594 REVISION OF AUSTRALIAN LEPIDOPTERA, V., 



edge. Tongue well developed. Palpi rattier long, ascending;: 

 second joint rough-haired beneath; terminal joint stout, obtuse, 

 well developed in both sexes. Antennse in ^ pectinated, apices 

 simple; in ^ simple. Thorax and abdomen not crested; thorax 

 moderately or densely hairy beneath Posterior tibise with all 

 spurs present; in ^ sometimes strongly dilated, with a short stout 

 terminal process. Hindwings strongly angled on vein 4; with a 

 modei'ately strong costal expansion at base; frenulum in ^ rather 

 slender, retinaculum near base of forewing; frenulum in J obsolete. 

 Forewings with 3 and 4 usually short-stalked, rarely connate, 6 

 stalked, 11 free. Hindwings with 3 and 4 stalked, 6 and 7 

 stalked, 8 closely approximated to cell as far as middle, then 

 diverging; discocellulars nearly straight, slightly wavy, strongly 

 oblique, costal edge of cell §. Type, Thalassodes quadraria Gn. 

 As restricted, this is a small genus, which I regard as a 

 development of Prasinocyma having most affinity to P. ocyptera 

 and P. albicosta. Its most striking characteristic is the extremely 

 oblique margin of the cell of hind wing, with its appreviated costal 

 edge. The three species are extremely similar. 



1. Face purple -brown 51. quadraria. 



Face green 2. 



2. Posterior tibite of 3' dilated . 52. veraria. 



Posterior tibise of c? not dilated 5,3. dorsilinea. 



51. Thalassodes quadraria. 



Thalassodes qaadraria Gn., Lep. ix. p. 360; Hmps., Moths Ind- 

 iii. p. 507: Geometra digressa Wlk., Cat. Brit, Mus. xxii. p. 5 13; 

 Geometra dissita Wlk., Cat. Brit. Mas. xxii. p.519; Geometra 

 semihyalina Wlk., Cat. Brit. Mus. xxii. p. 528; Thalassodes 

 dissepta Wlk., Cat. Brit. Mus. xxii. p. 550; Thalassodes immi- 

 saria Wlk., Cat. Brit. Mus. xxii. p.553; Thalassodes iepulsata 

 Wlk., Cat. Brit. Mus. xxii. p.555; Thalassodes iuconclusaria 

 Wlk., Cat. Brit. Mus. xxii. p. 556; Thalassodes byrsopis Meyr., 

 Proc. Linn. Soc. N. S. Wales, 1886, p.249; lodis byrsopis Meyr , 

 op. cit., 1887, p. 902; lodis implicata Luc, op. cit., 1891, p. 293. 



Palpi in (J 1|; terminal joint |. Posterior tibise oi ^ dilated,, 

 with a groove containing a tuft of hairs on inner side, terminal 



