NATURAL SCIENCES OP PHILADELPHIA. 257 



by one of ordinary powers of discrimination. Without, therefore, attempting to 

 fix at present the limits and characters of the group, more definitely than by the 

 wing structure, and rejecting the generic valves usually assigned to it, except 

 where there is characteristic variation, we will proceed to describe generic 

 groups and their individuals. 



TlNEIDjG. 



Imago with the nervules of the anterior wings radiating chiefly from the 

 posterior part of the disc, with four to five subcosto-marginal nervules, the first of 

 which arises near the base of the wing, with two simple disco-central nervules, 

 with the median nervure branching near its posterior extremity into three ner- 

 vules, medio - superior , central and posterior, with the submedian fold well marked, 

 and the submedian nervure simple and usually bifid toward the base. Posterior 

 wings with bristle, with costal nervure simple, with subcostal usually simple, 

 and attenuated toward the base of the wing, emitting a discal nervure from which 

 arise at least two disco-central nervules, with median either bifid or trifid, -with 

 submedian fold and simple submedian nervure, and an internal fold or nervure. 



Tinea Fabr. 



Head free, as broad as the thorax, roughly haired above and in front. Ocelli 

 none.- Eyes hemispherical and salient. Antennae simple, filiform, in the $ 

 very slightly ciliated, tapering from the base, with joints closely set and stri- 

 ated, not so long as the anterior wings, and scarcely as long as the body. 

 Maxillary palpi long, folded, five-jointed. Labial palpi cylindric, scaly, the 

 second article with bristles, especially at the apex above, third article small and 

 somewhat deflexed. Tongue very short, not as long as the labial" palpi. Wings 

 exceeding the tip of the abdomen ; the anterior oblong-ovate, with moderate api- 

 cal cilia ; posterior ovate, clothed with scales, and with long cilia behind. 



The following species are represented in my collection and may be tabulated 

 as follows : 



\ A semi pellucid discal spot on under surface of fore wings. 

 f Fore wings without a dorsal streak. 

 Biflavimaculella. Dark brown, tinged with violet, with a very" pale yel- 

 low costo-discal patch and one above interior angle, 

 f f Fore wings with a dorsal streak. 

 Do r si s t rige 1 la . Dark brown, with a costo-discal very pale yellowish 



patch. 

 Crocicapitella. Fuscous, with a discal yellowish spot. 



\\ No discal spot on under surface of fore wings. 

 Carnariella. Yellow-brown dusted with fuscous : a discal and two inter- 

 mediate dark brown spots. 

 L a n a r i e 1 1 a . Pale yellowish brown, or a silky pale yellow, with sometimes 



a brownish discal spot. 

 Nubilipennella. Dark fuscous, dusted with dull yellowish. 

 Variatella. Whitish, varied with dark brown, with white costal and dor- 

 sal spots. 



Medio-superior and central nervules of fore wings arise on a common stalk; last branch 



of subcostal bifid. 



T. biflavimaculella . Palpi pale yellowish, dark brown externally, 

 antennas dark fuscous, darkest toward the base. Head and front luteoue. 

 Thorax dark brown. Abdomen dark grey. Fore wiDgs umber brown, tinged 

 with a violet hue, especially toward the tip, where it prevails. On the middle 

 of costa, a pale yellow, somewhat triangular patch extended to the dise, and a 

 dorsal patch of the same hue at the interior angle ; cilia dark colored, dotted 

 on the posterior margin of the wing with pale yell&w. Hind wings grey, with 

 a bronzy hue. Exp. a!. *3 . f j lines. 



Imago, August. September. 



1859.] 



