608 Pieter C. T. Snellen on a 



The teeth at the base of the antennae and the blackish 

 anal brush are also wanting in both species. According 

 to Guenee, Cydalima nitidicostalis is larger (41 mm.), and 

 has a dark-scaled nervulation. 



Sisyrophora Pfeifferce, Lederer, p. 399, taf. 12, f. 13, 

 must also be an allied species, but the figure shows a 

 somewhat more robust insect, with smaller hind wings 

 and entirely dark collar. Besides, the figure which 

 Lederer gives of the basal part of the antennae (taf. 5, 

 fig. 8) is different, and the " rauhe Beschuppung am 

 Fuhlerschaft " is wanting. He also says nothing of a 

 depression of the vertex, though it is conspicuous in 

 Elivesialis. 



Dedicated to H. J. Elwes, Esq. 



Sikkim; Moller (one specimen of 33 mm.). Sumatra, 

 Deli; Schagen van Leeuwen (the other two). 



[This must be a common species from the number in 

 Holler's collection, but I never took it myself. It occurs, 

 however, at Mongpo, 4000 ft., and in Bhutan. I have 

 also two specimens from the Naga Hills. — H. J. E.] 



Genus Pachyarches, Led., Wien. Ent. Mon., vii., p. 398. 

 145. Pachyarches psiUacalis. 



Parades jysittacalis, Hiibner, Zutrage, 3-tes Hundert, 



p. 30, f. 523, 524. 

 Margarodes psittacalis, Guenee, Delt. et Pyr., p. 308. 

 Pachyarches psittacalis, S. & C, No. 4213. 



Sikkim ; Moller. 



[Not uncommon at low elevations. Occurs also in 

 China and the Khasia and Naga Hills. — H. J. E. [ 



^ 146. Pachyarches vertumnalis. 



Margarodes vertumnalis, Guenee, Delt. et Pyr., p. 309. 

 Pachyarches vertumnalis, S. & C, No. 4215. 



Mr. Warren's opinion is ilid^i Margarodes sqiiamopedalis, 

 Guenee {Enchocnemidia sqiiamopedalis. Led.)' might be 

 the male of vertumnalis, Guenee. This is perhaps right ; 

 I have no male of vertumnalis, 



Sikkim ; H. J. Elwes. 



