LEPIDOPTERA HETEROCERA. 
99 
obliquae, incisuris duabus bene determ inatis, margine interiore un- 
dulato ; posticas margine exteriore denticulato. 
Thyreus, Swainson , Zool. Illustr. Harris , Amer. Journ. Sci. 
xxxvi. 
Sphinx, p., Fabr. ; Gmel. 
Amphion, Hubn. Verz. Schmett. 134. 
Body very broad. Head obtuse in front. Proboscis long. 
Palpi short and thick. Antennae setaceous, much longer than the 
thorax. Abdomen about twice the length of the thorax. Legs 
rather slender ; hind tibiae with four moderately long spurs. Wings 
narrow. Fore wings straight in front, truncate at the tips, very ob- 
lique, and with two deep notches along the exterior border ; interior 
border undulating; fourth inferior vein very remote from the third. 
Hind wings denticulate along the exterior border. 
1. Thyreus Abbotii. 
Ferrugineo-fuscus ; corpus subcinerascens , subfasciatum ; antennce 
testacece ; alee strigis obliquis nigricantibus , posticce dimidio 
antico fiavo . 
Thyreus Abbotii, Swainson , Zool. Illustr . i. pi. 60. Harris, Amer. 
Journ. Sci. xxxvi. 
a , b. New York. Presented by E. Doubleday, Esq. 
c. Georgia. From Mr. Abbot’s collection. 
2. Thyreus Nessus. 
Ferrugineo-fuscus, subtus rufo-lutescens ; thorax vittis duabus late « 
ralibus anticis pallidis ; abdomen f asciis duabus angustis 
pallide fiavis ; alee ciliis ex parte pallide flavis, anticce sub - 
cinerea, fasciis variis obliquis nigricantibus, macula costali 
subapicali rufa; posticce obscuriores , vitta obliqua rufa . 
Sphinx Nessus, Cram. Pap. Exot. ii. 9, pi. 107, f. D. Fabr. Sp. 
Ins. ii. 140, 2; Mant. Ins . ii. 92, 2; Ent. Syst . iii. 1,355, 2. 
Gmel. ed. Syst. Nat. i. 5, 2372, 91. 
Amphion Nessus, Hubn. Verz. Schmett. 135, 1444. 
Thyreus? Nessus, Harris , Amer. Journ. Sci. xxxvi. 
a. Trenton Falls, New York. Presented by E. Doubleday, Esq. 
b. Orilla, West Canada. From Mr. Bush’s collection. 
K 2 
