542 MR. A. G. BUTLER ON THE SPHINGID. 
5. Enyo? ciINNAMOMEA. 
Enyo cinnamomea, Herrich-Schiffer, Samml. auss. Schmett. ii. p. 3, fig. 558 (1869) . 
North Australia. 
I very much doubt this being a true Enyo. 
Genus 22. ALEuRON, Boisduyal. 
Aleuron, Boisduval, Lép. Guat. p. 71 (1870). 
Callenyo, Grote (1873). 
Tylognathus, Felder (1874), ex parte. 
1. ALEURON CHLOROPTERA. 
Sphinx chloroptera, Perty, Del. Anim. Artic. Bras. pl. 31. fig. 3. 
Enyo chloroptera, Walker, Lep. Het. viii. p. 118. no. 10 (1856). 
Aleuron chloroptera, Boisduval, Lép. Guat. p. 71 (1870). 
Callenyo chloroptera, Grote, Bull. Buff. Soc, Nat. Sci. i. p. 279 (1873). 
Honduras. B.M. 
The form of the palpi at once separates the above species from Enyo. 
2. ALEURON IPHIS. 
Enyo iphis, Walker, Lep. Het. vii. p. 116. no. 8 (1856). 
Tylognathus scriptor, Felder, Reise der Nov., Lep. iv. tab, 82. fig. 4 (1874). 
Brazil (Stevens). Type, B.M. 
This differs a little from the type of the genus in the outline of the primaries. 
3. ALEURON PROMINENS. 
Enyo prominens, Walker, Lep. Het. viii. p. 115. no, 4 (1856). 
Brazil. 
Possibly a variation of the preceding species. 
Genus 23. TyLocnatuus, Felder, 
Tylognathus, Felder, Reise der Nov., Lep, v. (1874). 
1. TYLOGNATHUS SMERINTHOIDES. 
Tylognathus smerinthoides, Felder, Reise der Nov., Lep. iv. tab. 82. fig. 5 (Nov. 1874). 
Sit! 
If the palpi of this species are correctly figured, it has a right to be considered 
distinct from Alewron, although in general pattern it nearly approaches A. chloroptera; — 
moreover in the form of the primaries it agrees with Gonenyo carinata. 
