192 . THE ENTOMOLOGIST. 



NOTES ON THE SYNONYMY OF NOCTUID MOTHS. 

 By Arthur G. Butler, Ph.D., F.L.S., &c. 



(Continued from p. 49.) 



Ercheia, Walk. 

 To this genus belong Achaa sypnoidcs, Sypna complicata, 

 Acluea suhsignata, Ercheia umbrosa and charon (which may 

 possibly not be distinct from E. dubia), Acluea cyllaria, and 

 Ercheia diversijjennis. 



Ercheia cyllaria. 



Phalana cyllaria, Cramer, Pap. Exot. iii. p. 100, pi. ccli., 

 figs, c, D. 



Achcsa cyllota, Guenee, Noct. iii. p. 248, n. 1669 (1852). 



A.fusifera, Walker, Lep. Het. xiv. p. 1398, n. 16 (1857). 



A. signivitta, Walker, I. c, n. 17 (1857). 



A. poly chroma, Walker, I.e., p. 1400, n. 21 (1857). 



Ercheia tenehrosa, Moore, Proc. Zool. Soc. 1867, p. 66. 



Moulmein, Ceylon, Andamans, Nilgiris, N. W. Himalayas, 

 DarjiliDg, Borneo. In Coll. B. M. 



The extreme variability of the upper surface of the primaries 

 in this genus is now well known ; the spotting of the secondaries 

 above and the pattern of the under surface can alone be relied 

 upon. 



Ercheia diversipennis. 



Ercheia diversipennis. Walker, Lep. Het. xiii. p. 1108 (1857). 



E. pannosa, Moore, Proc. Zool. Soc. 1883, p. 24. 



E. ziira, Swinhoe, Proc. Zool. Soc. 1885, p. 465. 



E. zygia, Swinhoe, I. c. 



Nilgiris, Bombay, Poona, Canara, Ceylon. Type in Coll. B. M. 



This species varies much in the same way as the preceding, 

 from which the pattern of the secondaries is the chief distin- 

 guishing character, the three white spots across the centre being 

 more or less united into a band. Whether this distinction can 

 'be maintained when long series of both forms have been received, 

 remains to be proved. At present, E. diversipennis holds its own 

 as a fairly distinct form from E. cyllaria. The forms associated 

 above differ only in the pattern of the primaries, which is 

 undoubtedly as variable as in the other species of the genus. 



QpHiODES, Guen. 

 1.: ,: ; Ophiodes mejanesi. 



Ophiodes mejanesi, Guenee, Noct. iii. p. 232, n. 1641 (1852). 

 Ophisma expedita. Walker, Lep. Het. xiv. p. 1375, n. 15 



(1857). 



