1864.] 91 



verse posterior line inferiorily, are sparsely and irregularly sprinkled 

 with blackish marks. Posterior wings resembling anterior, external 

 margin acutely angulated; basal space pale fawn color along internal 

 margin, superiorily of the same yellow as on the anterior wings ; me- 

 dian line brownish, appearing as the continuation of the transverse 

 posterior on the anterior wings, with similar white dots on the veins; 

 subterminal line as on anterior wings indicated by blackish dots on the 

 veins, most prominent at anal angle. Under surface of both wings 

 yellowish, tinged with orange, irregularly speckled with purplish marks 

 and showing on the anterior pair a disconnected subterminal and me- 

 dian line emanating at the costa from a purplish sub-apical mark which 

 is bordered posteriorly with whitish. Abdomen and thorax pale fawn- 

 color, head above, purplish; legs pale fawn-color, sparsely speckled, 

 anterior tarsi and tibiae purplish on their upper surface, hind tibiae 

 moderately incrassated; antennae simple. % . Exp. ly**g inches. 

 Hub. Maryland. (Coll. Ent. Soc. Philadelphia.) 



Tetracis lorata, nov. sp. 



Anterior wings entirely pale-yellow, without markings of any kind 

 except an oblique, distinct, nearly straight ochraceous stripe, which 

 traverses the wing from the costa, near the apex, to internal margin. 

 Posterior wings white, silky, immaculate, with a sHght pale yellowish 

 tinge along the external margin which is rounded in both sexes. Tho- 

 rax and head pale-yellowish ; abdomen whitish, immaculate ; legs whit- 

 ish, the anterior tibiae and femora slightly touched with ochraceous ; 

 eyes pale brownish. The external margin of the anterior wings is promi- 

 nently angulated at the extremity of the first inferior vein, and the 

 apex is acute, in the $ , while in the S the external margin is almost 

 rounded and the apex obtuse, as is the case with its congeners. Exp. 

 Ij to 2 inches. 



Nab. Eastern and Middle States. (Coll. Ent. Soc. Philad.) 

 This species is readily distinguished from the already described N. 

 American species of this genus by its immaculate wings, which are 

 utterly destitute ( S & ? ) of other ornamentation than the single och- 

 raceous stripe on the anterior pair. It would appear to be allied to 

 T. Cachexiata Gruenee, a species described from New Holland, while 

 it forms a group in the genus characterized by the hardly angulated 

 external margin of the posterior wings. 



