurements are those of the only soldiers found in the type 

 colony. The description and figures are from la), v liich appears to me most 

 probably the normal form, (b) and (c) have the head distinctiv wider and 

 more rounded, pigmented eyes, and, respectively, moderately loui; and very long 

 wing rudiments. Tlie latter are tliickene.l and clothed with long reddish setae. 

 Styli are present in all three. 



L a r V a e and iV /i m p h a e. 



Several developmental stages are distinguishable, as follows: — 



(1). Larvae. 3.05 long, 11-jointed antennae, joints 2 ;ind 3 fused, eves 

 and wing rudiments wanting. 



(2). Larvae. 5.00-5.50 long. 12-jointetl antennae, joints 2 aii<l 3 fused, 

 eyes just visible, slightly pigmented, wing rudiments wajiting. 



(3). Nymphae. (i.OO long, 13-j(iinte(l antennae, joints 3, 4 .and 5 closely 

 fused, eyes very indistinct, slightly more pigmented than (2). wiug-iiuliments 

 very small, cream coloured. 



(4). N>inphae, 0.50 long, 15-jointed antennae, joints 3 aud 4 fu.sed. eyes 

 black, wing rudiments distinctly visible, setaceous. 



Described from a small colony comprising eggs, larvae, nymphae. mature 

 aud inmiature alate forms, soldiers and iiueen, taken in a rotten log on 1st 

 .lanuary. 



In his recent paper Mjiiborg ( 1920) described two new species in this 

 genus. StoJotermes (iuecii.'<lnndiciis and .^^f. austr(dirif<, from the troiMcal forest 

 of Atherton District. North (Queensland. Previously the genus contained only 

 two species, St. brunneicnrnia Ilagen. from Tasmania (alate forms only) and 

 St. ruficeps Brauer, from New Zealand. 



Affinities. — This .species is evidently closely allied to St. hnDineicornis, from 

 which it differs in having no evident median suture in tlie head, no median false 

 ocellus-like spot between the eyes, and distinctly different antennae. In length, 



