180 GROTE & ROBINSON. 



List of the Butterflies of New England," Mr. Scudder accepts the 

 separation of Thecla acadica from the Thecla falacer of the original 

 " List." Retaining still a Thecla faJuwr (probably without having as 

 yet seen our description of T. inorata) it seems tolerably certain that 

 the species now intended is either T. calanus or T. inorata. From 

 what we know of its geographical distribution, the name of Thecla in- 

 orata may be added to the number of the species of this genus found 

 in the New England States. 



Family SPHINGIDAE. 



Tribe MACROGLOSSINI. 



SESIA, Fabr. 

 Sesia axillaris, n. s. 



% $ . — Size rather large, form stout. Black. Head and thoracic 

 region above, obscure yellowish olivaceous; this color extends over 

 the basal segments of the abdomen. Antennae and legs black. La- 

 bial palpi beneath, and under thoracic surface, pale yellowish-white. 

 At the sides, behind the eyes, are linear blackish .shades. Eyes nar- 

 rowly edged above with white scales. Above, the palpi are black. 

 Abdomen black, except at base as above noted ; the two preanal seg- 

 ments are yellowish, this color extending over the sides, but not ob- 

 taining centrally beneath. Anal tuft black; in one specimen mixed 

 centrally with olivaceous hair. 



Wings largely vitreous ; primaries with a very oblique yet rounded 

 external margin. Anterior wings with an obscure brown costal edging 

 and brown at base, where they show a few olivaceous .scales. The dis- 

 cal cell is free. A terminal, A'ery broad brown band, tapering to inter- 

 nal angle, and ver}' strongly dentate on the interspaces within. The 

 apical and two succeeding nervular interspaces are shaded with red 

 scales within, from the apex downwardly and inwardly obliquely, in 

 such a manner that the border on the apical interspace is almost wholly 

 red, while on the two succeeding interspaces the red scales merely 

 touch the toothed inner edge of the border. Secondaries largely vitre- 

 ous. An even, narrow, brown terminal border, regularly and shortly 

 dentate on the middle of the interspaces. Base of the wing and inter- 

 nal margin fuscous or blackit-h. The fuscous basal scales extend aloni;- 

 costa very narrowly towards the apices. Five nervules are clearly ex- 

 posed on the pellucid field of the wing. Beneath as above ; the exter- 

 nal borders tinged with reddish. 



Expanse, 52 mil. Length nfhodi/, 2G mil. 

 Habitat. — Texas, (Belfrage.) Four specimens. 



