1907.] MICROLEPIDOPTERA OF TEXERIFE. 953 



29. (351-1) PROSTHESIS, gn. n. 



(7rpocr9ecrts = an addition.) 



Type Prosthesis exchosa, sp. n. 



Antennae with pecten ; (S simple, or minutely ciliate, not 

 notched, nor attenuate at the base. Maxillary Palqn short, con- 

 verging. Labial Palpi recurved, reaching above the vertex, 

 closely clothed ; terminal joint shorter than median. Haicstellum 

 scaled at the base. Head and Thorax smooth. Foreioings narrow, 

 elongate, evenly lanceolate : neuration 12 veins ; 7 aiid 8 stalked, 

 to costa. Hindwings nearly as broad as the forewings, acutely 

 lanceolate, the costa straighter than the dorsum : iwuration 7 veins 

 (3 and 4 coincident); (3+4) and 5 stalked; 6 and 7 remote, 

 almost parallel. Abdomen smooth. Legs, hind tibiae moderately 

 hairy. 



This genus agrees with Blastohasis Z., Episteius "VVlsm., and 

 Zenodochium Wlsm. in having 3 and 4 of the hindwings coincident, 

 stalked, or connate, with 5. It differs from Ejnstetus and Zeno- 

 dochium in having a pecten instead of a conchoidal shield of scales 

 on the basal joint; of the antennae, and from Blastohasis, with 

 which it agrees in having a pecten on the basal joint, in the 

 absence of a notch. 



57. (3067-1) Prosthesis exclusa, sp. n. (Plate LII. fig. 5.) 



Anteoinae stone- whitish. Paljyi stone-greyish, sprinkled with 

 fuscous ; the median joint fuscous on its outer side nearly to the 

 apex. Head and Thorax stone-grey. Foreioings pale stone-grey, 

 sparsely sprinkled with fuscous and rust-broAvn scales ; a small 

 spot at the base of the costa, a narrow fascia at one-third 

 from the base, much mixed with rust-bro^vn and strongly 

 angulated outward on the cell, whence it runs nearer to the 

 base on the dorsum than on the costa ; at two-thirds a leather 

 strong group of fuscous and brownish scales, on the dorsum, 

 is more or less connected by scattered scales across the wing- 

 to a smaller costal spot a little nearer to the aj)ex, and these 

 again are more or less connected with each other by a chain 

 of six or seven obscure maiginal spots running around the 

 apex ; cilia pale brownish grey. Exp. al. 12-14 mm. Hindwings 

 grey ; cilia brownish grey. Abdomen greyish fuscous, with narrow, 

 shining, pale steely grey, transverse bands. Legs stone-greyish, 

 thickly speckled with bro"wnish fuscous Oli their outer sides. 



Tijpe 6 (98291); $ (98298) Mus. Wlsm. 



Hab. Tenerife: Puerto Orotava, 25. IY-3. Y. 1907; La La- 

 guna, 23. Y-9. YI. 1907; Las Mercedes, 29. Y-7. YI 1907. 

 Nineteen specimens. 



