AMERICAN LEPIDOPTERA. 95 



less lengthily pectinate, without nodosity, tuft or crooking. In H. ser- 

 raticornis, the larger of the two species, the % antennae are more 

 shortly pectinated, the antennus is longer, while in II. longilabris the 

 male antennal pectinations are lengthy and finer. The female of this 

 latter species has simple antennae. The structure of the labial palpi 

 differs in the two species. In both they are exaggeratedly long. In 

 H. serraticornisS ( 9 ignot.) they are obliquely ascending, the second 

 joint is straight, the third a little recurved. In H. longilabris % . 

 The palpi are disproportionately elongated, projected forward, separ- 

 ating towards the tips; they are more leugthily compressedly scaled 

 and have a flattened appearance. They resemble the palpi of the 

 European H. tentacularis. Both of these smaller and lighter species 

 look excessively like Greometridae, a resemblance which is heightened 

 by their antennal structure, while the color is that of the first group. 

 My knowledge of the European forms does not afford me strict 

 analogues to these two latter American species. 



From the excellent descriptions in the eighth volume of the Species 

 General des Lepidopteres, I am at once enabled to identify the three 

 North American species described by M. Gruenee. Beyond these I 

 cannot find that our species have been intelligibly described. After 

 having compared Mr. Walker's types of Lepidoptera in the British 

 Museum Collection with the Lists. I find that little or no reliance can 

 be placed on this author's original generic determinations. Where, 

 therefore, his specific descriptions are not conclusive, it will be no 

 injustice to omit any reference to them. We ought not to encumber 

 our catalogues with a mass of apocryphal names, the existence of 

 which tends to retard our knowledge of these insects by repressing 

 our observations from a fear of synchronism. 



Ilei'ininia laevigata, Grote. — % J. — Rather pale carneous brown,vari- 



ably, more or less distinctly shaded with rich deep brown on the primaries 

 above, which, in fresh specimens, show a purplish gloss. Squamation pulve- 

 rulent. Basal half line obvious. T. a. line nearly perpendicular, followed by 

 a more or less extended diffuse dark olivaceous brown shade, which, though 

 usually extending to the small blackish elongated orbicular dot, is sometimes 

 wanting. Reniform large, lunate, usually filled in with black scales which 

 then broadly contrast; sometimes open with a darker encircling line. Behind 

 the reniform and approximate, as usual in this genus, to the transverse posterior 

 line with which it coincides in shape, is the diffuse median shade, sometimes 

 entirely obsolete, sometimes very obvious, again lost in a deep concolorous 

 brown shade which then precedes the transverse posterior line. T. p. line of 

 the usual shape, arcuatedly projected beyond the disc, where it sometimes 



