204 MB. A. G. BUTLER ON THE URAPTERTGIl)^. 



2. Xeroptertx simplicioe, sp. n. — Brownish grey, trans- 

 versely striated witli darker grey ; costal borders, fringes, and 

 tlie outer margin of secondaries white ; the latter wings with a 

 diffused longitudinal reddish nebula above the tail ; a black spot 

 on each side of the tail : wings below white, with black markings 

 as in X. colmnhicola. Expanse of wings 58 millim. — Sarawak, 

 Borneo. Type B.M. 



Chiefly differs from X. columhicola in the absence of the large 

 sulphur-yellow spot and crescent upon the primaries. 



J^scHROPTERTx, gou. uov. (Plate IX. figs. 7, 8.) 



Form of Gonortlius ; neuration nearly as in TJra'pteryx,\)vX\)sxQ 

 antennee of the male simple. Type M. tetragonata. — Ohcerodes, 

 Gruenee (preoccupied in Coleoptera). 



1. ^scHROPTERTX TETRAGONATA. — Chgerodcs tctragouata, 

 Guenee, Phal. i. p. 36, pi. 8. fig. 1 (1857).— C. bifiliaria, Felder, 

 Beise der Nov., Lep. iv. pi. cxxii. fig. 1 (1875). — S , Venezuela, 

 Quito. B.M. 



2. JEscHROPTEBTx TRANSPECTANS. — Cliserodes transpectans, 

 Walker, Cat. Lep. Set. xx. p. 22 (I860).— 5 , Venezuela. Type 

 B.M. 



The following species also belong to the genus : — Chcerodes 

 sectata and C. invisata of Gruenee, G. striata of Stoll, and 

 C invariaria of Walker. This genus concludes the true 

 Urapterygidae. 



EXPLANATION OF PLATE TX. 



