542 ME. A. G. BUTLEE ON THE SPHINGID^. 



5. EnTO ? CIXI»'AMOMEA. 

 Enyo cinnamomea, Herrich-Scliaffer, Samml. auss. Schmett. ii. p. 3, fig. 558 (1869). 

 North Australia. 

 I very much doubt this being a true Enyo. 



Genus 22. Aleuron, Boisduval. 



Aleuron, Boisduval, Lep. Guat. p. 71 (1870). 

 Callenyo, Gvoie (1873). 

 Tylognathus, Felder (1874), ex parte. 



1. Aleuron chloeoptera. 



Sphinx chloroptera, Perty, Del. Anim. Artie. Bras. pi. 31. fig. 3. 

 JLnyo chloroptera, Walker, Lep. Het. viii. p. 118. no. 10 (1856). 

 Aleuron chloroptera, Boisduval, Lep. Guat. p. 71 (1870). 

 Callenyo chloroptera, Grote, Bull. BuE 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. viii. p. 116. no. 8 (1856). 



Tylognathus so-iptor, Felder, Eeise 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. 



Bnyo prominens. Walker, Lep. Het. rai. p. 115. no. 4 (1856). 



Brazil. 



Possibly a variation of the preceding species. 



Genus 23. Tylognathus, Felder, 

 Tylognathus, Felder, Eeise der Nov., Lep. v. (1874). 



1. Tylognathus smerinthoides. 

 Tylognathus smerinthoides, Felder, Eeise der Nov., Lep. iv. tab. 82. fig. 5 (Nov. 1874). 



? 



If the palpi of this species are correctly figured, it has a right to be considered 

 distinct from Aleuron, although in general pattern it nearly approaches A. chloroptera; 

 moreover in the form of the primaries it agrees with Gonenyo cariinata. 



