NOVITATKS ZOOLOGICiE XXV. 1918. 415 



Genus XX. Tanaostyla. 



Motwcreagra Feld., Eeise Novara, Lep. Het., Erkl. p. 6 (indescr.) (type pheloides Feld.). 

 Tanaostyla Warr., Nov. Zool. iv. 422 (1897) (type dilucida Warr.). 



Differs from the adjacent genera in having the antenna ciliate (in the $ 

 in fascicles) and in the venation. 



Forewing with cell narrow (M much before middle of wing), SC stalked 

 beyond SC, M' well separate from R^ Hindwing with M' stalked, in occa- 

 sional sports of pheloides from Bogota SCR' coincident (= conjunctiva Warr.). 



1. orthyades Druce, Proc. Zool. Sac. Lond. 1893. p. 295. tab. 20. fig. 7 

 {Monocreagra) (sequ. ab. ?) (Ecuador). 



2. pheloides Feld., Reise Novara, Lep. Het. tab. 105. fig. 7 (1868) {Mono- 

 creagra) (Colombia). 



= dilucida Warr., Nov. Zool. iv. 422 (1897) (Colombia). 

 = conjunctiva Warr., Nov. Zool. vii. 129 (1900) (Colombia). 

 Distributed from Colombia to Bolivia. 



3. unimacula Warr., Nov. Zool. iv. 422 (1897) (Bolivia). 

 Also from E. and S.E. Peru. 



Genus XXI. Isostyla gen. nov. 



Differs from Phanoptis in the longer, slenderer palpus, ciliate (bristled), 

 not pectinate, $ antenna, stalking of M' of both wings, origm of R' of forewing 

 near R', approximation of C of hindwing to SO, and in the point of origin of 

 SC of forewing which — as Ln Tanaostyla — arises beyond SC. (Type crycinoides 

 Feld.) 



1. zetila Bdv., Lep. Guat. (1870) p. 78 (Epilais) (Guatemala). 



= nubila Schaus, Ann. Mag. Nat. Hist. (8) ix. 537 (1912) (Hyrminu) 

 (Costa Rica). 



A Costa Rica S (ex coll. Neuburger), nubila Schaus, was determined for me 

 by the late Jlr. Warren as zetila Bdv. and I have accepted the determination. 

 Nicaragua (J,J in coll. Tring Mus. are somewhat intermediate in coloration 

 towards the following species (or form ?). 



2. erycinoides crycinoides Feld., Reise Novara, Lep. Het. tab. 105. fig. 4 (1868) 

 (Dioptis) (Panama). 



= ithomeina Butl., Cist. Ent. i. 87 (1872) {Dioptis) (Costa Rica). 

 = picata Warr., Nov. Zool. vii. 130 (1900) {Tithraustes) (Ecuador). 

 2a. erycinoides purefacta Prout, subsp. nov.* (S. Ecuador). 



3. intersecta intersecta Warr., Nov. Zool. vii. 130 (1900) {Tithraustes) 

 (Ecuador). 



3a. intersecta biquadrata Prout, subsp. nov.f (Colombia). 



* Isostyla erycinoides purefacta subsp. nov. ^. 



Forewing predominantly white, the median vein and its branches proximally and SJP not 



blackened, the black discal mark narrowed. Hindiving almost entirely white, with a narrow 



black discal border. S. Ecuador : Zamora. Type in coll. Tring IVIus. 



f Isostyla intersecta higuadrata subsp. nov. Both sexes dark ; postdiscal band of forewing 

 narrowed, measuring 2-3 mm. at its widest part, usually tapering to 1 mm. at its anterior end. 

 posteriorly not crossing R^ ; the intersecting veins darkened throughout. Colombia : Cundina- 

 marca, July — August 1903, a long series of both sexes in coll. Tring Mus., collected by JI. de 

 Mathan, mostly (including the type) at Cananche, labelled by Warren (MS.) Dioptis biquadrata. 



