68 [August 



Haw., Sphinx oclius* Klug, and perhaps others — which will be under- 

 stood from the material I now indicate — a genus appears susceptible of 

 erection, which would contain consonant material, very different from 

 that thrown together under Protoparce, by Prof. Burmeister, and, in a 

 less degree perhaps, from MacrosUa of Mr. Walker and Dr. Clemens. 

 It seems, however, sufficient for the purposes of this Xotice, in con- 

 sideration also of the circumscribed material I have here studied, but 

 to insist on the needed revision, which should be entered into by careful 

 dissectional study, and to state, that, so far as we can judge from au- 

 thors, the species (with the exceptions already noted and adopted under 

 Pseudospliinx and Amphonyx') separated under Macrosila and Proto- 

 parce, appear to differ by an entire exaggerational development, rather 

 than by an ultimate structural divergence, from the more typical Euro- 

 pean forms of Sjihinx. 



Sphinx rustica. 



Sphinx rustica, Fab., Sp Ins. II, 145, 28. (1781.) 

 " " Cram., Pap. Pap. Exot. IV, 21, PI. 301, fig. A. (1782.) 



" " Fab., Mant. Ins. II, 95, 31. (1787.) 



" " Fabr., Ent. Syst. Ill, 1, 366, 33. (1793.) 



" chionanthi, Abbot & Smith, Ins. Georg. I, 67, PL 34. (1797.) 



Acherontia chionanthi, Hiibn., Verz. Schm. 139, 1495. (1816.) 



Cocytius rustica. Hiibn., Verz., Schm. 140, 1498. (1816.) 



" Hiibn., Exot. Sch. Lep. Ill, Pond. 2, fig. 1, 2. (1824.) 



Macrosila rustica, Walk., C. B. M. Part VIII, p. 199. (1856.) 



Frotoparce rustica, Burm., Sph. Braz. p. 7. (1856.) 



Macrosila rustica, Clem., Syn. N. Am. Sph. p. 163. (1859.) 



Sphinx ntstica, H-S., Corr. Blatt, p. 59. (1865.) 



Two specimens, % and 9 . Exp. % 4.50, 9 .5.00 inches. Length of 

 body. % and $ 2.20 inches. 



Habitat. — Cuba, (Poey.) Coll. Ent. Soc. Philad. 

 Number lb Poeyh MSS. Catalogue. 



The specimens do not differ specifically from those that I have exam- 

 ined from different parts of the United States. 



* The synonomy of this species is as follows : 



MACBOSILA, emend, mihi. 

 Macrosila ochus. 



Sphinx ochus, Klug., Neue Schm. Heft. 1, p. 4, Plate 3, fig. 2. (1836.) 

 Macrosila instita, Clem., Syn, X. Am. Sph. p. 164. (1859.) 

 Habitat. — Mexico, (Klug.) Honduras, (Clemens.) 



Curiously enough Mr. Walker does not mention the present species, though 

 quoting Sphinx Typhon, Klug (Philampelus Typhon, Walk.), figured on the 

 same Plate. Dr. Clemens' synonym is doubtless owing to this omission in the 

 British Museum Lists. 



