66 JOHN B. SMITH. 



Stygia. — Anteniue eylindric-clavate, curved, without scaly tuft at 

 tip; beneath with a double row of latnellte or teeth. Palpi clavate. 

 Tongue wanting or very short. 



Siygla amtralls from southern France. 



Laspeyres' restriction of the term Sesia is followed, and the species 

 not congeneric with apiformls are replaced in Sphinx, Scopoli's genus 

 being evidently overlooked, since it is not mentioned at all. In the 

 Gen. Crust, at Ins. it is used though Latreille considers it not gene- 

 rically different from Sphinx. No other changes were made by La- 

 treille from this classification. 



In 1807, in the sixth volume of lUiger's Magazine, p. 279-289, 

 appears an extract from " Fahricii Sysievia Glossatorimi." The au- 

 thor of the translation says : " Bei dem Interesse, dass dieser Gegen- 

 stand gerade gegenwartig hat, benutze ich die giinstige Gelegenheit, 

 diese Gattungen zur Erkenntniss des entomologischen Publikums zu 

 bungen, da der eriste Band jenes Systema Glomttorum vor Ostern 

 nicht ersheinen kann." 



As a matter of fact the work was never published, and the Fab- 

 rician genera rest on this extract, which embraces the Rhopalocera, 

 and the Heterocera to the Zygmnidxe. 



The following is a translation of the paper so far as the Heterocera 

 are concerned : 



Laothoe — Palpi two, rough, very obtuse, two-jointed. Tongue 

 very short, membranous, almost indistinct. Antenna setaceous; 

 joints scaly beneath. 



Types — Sp)h. ocellata, quercus, tibice, populi, etc. 



This genus is therefore perfectly synonymous with the Latreillian 

 genus Smerinthns. 



Sphinx.— Palpi thick, rough, very obtuse, two-jointed. Antennie 

 setaceous ; joints beneath scaly. 



Wings dentate. 

 Sph. ello, tetrio. 



Wings entire. 



Sph. nerii, atropos, euphorbi<e, ligudri, et al. 

 Sesia : Palpi two, short, thick, rough, obtuse, two-jointed. Antennje 

 thicker outwardly, with a small hook at tip. 



Wings scalloped. 

 Sp. cenothera. 



Wings entire. 



S. siellatarmn, fuciformis, etc. 



