91 



to stand : — H. sphe^iophora, Turn. ; H. chlorometis, Meyr. ; H. 

 hyalota, Meyr. ; S. cyanura, Meyr. ; H. antitheta, Meyr. ; ff. 

 humeralis, Butl. ; H. eschatias, Meyr. ; II. trigonophora^ Turn. 



There are three of Meyrick's species, concerning which, from 

 lack of material, I am unable to form an opinion : — Uydrusa 

 paraula, Meyr.; H. anepsia, Meyr. ; H. macroplaca, Meyr. 



In determining the species, the wing markings are of little 

 value in most instances, as they are both very similar in different 

 species, and variable in the same species. I have followed 

 Meyrick in assuming a normal five spots on the forewings in each 

 instance. A connecting spot between the fourth and fifth is 

 sometimes present. Its full development, so as to unite these 

 two into one large spot, is an important character, but its partial 

 development is valueless, as a small spot in this region is 

 frequently present, or completely absenc, in one and the same 

 species. Occasionally the first and third spots are partially 

 confluent as an abnormal variety, but I have never seen them 

 completely merged except in II. ecliptis and II. lampetis, where 

 they are combined. The white apices to the antennse of some 

 species is a valuable character, also the presence or absence of 

 yellow or orange spots on the thorax. The thorax is, however, 

 frequently rubbed in imperfect or badly-pinned specimens. The 

 presence or absence of orange on the posterior abdominal 

 segments also furnishes good characters, though a slight extent 

 of variation must here be allowed for. 



I have given a complete list of the known Australian species 

 of this family, and have incorporated the localities given in 

 Meyrick's paper. But the section of the Hydrusa with black 

 anal segments still remains in an unsatisfactory condition; 

 H. leucacma, Meyr., is a well-defined species ; for the discrimina- 

 tion of the other forms new series of specimens are required. 



In Plate V., which is reproduced from a photograph, figures 1 

 to 6 inclusive and 8 are varieties of II. aperta, Walk. ; 7. J2" 

 trigonophora, n. sp.; 9. H. leucaciyia, Meyr. ; 10. II. orphncea, 

 n. sp. ; 11. II. ecliptis, Meyr.; 12, H. lampetis, n. sp. ; 13. 

 H. phepsalotis, Meyr.; 14. //. pyrrhodera, Meyr. 



AGAPHTHORA, Meyrick. 

 Agaphthora melanora, 3Ieyr. 



I know of only the type specimens in the Macleay Museum* 

 which are from Cape York, Queensland. 



Agaphthora sphenodes, Jleyr. 

 Cairns, 'Queensland ; Macleay and Queensland Museums. 



SYNTOMIS, Ochsenheimer. 

 Tongue well developed. Antennse in male simple, without 

 serrations, with very short even ciliations (J). Palpi short, 



