184 JOHN B. SMITH. 



the thorax has the tegulfe edged inwardly with black, iu the form of a long tri- 

 angle. Ill libocedrus this mark is present, and in addition the tesulfe themselves 

 have a distinct black streak, reaching to the base of the head, not observable in 

 either of the others. The under side of the wings is paler gray, with the median 

 band of secondaries very strongly marked. Expands 2.50 inches ; 62 mm. 



Hab. — Prescott, Arizona. 



This species I have casually noticed in Mr. Edwards' collection, 

 but without making any closer study of it. It is apparently a much 

 smaller species than chersk and more evenly colored than vashtl. It 

 probably has a similar tibial armature to vashtl. So far as I am 

 aware nothing is known of the early stages. 



Since the above was written a specimen has turned up among the 

 Belfrage material in Prof Riley's collection, now in the Museum. 

 It has been submitted to Mr. Edwards, who confirms my identifica- 

 tion. It agrees very w^ell with ]Mr. Edwai-ds' characterization save 

 that the demi-bands of abdomen have a decided yellowish tinge and 

 the markings of the secondaries are obscure and not as prominent as 

 in the type. The specimen is unfortunately a 9 ) ^"d the species is 

 a good one I believe. The armature of tibia and fore tarsi does not 

 differ in any important particular from that of chersls. 



S. Chersis Hiib., Saraml. ii, pi. .380. Lethia ; G. & R., Pr. E. S. Phil, v, 165, 190, 

 Sphinx; Beth.,* Can. Ent. i, 17, Sphinx; Bd.,* Sp. Gen. Het. i, 93, Sphinx; 

 Butl., Tr. Zool. Soc. Lond. ix, 617, Sphinx; Edw , Pap. iii, 127; Feruald,* 

 Sphing. N. E. 42, Sphinx ; Grt., Hawk Moths 44, Sphinx. 



cinerea Harr.,* Sill. Journ. 36. 295. Sphinx ; VVlk.. C. B. M. Lep. Het. viii, 217, 

 pr. syn.; Clem.,* Journ. Ac. N. Sci. Phil, iv, 1859, 169, Sphinx; Morr.,* Syn. 

 1862. 194, Sphinx; Lint.,* Pr. E. S. Phil, iii, 655; G. & R., Pr. E. S. Phil. v. 

 165, pr. syn. ; Scud.,* Psyche ii, 76 ; Bd., Sp. Gen. Het. i, 93, pr. syn. ; Hageu, 

 Pap. iii, 62. 



oreodaphne Hy. Edw., Pr. Cal. Ac. Sci. v, 109 1874, Sphinx; id. vi, 93. pr. 

 syn.; Butl., Tr. Zool. Soc. Lond. ix, 618, Sphinx ; Strk., Lep. Rhop. et Het. 

 142, pr. syn.; Butl., Pap. i, 104, an sp. dist. ; Holland, Can. Ent. xviii. 103, 

 pr. syn. 



Head, palpi and thorax ashy gray. A brownish stripe extends from the apex 

 of the palpi to the eyes, and is continued as a black line along the side under the 

 wings. The patagiie are edged above with black, and the metathoracic tufts are 

 of the same color. The abdomen is ashy gray, with a central blacK line, and a 

 broad black band on each side broken by four or five white demi-bands. The 

 under side is paler than above, and has a row of small black spots along the mid- 

 dle of the abdomen. The primaries are ashy gray, with a dark smoky brown 

 cluster of hair like scales at the base, behind the origin of vein 1. The discal 

 spot is not usually perceptible, but a black line runs along the middle of the 

 outer part of the cell, crossing the position of the discal .spot. There are black 

 dashes between all the veins below the apex, the last two often uniting in an ob- 



