XORTII AMERICAN LEPIDOPTERA. 179 



Head dull gray, brownish on the occiput and sprinkled with brown hairs. 

 Eyes dull black, surrounded by a blackish ring of hairs. Tegulpe wholly cine- 

 reous. Abdomen blackish gray, with narrow black dorsal line and six rather 

 broad deini-bands of dirty white, blackish on the posterior mai'gius of segments. 

 Thorax and abdomen beneath dull brownish gray. Primaries fuscous, with a 

 grayish space running from base to about half way along the middle of wing 

 and an irregular submarginal band from internal angle to apex, the outer edge 

 of which is deeply dentate ; near the median nerve are three straight black 

 dashes and a bent one toward the apex. Fringes brown, sprinkled with gray. 

 Secondaries fuscous, with two dull whitish bands, slightly waved, the outer one 

 parallel with the margin of the wing for three-fourths of its distance. 



The variety idahensis is described by Mr. Edwiird.s as iiuich larger 

 than the type form, of a grayer cast, without any trace of pinkish 

 yellow. The primaries preserve the resemblance to the type form ; 

 the secondaries have the median band much broader, straight and 

 not waved on its outer edge ; it terminates also on the costa nearer 

 to the base than in drupiferarmn. The abdomen is a darker gray, 

 and the demi-bands are reduced to small, oblong patches. It ex- 

 pands 4.50 inches, = US mm., and is from southern Utah. 



A complete life history of the species has been written by Mr. 

 Reed in the " Canadian Entomologist" iii, p. 5, with figures. Mr. 

 Lintner has added a careful description of the pupa. 



S. perelegaii.S Hy. Edwards, Pr. Cal. Ac. Sci. v, 109. Sphinx: id. vi, 93, 

 Sphinx; Butl., Tr. Zool. Soc. Lond. ix, 621, ? Lintneria ; Pap. i, 105, Sphinx. 

 Head pale, silvery gray, black on occiput. Thorax with the tegulse and sides 

 gray ; disc velvety black, uniting with the black on the upper side of head, and 

 forming, when viewed from above, a long, triangular patch ; centre of thorax 

 gray at the base. Abdomen dark gray, sprinkled with black, with narrow black 

 dor.sal line. The five basal segments are equally divided into black and white 

 demi-bands, the black being very intense and glossy ; under surface of thorax 

 gray, with central interrupted black line. Antenuse white above, dark gray 

 beneath. Tibiae grayish brown, with tarsi paler. Primaries fuscous, with many 

 paler waved lines and a whitish space reaching from base over half way along 

 the costa, but not extending to its edge. Besting upon this pale space arc five 

 bent black lines of unequal length, and a bent line at the apex reaching to the 

 tip. Along the margin, from internal angle to apex, is a pale submarginal band, 

 very faintly dentate externally, running parallel with the margin until it reaches 

 the apex, where it spreads into a wider space, receiving the before-mentioned 

 bent apical line. At the base of interior margin is a clouded black patch. The 

 fringes are brownish black, dotted on their edge with six conspicuous white 

 patches, which do not, however, entirely cross the fringe. The whole of the 

 fringe on the interior margin is brownish black. Secondaries black, with brown- 

 ish tinge ; a broad, whitish band at the base, widest posteriorly ; a narrow grayish 

 white band crossing the wing obliquely, almost parallel with the margin, but 

 slightly bent a little behind the middle. Fringes white, intersected with brown. 

 Expands 3.64 inches; 41 mm. 



Ha b. — Cal i fo r n i a . 



