354 Lepidopterological Contributions. 



coloration, suggests affinities with the Smerinthini, a resem- 

 blance which is heightened by its antennal structure and that of 

 its labial palpi. The species hitherto so often mistaken for 

 Drury's S. brontes, and which we believe w T as first described 

 by Dr. Clemens as Ceratomia rerpentinus, here follows natu- 

 rally. We have proposed to retain the name Daremma, Walk., 

 for this species, but the use of this generic name is not free 

 from objection. The genera: — Syzygia, G. da R. (afflicta) ; 

 Diludia, G. <& R. (jasmincarum, G c& R., (Sphinx jasmin. Bd.) 

 brontes, florestan, collaris) ; Pseudosphinx, Burm. (tetrio) ; 

 Amphonyx, Poey (antaeus, duponchel, hydaspes) ; Macrosila, 

 Boisd. (rustica, ochus, aper, Carolina, 5-maculata, cingulata 

 convolvuli) ; Sphinx, Linn, (ligustri, chersis, drupiferarum, 

 kalmiae, etc.) — then follow, and form what seems to us, with 

 our present material, the most natural arrangement of the 

 genera. 



Objection having been made to the etymology of the generic 

 name Erinnyis, JIubner (1816), we find that, independent of 

 the propriety of avoiding any change in its form as written by 

 Hiibner, there is a valid Hesperiid genus erected by Schrank 

 ten years previously, which bears what is evidently the same 

 name. Under these circumstances, it being removed from 

 Schrank's genus Erynnis, by too slight a variation, the term 

 proposed by Burmeister — Dilophonota — must be retained for 

 the genus. Not only is this term full as early (1856) as An- 

 ceryx, Boisd., but it is used by its describer in a perfectly syno- 

 nymous sense with Erinnyis, Iluoner, being proposed for the 

 same species, whereas Boisduval's term, used first by Walker 

 in the British Museum Lists, embraces species which are not 

 properly included with the type of Hiibner's genus. In chang- 

 ing the oldest generic name we necessarily take that which was 

 used to express the same structural idea, particularly when, as 

 in the present case, we are unencumbered by questions of 

 priority. 



The species of the genus Dilophonota, are exclusively Ameri- 

 can, and are as follows : 



