232 JOHN B. SMITH. 



Though widely distributed the insect seems nowhere common, 

 probably less because of its absolute rarity, than because the imago 

 does not feed, and is therefore seldom seen on the wing like the more 

 typical forms of the family. The larva has been described by nearly 

 every author since Abbot, and yet the early stages are not fully 

 known. Abbot figures it as ferruginous, but says that it is sometimes 

 green. Harris, Clemens and Morris all seem to have drawn their 

 information from the same source. 



ARCT01¥0TUS Bd. 



Ann. Soc. Eut. Fr. ser. 2, x, 319. 



Plump, robust, vestiture very dense, rather loose and woolley. 

 Tongue obsolete. Palpi thick, short, pilose. Antennte fusiform, 

 stout, serrate, with bunches of rather lengthy bristles on each side 

 in the Z ; in the 9 simply ciliate. Abdomen short, thick, obconic. 

 Thorax stout, without distinct tuftings, but the patagije and collar 

 marked. Legs short, stout, anterior heavily armed at outer side and 

 tip with long curved corneous claws; median and posterior tibise 

 spurred as usual. Primaries slightly acuminate at tip, rather oblique 

 and slightly convex along the outer margin. Secondaries rounded ; 

 the venation seems to present nothing peculiar. 



I regret that lack of material has prevented my making a closer 

 study of this remarkable genus, but there is nothing like it, and it 

 cannot be mistaken. Walker considers it a link between the Bom- 

 byckke and Smerinthince. Butler doubted its belonging to this family 

 at all, while Grote places it near the head of the series. It is less 

 Bombycid than Cressonia, or even Elleina, and I believe furnishes 

 rather an intermediate form between Smerinthus and Pogocolon with 

 most structures of the former. 



A. lucidus Bd., Ann. Soc. Eut. Fr. 2d ser. x, 319; Lep. Cal. 1852, 47, Arcto- 

 notus; Wlk., C. B. M. Lep. Het. viii. 265, Ardonotus ; Clem., J. A. N. Sc. Ph. 

 1859, iv. 188, Ardonotus; Morr.. Syn. 1862, 217, Ardonotus; G. & R., Pr. E. 

 S. Ph. V. 169, Ardonotus ; Grt., Buff. Bull. i. 17; id. ii. 225, Ardonotus ; Bd., 

 Sp. Gen. Lep. Het. i. 293; Edw., Pr. Cal. Ac. Sci. vi. 87 ; Strk., Lep. Rhop. et 

 Het. 113, pi. xiii, fig. 7, Ardonotus ; Butl., Tr. Zool. Soc. Lond. ix. 627, 

 Ardonotus. 



Head, palpi, antennse, thorax and abdomen, yellowish olive. Tborax, with 

 the tegulse a little darker and edged narrowly with white. Abdomen with a 

 small anal tuft ; anterior wings yellowish olive, with a darker median band, not 

 reaching the inner margin, and surrounded by an oblique, rich purple border 

 along the interior margin, and obsolete before reaching the costa. This border 



