| 
. 
SS eS ee ee eS. Oe — =. 
2 LEPIDOPTERA. 
be distinguished; and Acentropus has been placed in this order 
by Westwood (Introd. to Mod. Classif. of Insects, vol. ii. p. 412), 
and by Kolenati (Genera et Species Trichopterorum, p. 6), who 
had himself taken forty specimens of the insect; it is possible that 
future investigation, and the discovery of the primary states of 
this insect, may show that their views of its affinities are well 
founded. The Homopterous Aleyrodes proleteila was described 
by Linneus as a Zinea, but the resemblance of the perfect insect 
is very superficial. The resemblance of the Dipterous genus 
Psychoda would appear to mislead some entomologists, Professor 
Zeller having had specimens sent him to name as species of the 
Psychida. 
The two main divisions of the Lepidoptera are :— 
IT. With the apex of the antennee thickened . . RHOPALOCERA. 
II. With the apex of the antennee not thickened Hnrrrocnra. 
I. RHOPALOCHRA, Duméril, Boisduval. 
Diurna, Latreille. 
Antenne apice incrassato, articulis mediis elongatis. 
Ale in quiete erecta, posteriores sine retinaculo. 
Prothorax sine collari. 
Antenne with the apex incrassated (a few exceptions occur among the 
Morphida) ; the middle joints elongated. Wings in repose erect (Hes- 
peria malvarum and Tages sleep with the wings decumbent) ; the pos- 
terior without a bristle. Prothoraw without a collar (in the Hesperide 
there is a slight development of a collar). 
II. HETEROCERA, Boisduval. 
Antenne setacee vel fusiformes, apice attenuato. 
Ala in quiete plane, posteriores cum retinaculo vel sine eo. 
Prothorax collari tectus. 
Antenne setaceous, or fusiform with the apex attenuated (Castnia forms 
an exception, and was therefore placed by early writers among the 
diurnal Lepidoptera ; the development of the collar, and the bristle of 
the posterior wing, show that if belongs to the Helerocera) ; wings in 
7 
