LEPIDOPTERA HETEROCERA. 
249 
the third than from the first; third much nearer to the second than 
to the fourth. Hind wings slightly denticulated, partly emargi- 
nated. 
11. Smerinthcs Grayii. 
Mas. Pallide cinereus ; alee anticce lineis alternis obliquis rectis 
et undulosis plagisque duabus (una subquadrata interiore , 
altera elongata exteriore) fuscis , gutta basali nigra guttaque 
discali albula ; alee posticce lineis duabus fuscescentibus, ma- 
culaque apud angulum interiorem album obscure fusca. 
Smerinthus Grayii, Boisd. MSS. 
Male. Pale cinereous. Antennae whitish, with testaceous 
branches. Fore wings with alternate straight and undulating ob- 
lique brown lines, with two more distinct brown patches, one 
subquadrate on the interior border, the other elongate on the exte- 
rior border; a black dot near the base, and a whitish discal dot. 
Hind wings with two indistinct brownish lines, which are nearly 
parallel to the exterior border ; a dark brown spot by the interior 
angle, which is white ; cilise white between the veins. Length of 
the body 13 lines; of the wings 34 lines. 
a. Port Natal. From M. Guienzius’ collection. 
Asia. 
Group 1. 
Corpus crassum. Caput breve, vix conicum. Proboscis dis- 
tincta, brevissima. Palpi acuti, longiusculi, caput paullo superantes. 
Antennae serratae, setaceae, thorace non longiores. Thorax bicrista- 
tus. Abdomen thorace non duplo longins. Pedes validi, brevius- 
culi, tibiis quatuor longis. Alae longae, latae; anticae apud costam 
vix convexae, apice subrotundatae, margine exteriore sat obliquo 
valde denticulato ; posticae apice rotundatae, margine exteriore sub- 
denticulato. 
Male. Body thick. Head short, hardly conical. Proboscis 
distinct, very short. Palpi acute, extending a little beyond the 
head, rather longer than usual. Antennae serrated, setaceous, not 
longer than the thorax. Thorax with crests on each side. Abdo- 
men tapering, less than twice the length of the thorax. Legs 
stout, rather short; hind tibiae with four long spurs. Wings long, 
broad. Fore wings very slightly convex in front, somewhat rounded 
at the tips, rather oblique and much denticulated along the exterior 
