I/EPIDOPTEEA OF THE FAMILY ZYGiENIDiE. 353 



hyaline ; spots of primaries almost precisely as in H. annulata ; se- 

 condaries with only the basal two fifths pale tawny, no black dot below 

 origin of first median branch ; postcellular bifid spot very large : ab- 

 domen below having all the segments banded with orange as above ; 

 wings as above : expanse 44 millims. 

 Hunter River {Macgillivray). Type, B.M. 



As this occurs almost at the same spot with H. annulata, it is 

 possible that it may be a curious modification of that species. 



4. H. iNTENSA, n. sp. 



Allied to the preceding, much smaller, wings narrower, coloration alto- 

 gether darker ; all the wing-spots deeper tawny and considerably 

 smaller : expanse of wings 29 to 36 millims. 



Sidney {Lambert), Australia {Hunter, Macgillivray, 8fc.). Type, B.M. 



This is one of the most distinct-looking species of the H. annu- 

 lata group ; we have seven specimens in the British Museum. 



5. H. iNsuLARis, n. sp. 



Head deep orange, crest with a transverse brown line ; antennae black, 



greyish at the tips ; thorax black ; abdomen orange, with the anus 



and six transverse bars black ; wings black ; primaries with five orange 



spots arranged much as in H. intensa, but smaller, opaque, the two 



below median nervure only separated by a slender brown streak ; the 



lower discal spot bifid ; secondaries with basal third, and a small spot 



above end of cell, deep oi'ange : below as above : expanse of wings 35 



millims. 



Barnard Isles {Macgillivray). Type, B.M. 



This species is more nearly allied to the type H. licolor of 



Walker than are any of the other species of this group. 



The arrangement of the genera of Thyretinse seems to be Eu- 

 tomis, Epitoxis, Pseudonaclia, Asinusca, Hydrusa, Psichotoe, Tria- 

 nura (n. gen.), Procotes (n. gen.), Notioptera (n. gen.), Thyrassia 

 (n. gen.), BalatcBa, Artona, Bintha, Tascia, Saluinoa, PJiacitsa, 

 Tliyretes, ? Apisa. The last-mentioned genus differs from the 

 others in its more hairy body and longer palpi, which, togetlier 

 with its pale greyish coloration, induced Walker to place it at 

 the end of the Liparidae ; but in all other respects it resembles 

 Thyretes. See also South- American genera (postea). 



Tkianeuea, n. gen. PI. XXVIII. fig. 3. 



Nearly allied to Jlydrusa, but at once distinguished by the ar- 

 rangement of the branches of the median nervure in secondaries, 

 the third median (of Jlydrusa) having passed round to the disco- 



