36 MK. E. J. TILLYAED : LIFE-HISTORIES AND 



appendage. It seems therefore extremely probable that the longer appendage 

 is the more archaic form, and that the shorter one of 2\ hrevicauda has either 

 been evolved gradually from it as a more useful form, or has arisen as 

 a sudden mutation, or, possibly, as the direct inheritance of an acquired 

 character, in the Lamarckian sense. 



T. GODEFFROYi CYCLOPS, n. subsp. (Plate 3. figs. 4-5 ; Plate 4. fig. 3.) 



This subspecies differs from the type-form as follows : — 



Size considerably larger (see Table of Comparison, infra). Front much 

 less anvil-shaped, more rounded, pale brown above, with a large black 

 rounded blotch (Plate 8. fig. 28). Wings: — broader and more bluntly 

 rounded at tips. Pterostigma longer, 4*5 mm., much broader, quite 1 mm. 

 wide, not very convex ; colour straw, shading to rose in mature specimens 

 (Plate 8. fig. 15). Triangles more elongate, 5-7-celled, with basal side quite 

 1 mm. or more distal from arculus (Plate 8. fig. 19). Venation dense. Brown 

 bands very dark and irregular^ the part between base and nodus broken up 

 into two or three thick dark patches connected by narrower and paler 

 strands; nodal blotch very dark and large, about 3 mm. long and deep; 

 di-'tal half of band medium brown, regular, not passing under pterostigma. 

 Membramde 1'5 mm., white, exceedingly narrow (Plate 8. fig. 31). 



Venation at nodus as shown in Plate 8. fig. 23. 



Thorax. — -Almost black above, with straw-coloured dorsal and interalar 

 ridges; humeral hands very narrow, pale brown, not very distinct; sides 

 greyish brown, with a short dark line fringing the humeral band close to 

 wings. The dark dorsal and pale lateral areas of the thorax are marked 

 ofE very distinctly at the humeral bands. Legs pale brown except for 

 conspicuous black patches on elbows. 



Abdomen. — Shaped as in type-form, but with a distinct pattern of pale 

 straws-brown overlying the dark brown ground-colour. 1, pale brown except 

 for a dorsal apical squarish spot; 2, pale on sides and auricles of ^J ; 3 with 

 pale base and pale dorsal stripe, indistinct; 4-7 with pale lateral basal sub- 

 triangular blotches pointing downwards and outwards. In ^ , 10 distinctly 

 more sharply tubercled dorsally than in type-form. The pale pattern is less 

 distinct in ? , and may become obliterated with age. Appendages of ^ . — 

 Superior 4'4 mm., very similar to those of type-form, but converging so as 

 to meet, and ending in a tiny inward spine : inferior as in type-form. In the 

 ? the dentigerous shelf of segment 10 is not so incised medially as in tj^pe- 

 form, and the teeth are somewhat more regularly arranged. 



Types: c? ? , Coll. Tillyard. (c?, Dorrigo, N.S.W. ?, Mount Tam- 

 bourine, Q.) 



Habitat. Mountain scrubs of northern N.S.W. and southern Queensland. 

 Apparently rather rare. December to February. 



