22 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



white ; median space broadly dark submetallic purple brown, bronzy 

 on the edges and irrorate with pale purple scales ; the costa is brown 

 to the base ; outer and inner lines faintly indicated in white, filiform, 

 crenulate ; three black terminal dots above the middle of the outer 

 margin ; the discal mark is situated in the cell, its lower angle touching 

 the reniform, which is faintly outlined. Hind wing white, finely 

 powdered with fuscous, except on the fringe. Beneath the fore wings 

 are silky blackish, except costa, apex, and discal mark, which are pale. 

 Hind wings silky white. Abdomen shaded with fuscous above. Expanse, 

 24 mm. 



One specimen, Tehuacan, Mexico, September, 1908, from 

 Mr. R. Miiller. 



Type No. 12221,. U. S. Nat. Mus. , 



I have placed this species in the genus Centrartha according 

 to Sir G. F. Hampson's sixth volume of the Catalogue Lepi- 

 doptera Phalaenae. It is very close to Chamaeclca gladiola 

 Barnes, described from Arizona, but differs especially in the 

 shape of the discal mark. In gladiola this is large, round and 

 full, while in requies it is less than one-third of the size and 

 roundly triangular. I have at present no specimen of gladiola 

 before me, but shall be surprised if it is not congeneric with 

 requies. This differs conspicuously from Chamaeclea pernana 

 Grote in lacking the frontal process and in having a large 

 claw on the tip of the fore tibia within. 



Genus STIBADIUM Grote. 



Stibadium laverna Druce. 



Thalpochares laverna Druce, Biol. Cent. Am., n, 496, 1898. 



A specimen before me from Tehuacan, Mexico, agrees with 

 Druce's figure of Thalpochares laverna, except in being darker 

 throughout. The difference is probably due to the freshness of 

 the specimen. It belongs, structurally, to Stibadium, as, indeed, 

 the markings and coloration would suggest. 



Stibadium psamathochromum, new species. 



Uniform pale gray, shining, the markings faintly shown ; outer line 

 filiform, strongly angled subcostally ; reniform faintly indicated; sub- 

 terminal line indicated by a pale shade, dentate at veins 3 and 4. Hind 

 wing paler, shining grayish. Expanse, 27 mm. 



One specimen, Tehuacan, Mexico, from Mr. R. Miiller. 



Type No. 12223, U. S. Nat. Mus. 



The color is paler and grayer than in c.vpallidus Grote, the 



