SPHINX. By Dr. M. Draudt. 
859 
surface of the abdomen are smaller. — pallescems R. & J from Arizona and Colorado, forms a transition to the pallescens. 
following subspecies: as large as chersis, whitish-grey as mexicanus and with the same white-spotted fringe. - 
mexicanus R. & J . is darker in general, although the ground is a purer whitish-grey, without the loamy shine, mexicanus. 
The fine markings are more distinct, fringe spotted white; the black discal band of the hindwing broad. Mexico. 
S. adumbrata Dyar (94 f) is very similar to chersis, smaller, abdomen with 5 pale sulphureous white adumbrala. 
spots laterally, with a fine black dorsal line above; besides the usual black longitudinal streaks on the forewing 
there are yet double fine postcellular streaks, 1 long fine one in the cell, and a fine submedian streak. Mexico 
(Zacualpan). 
S. vashti Stkr. (= vancouverensis auct., drupiferarum Holl.) resembles the preceding species in the vashti. 
scheme of markings, but distinctly differs in the almost white collar and tegulae, the latter intensely edged with 
black inwards. The whole basal costal-marginal portion of the forewing is greyish-white like the terminal area, 
centre of thorax grey. This is the spring-form from hibernated pupae. — albescens Tepp. (95 a) is the summer albescens. 
form with a blackened thorax. California, to the west as far as the eastern slopes of the Rocky Mountains. - 
gerhardi B. & Benj. is a more intensely strewn form, without any brownish tint, the black subterminal line gerhardi. 
between 6 and 2 is thicker black; thorax somewhat more coarsely clothed. South Nevada. The green larva 
with white oblique stripes edged anteriorly with black, and with a black horn lives on Symphoricarpus racemosus. 
McDunnough most meritoriously cleared up the complicated synonymy by examining the types, the type of 
vancouverensis originates from California and is synonymous to perelegans Edw. 
S. niordecai McDunn. ( — albescens R. & J., nec Tepp.) (94 f) is extremely similar to vashti , but much mordecai. 
darker, and with a blackened mesothorax like albescens ; the species is smaller on the whole than vashti and is 
easily discernible from it by the black subterminal line of the forewing forming an acute angle between veins 
2 and 3 and then extending towards the anal angle, almost reaching the inner margin, whereas in vashti it vanishes 
far before this without a flaw; moreover it mostly lacks the interior line accompanying it, or it is very indistinct 
at least. Vancouver; British Columbia. 
S. libocedrus Edw. (95 a) resembles chersis and is smaller than vashti ; tegulae finely edged with brown libocedrus. 
inside. The yellowish or white lateral spots on the abdomen are bordered with black all round; the interior angle 
of the forewing is less rounded than in the allies. The nomenclatural type shows more purely white lateral spots 
on the abdomen. Arizona. — insolita Lintn. (= libocedrus Smith), from Texas, shows yellowish lateral spots, insolita. 
The larva is unknown. 
S. perelegans Edw. (= vancouverensis Edw.) is very similar though larger than the preceding species; perelegans. 
uniformly silvery grey, recognizable by the fine white streak on vein 6 being prolonged into the cell; the black 
submarginal line is indistinct. Mesothorax black. California, British Columbia to the Rocky Mountains. — 
asellus R. A- J . is a much lighter form with a grey mesothorax and a broader white submarginal band. Oregon, ascllus. 
Colorado, Arizona. Larva unknown. 
S. canadensis Bsdv. (= plota Stkr.) differs from the preceding species in the more distinct brownish canadensis. 
loamy ground-colour, and from chersis especially in a fine dark line in the centre of the tegulae; mesothorax 
loamy grey. Abdomen above with a very strong dorsal line. An apparently rare species from Canada, New 
Foundland, New England, Ohio. Early stages unknown. 
S. francki Neumoeg. (95 b) we can figure from a specimen in the Berlin Museum. Rothschild and Jor- francki. 
dan presume it to be a hybrid between chersis and kalmiae. Kansas. 
S. kalmiae Abb. & Sm. (95 b) is still more brownish than canadensis, much less strewn, and with its kalmiae. 
darkened inner-marginal portion of the forewing it resembles the palaearctic ligustri ; discal longitudinal streaks 
thick. Larva on lilac, privet, Kalmia, Chionanthus, green with distinctly marked black oblique bands and a 
black-granulated horn. Canada to Georgia, to the west as far as the Mississippi. 
S. gordius Or. ( = eremitus Grt., poecila Stpli.) (95 b) is smaller and more robust than kalmiae, forewing gordius. 
more intensely strewn with brown, the inner-marginal area not so contrastingly darkened, more irregularly 
marked. The discal band on the hindwing above and beneath as well as the central spots on the ventral side 
very distinct. — oslari R. & J. is a larger and lighter form, the disc of the forewing less shaded with blackish- oslari. 
brown, the discal band on the hindwing beneath less distinct, the spots on the abdomen beneath very small. 
Colorado. — borealis Clark is a darker and purer grey race from Ontario, Manitoba, Quebec, Maine. Larva of a borealis. 
bright green, head striped yellow and brown, the white oblique bands bordered with red anteriorly, the horn 
only laterally black, green above and below. On apple, ash, rose, Myrica. 
S. luscitiosa Clem. (95 b) is easily recognizable, forewing similar to those of the preceding species, but luscitiosa. 
all the margins darker than the brightened disc. Hind wing yellow with a black marginal band, median band 
