186 JOHN B. SMITH. 



S. iiisolita Lint., Pap. iv. 145, Sphinx. 



Head, prothorax and tegulfe gray as in Sphinx plebein ; prothorax crossed by 

 two black lines, nearly continued on the black bordering of the tegulie, which 

 also bear an indistinct black median streak. Abdomen dark gray above, with a 

 narrow black dorsal line which is not so broad as in <S'. eremitus ; beneath paler, 

 with a black mark mesially on each segment, broader on the anterior portion, 

 forming an elongated triangular spot acute posteriorly, a broad black band bear- 

 ing five transversely elongated demi-bands of a fine creamy white color on the 

 anterior portion of the segments. Primaries narrow, acute, slightly rounded 

 costo-apically ; outer margin nearly straight ; inner margin but si ightlj^ excavated. 

 General color ashy gray near to S. cinerea; crossed by three brown bands, of which 

 the inner one arises at or near some interno-basilar lines and black liasilar patch, 

 and runs obliquely toward the cell, in which it is apparently sharply deflected 

 toward the centre; the following two bauds run from the internal margin at its 

 middle ; the median one runs with an inward curve to opposite the cell, whence 

 it is directed towards the costa at its outer third at nearly a right angle to the 

 costa ; the outer and narrower baud is angulated on the submediau fold, and theuce 

 approaching the outer margin to opposite the cell (its course beyond not traceable 

 in the specimen) ; following the band is a narrow black line parallel to it, which 

 is outwardly bordered with a whitish shade; cilia white, marked with black 

 opposite the nervules. The veins and the submedian fold have apparently been 

 clothed with black scales ; cells 3-8 bear distinct black streaks, the last two of 

 which form a nearly direct line, disconnected only by vein 7. There is an indi- 

 cation of a small white discal spot. Secondaries narrow, acute, with a broad 

 black border widenitig toward the costa; a nearly straight, central, black band, 

 separated from the preceding by a narrower grayish band, and by a still narrower 

 one from the black basilar space. Beneath, a median band, which is a continua- 

 tion of a similar one on the primaries. Expands 2.60 inches ; 65 mm. 



Hab. — Texas, Rio Graiule. 



The unique Z type is in Mr. Lintner's collection, where I had an 

 opportunity to examine it. The eyes are not very distinctly lashed. 

 The legs are subequal, rather like those in the first group, and the 

 heavy spinulation of fore tibia and weak armature of the tarsi also 

 agrees with that group. The spurs of middle and hind tibiie are 

 short. The species is a distinct one, and will be easily recognizable 

 I think. The description is almost a transcript from Mr. Lintner's 

 original characterization of the species. Nothing is known of the 

 early stages. 



S. piiiastri Linn., Syst. Nat. ed. x. 492, Sphinx ; Butl., Tr. Zool. Soc. Lond. 

 ix. 642, Hylfdcus. 

 saniptri Strk., Lep. Rhop. et Het. 118, pi. xiii. fig. 18, % ; id. 143, pr. syn. 



Dark ashy gray ; edges of collar and patagise black ; metathoracic tufts also 

 black. Dorsum of abdomen gray, with a dorsal black line. Laterally, a series 

 of alternate white and wider black demi-bands. Primaries rather evenly col- 

 ored. A distinct transverse black line from basal third of costa, widely curved 

 outwardly and then running inwardly to the inner margin close to base; some- 



