BY R. J. TIU.YARI). 



117 



of Mnemonica, but larger, and not occurring in the hindwing. 

 This is properly regarded by Meyrick as a primitive character, 

 since R, was certainly originally a branched vein. In the same 

 region of the hindwing, however, we meet with a very remark- 

 able specialisation, viz.. the capture of Kj, not far from its distal 

 end, by Sc 2 . Asa consequence of this, Rj tends to shorten, and 

 finally to become aborted basad from this point In the type 

 species of the genus, S. incongruella Walk., the basal portion of 

 Rj is alreadv obliterated, and the rest of the vein appeal's as a 

 short " returning " or " recurrent " vein attached to Sc„, as shown 

 in Text-fig. 7. I find this condition in all my specimens of this 

 species, and also in S. barbaricd Philpott. In S. caustica Meyr., 

 the recurrent portion of R x is reduced to a small stump, about 

 the size of a scale from the same wing, as shown in Text-fig. 8,6. 

 In S. ccdliplaca Meyr., the only known Australian species, even 

 this stump is absent, and there is no sign at all of the presence 



Text-fig. S. 

 ". Portion of venation of hindwing of Sabatinca chrysaryyra Meyr. ( -2.3) 

 to show the complete Rj. b. Portion of venation of hindwing of S. 

 caustica Meyr., to show small remnant of R, attached to .Sc_, ( x 60). 

 C, Portion of venation of hindwing of S. calliplaca Meyr., with H, 

 entirely eliminated, ( x 2.3). 



of Rj (Text-fig. 8, c). On the other hand, in both my specimens 

 of S. chrysaryyra Meyr., R, is still complete, though very weakly 

 formed basally. One specimen shows Rj arising exactly from 

 the forking of Rs into R2+S and R4+5 (Text-fig. 8, a), while the 

 second shows it arising somewhat further distad along R-?+3- 

 Both conditions are, of course, specialisations from the original 



