LEPIDOPTERA heterocera. 
255 
Group 7. 
Structure of S. Tiliee. 
19. Smerinthus decolor. 
Rufo-testaceus, subtus pallidior ; alee anticce pallide rufescente 
cinerece , f asciis nonnullis angustis undulatis obscurioribus 
non bene determinatis ; posticce pallide rufee. 
Reddish testaceous, paler beneath. Fore wings pale reddish 
gray, with some slender indistinct undulating darker bands. Hind 
wings pale red. Length of the body 18 lines ; of tbe wings 28 
lines. 
Hindostan. In Mr. Saunders’ collection. 
The following species may form a new genus, and perhaps 
is allied to Calliomma. 
20. Smerinthus? Apulus. 
Mas. Rufus; abdomen nigro fasciatum ; antennee subpectinatee ; 
alee angustce , cervino marginatce ; anticce apice truncato in- 
cisce , gutta basali fasciisque duabus undulatis nigris , lituris 
duabus discalibus auratis ; posticce albce. 
Sphinx Apulus, Cram. Pap. Exot. i. 8, pi. 88, f. E. Fabr. Sp. Ins. 
ii. 142, 12; Mant. Ins. ii. 93, 13; Ent. Syst. iii. 1, 360, 14. 
Gmel. ed. Syst. Nat. i. 5, 2374, 55. 
Colax Apulus, Hiibn. Verz. Schmett . 141, 1513. 
Surinam. 
Country unknown. 
Group of S. Populi. 
21. Smerinthus princeps. 
Canescens ; antennee albidee ; thorax vitta lata cervina ; abdomen 
cervinum ; alee anticce gutta discali albida , f asciis duabus 
lineisque tribus transversis undulatis fuscescentibus ; posticce 
roseee , margine pallide fusco , apud angulum interiorern glau- 
cescentes striga nigra. 
Colour somewhat hoary. Antennae whitish. Thorax with a 
broad fawn-coloured stripe. Abdomen fawn-colour. Fore wings 
with two bands and three transverse undulating lines of a brownish 
z 2 
