106 AUG. R. GROTE. 



line and appearance of Heterogramma, as illustrated by Gruenee. It 

 corresponds with that genus in the absence of accessory cell on the 

 primaries and the course of veins 6, 7 and 8, which are thrown off on 

 the external margin from the same stalk. Veins 3, 4 and 5 are equi- 

 distant and approximate at base. The cell is closed and there is a 

 cellular fuld. But on the secondaries vein 5 is not " recurved and 

 touching median nervure," since it issues from the discal cross-vein 

 and is but little slighter. It is not continuous, however, with tbe 

 discal fold, but is thrown off from the cross-vein nearer the median 

 nervure. Veins 6 and 7 are furcate opposite to 3 and 4. The an- 

 tennae are without peculiarity, slender. The palpi agree with those 

 of T. bifidalis, being divaricate, bent upwardly and held free from the 

 head. Structurally the difference between the two seem to be con- 

 fined to the primary wings. 



Tortricodes indivisalis, Grote. — 9- — kight brown, a little variable 

 in color, some specimens being darker. T. a. line perpendicular, followed by 

 a diffuse dark broad shade as in T. bifidalis. Median shade broadly linear, 

 waved, copying the t. p. line, which latter is narrower, inwardly angulated on 

 the disc and again on submedian fold. Subterminal line very distinct, pre- 

 ceded by a distinct diffuse deep brown shade, followed by a narrow coinciding 

 atomical pale line, copying in its course the t. p. line, deeply augulate opposite 

 the cell ; at its inception this angulation mimics that of this same line on the 

 upper lobe in T. bifidalis. An apical shade. Apices acuminate and the ex- 

 ternal margin produced at extremity of median nervules. Secondaries pale 

 testaceous blackish with an inner dark line and outer geminate linear pale and 

 dark shade lines. Beneath with double minutely dentate distinct common 

 lines, the inner somewhat undulate or irregular. Discal dots, as are the lin^s 

 most distinct on secondaries. Expanse, 22 to 25 m. m. 



Habitat. — New York, Alabama. 



On a critical comparison T. indivisalis differs from T. bifidalis by 

 the course of the t. p. line, which, in that species, after the costal an- 

 gulation, descends perpendicularly to submedian interspace, whereas 

 it is here angulated on the disc and mimics the subterminal. The gen- 

 eral color is brighter, the diffuse shade which follows the t. a. line is 

 not so dark, while the wing at base is paler than elsewhere and in- 

 creases the resemblance of the two forms. In T. bifidalis, after the 

 first very distinct outward oblique stroke of the subterminal, the line 

 becomes nearly lost and its after-course, skirting the base of the inci- 

 sion, can hardly be determined, but it appears to descend weakly to 

 internal margin. The hind wings and under-surface agree in the two 

 forms, which I am inclined to consider as merely sexes of one species, 



