105 



moths, or a vague and useless diagnosis, would be without suflQcient 

 point. But the fact has become apparent that the whole 35 Parts 

 of the British Museum Lists, when compared with the collections, 

 contain such a mass of error, that in their present shape they are 

 unavailable to the student. I have ever expressed myself as desir- 

 ous of retaining all Mr. Walker's tenable names, but from the 

 vague descriptions it will require independent testimony to identify 

 his types, even those in the British Museum collection. It is incon- 

 ceivable that the Authorities of the British Museum should have 

 permitted the publication of these Lists, which could not be 

 desired by science, since they are, for the most part, based upon M. 

 Guenee's work, and merely add a large number of inferior descriptions 

 to what we had before us in a useful shape. 



Oncocnemis Dayi, Orote, Plate 3, fig. 8. 



S . — Eyes naked, strongly laslied ; tibiae all unarmed but -with a stout 

 claw at the extremity of the shorter anterior pair; all the tarsi spinose; 

 head not retracted ; clypeus without prominence ; abdomen smooth, not 

 tufted; ornamentation Hadena-like ; antennae simple; size moderate; cor- 

 poral vestiture hairy. Fore wings and thorax mixed white and brown, 

 brightly contrasted. T. a. line not very distinct, black, thrice waved, the 

 last time sharply below vein 1 on the margin. Ordinary spots distinct ; 

 claviform pale ; orbicular round, black ringed, pale with deep brown rounded 

 center ; median shade apparent edging the reniform on the inside, apj^roxi- 

 mate to t. p. line ; reniform large, with brown center, followed by a whitish 

 shade which fills up the space left by the superior exsertion of the t. p. line, 

 and is characteristic of the species. T. p. line even, black, followed by a 

 whitish shade ; subterminal space deep brownish, with a series of broad 

 black interspaceal dashes which are very distinctive and precede the inward 

 dentations of the whitish, irregular subterminal line ; terminal space dark 

 at apices and faintly so centrally, but below the apices this is mixed with pale 

 scales which form a narrow whitish edging before the black terminal line, 

 the latter interspaceally sublunulate and interrupted on the veins ; fringes 

 with a central dark line and interrupted with pale scales opposite the 

 extremity of the veins. Hind wings rather bright clear yellow, dusky at 

 base, with a distinct broad marginal black band ; fringes yellowish at base, 

 with a dark line beyond which they are whitish. Beneath pale yellow ; the 

 costae irrorate with dusky scales ; a terminal black band which, on the fore 

 wings, is superiorly a little removed from the margin and has its outer edge 



BUL. BUF. SOC. NAT. SCI. (14) JULY, 1873. 



