17 



near the external edge, which last forms, on each nerve, a small black speck like an arrow head. Between 

 the two lines is a black spot near the anterior edge. The posterior wings have a similar line running 

 cross them, from the anterior to the interior edges, in a circular manner, and, meeting a little above the 

 extremity of the abdomen, with a black spot in each near the middle. 



Under Side. Is similar to the upper, only the black spots are more conspicuous. 



CERATOCAMPA IMPERIALIS. 



Plate IX. fig. 1. 2. 



Order; Lepidoptera. Section: Noctiinia. Family: Bombycirloe, S'ic/jA- 



Genus. Ceratocampa, Harris, Append, to Hitchcock's Geology of Massachusets. Cerocarapa, Kirhij ^- Spence, 



Ind. Introd. to Ent. Odouestis, Gennar. Stephe7is. Lasiocampa, Latr. Schrcmh. Bombyx, Fabr. 

 Ceratocampa Imperialis. Alis flavis, fusco irroratis et variegatis, omnibus iufra maculii discoidali subocellari 



fusca. (Expans. Alar. 4 unc. lin. ^. — (i unc. J .) 



Sl'N. Phalaena (Attacus) Imperialis, Dmry, App. v. 2. 



Bombyx Imperialis. Fabr. Ent. Syst. 111. 1. p. 435. No. 89. Gmel. Lin. S. N. 2417. 510. 

 Phaleena Imperatoria, Abbot and Smith, Ins. Georgia, tab. 55. OKv. Enc. Meth. 5. 56. 116. 

 Bombyx Didyma, Pal. Bauv. Ins. Lep. pi. 20 



Habitat ; New York (DrurijJ. India (^Fabricius). 



Upper Side. The antenna; are of a reddish colour, bi'oad and pectinated, and, near the extremities, 

 appear as if they were stripped of their comb-like appendages. The thorax and abdomen yellow, clouded 

 with a light reddish-brown colour, inclining to crimson. The anterior wings are of a fine bright yellow, 

 with several clouds on them of the same brown colour, whereof one takes its rise at the tips, and runs 

 along the external edge to the lower corners, being narrower at the extremities than the middle, where 

 it branches off, and unites to a large cloud near the shoulders. The yellow parts of all the wings appear 

 as if sprinkled with dark irregular specks. The posterior wings are of the same bright yellow as the 

 anterior, and have, in the middle of each, a small brown eye, with a lighter spot in its centre. An irre- 

 gular bar of the same reddish brown colour crosses these wings, which, beginning at the outer angle, 

 meets at the anal angle. The edges of all the wings are plain. 



Under Side. The thorax and abdomen are yellow. All the wings are of the same yellow colour, and 

 sprinkled with brown as on the upper side. The superior wings have on each a light redcUsh brown eye 

 near the middle, with a light spot in the centre, and a round brown spot above it. The anterior margins 

 next the body are of a reddish brown ; and the same cloud that appears along the external edge of each 

 wing on the upper side, appears also on this, but fainter. The inferior wings have a reddish brown eye 

 in each near the middle, with a lighter spot in the centre, and of the same size as on the upper side. 



The figure here given, is taken from the male ; the female being much larger, expanding full six 

 inches ; the antennae being thread-like, and not combed or pectinated as the male. 



This species breeds twice in the year, namely in June and September. The cater- 

 pillar, according to Abbot, feeds on the plane-tree (Platanus occidentalis Linn.), oak, 

 liquidambar, and pine trees. Some of them are of a tawny colour, others tawny and 

 orange, others green. They are furnished with long rigid hairs, and the second and 

 third segments of the body are also armed with two pair of short, erect, rugose horns. 



I D 



