﻿NEW SPECIES OF HETEROCERA FROM FORMOSA. 19 



Altha suhrosea, sp. n. 



$ . Head, thorax, and abdomen yellowish buff, transversly marked 

 with reddish. Fore wings yellowish buff, costa suffused wnth white 

 especially towards apex ; two double whitish lines on the dorsal 

 area, not continued across the wing ; three pale edged reddish brown 

 spots at base of the wings, one at outer end of the cell, and an 

 oblique series of five beyond the cell ; fringes of the ground-colour, 

 preceded by pale edged reddish brown lunules. Hind wings red, 

 costa yellowish. Under side yellowish buff, all wings suffused with 

 red on the disc. 



Expanse, 28 millim. 



Collection number, 1261. 



Two female specimens from Kanshirei, June 5th, 1907, and 

 July lOtb, 1908. 



Thosea riifa, sp. n. 



(?. Head, thorax, and abdomen reddish brown. Fore wings 

 reddish brown ; postmedial line oblique, whitish, inwardly edged with 

 dark purplish brown, slightly broadened on dorsum ; subterminal line 

 dusky, outwardly oblique from costal end of postmedial line to the 

 termen just above the tornus ; apical part of terminal area, limited 

 by the oblique subterminal line, slightly greyish tinged. Hind 

 wings, and under side of all the wings, fuscous brown. 



Expanse, 24-30 millim. 



Collection number, 1260, 



Two male specimens. One from Suisba, July 21st, 1909, 

 the other from Kanshirei, April 10th, 1908. 



Drepanid^. 

 Maa'ocilix misticata Jiavotincta, ab. nov. 



$ . Head white, thorax orange brown, collar and patagia yellow. 

 Fore wings, upper part of band somewhat narrower than in typical 

 misticata, and its dorsal extremity is orange brown shaded on each 

 side with yellow. On the hind wings the tornal area is suffused 

 with grey, obliterating the typical black marking. 



Expanse, 48 millim. 



Collection number, 1831. 



A female specimen from Arizan, August, 1908. 



NOTES AND OBSEKVATIONS. 



Formaldehyde useful in Setting Insects. — I am interested 

 to see Mr. St. John's notes on the use of formaldehyde in setting 

 insects (Entom. xlvii. p. 325), as I have occasionally used it myself 

 for some years past, being led to try it by the extreme rigidity of 

 insects killed by its fumes. My method was to remove an insect from 

 the setting board after ' initial set ' had occurred, and lightly to touch 

 the bases of the wings, where they join the body, with a camel-hair 

 brush dipped in a 10 per cent, solution of formaldehyde, when the 



