LEPTDOPTERA HETEKOCERA. 199 



North America. 



The two following species belong to distinct groups of the 

 genus. 



1. Mackosila Brontes? 



Cinerea ; antennce albce ; thorax nigro marginatus, lateribus albis ; 

 abdomen linea media vittisque duabus lateralibus angulatis 

 ■ nigris ; alee antica? gutta discali alba, lineis transversis angu- 

 losis interioribus fuscis exterioribus nigris, fascia exteriore 

 indeterminata vittaque postica albidis nonnunquam obsoletis, 

 strigis exterioribus nigris ; posticce fuscescentes, vittis tribus 

 nigricantibus. 



Sphinx Brontes, Drury, III. Exot. Ins. ii. 52, pi. 29, f. 3. 



The insect here described differs much from Drury's figure, and 

 may be a distinct species. 



a. United States Presented by E. Doubleday, Esq. 



b. North America. Presented by H. Jones, Esq. 



2. MACROSILA EUST1CA. 



Nigro-fusca aut ferrugineo-fusca, albo varia, sub tus alba ; abdo- 

 men maculis sex lateralibus luteis ; alee antica fasciis duabus 

 latis diffusis excisis albis lutescente variis, gutta discali alba; 

 posticce nigrofuscai, maculis basalibus et posticis guttisque 

 ciliaribus albis. 



, Merian, Ins. Surin. pi. 5. Sulz. Hist. Ins. pi. 20, 



f. 2. 

 Sphinx rustica, Cram. Pap. Exot. iv. 21, pi. 301, f. A. Fabr. Sp. 



Ins. ii. 145, 28 ; Mant. Ins. ii. 95, 3i ; Ent. Syst. iii. 1, 366, 



33. Gmel. ed. Syst. Nat. i. 5, 2385, 93. Anon, Ins. Surin. 



225, pi. 101. 

 Acherontia Chionanthi, H'ubn. Verz. Schnett. 139, 1495. 

 Sphinx Chionanthi, Abbot fy Smith, Nat. Hist. lep. Ins. Georg. 



i. 67, pi. 34. Duncan, Nat. Libr. xxxvii. 100, pi. 5, f . 2 ; pi. 



6, f. 2. 

 Cocytius rustica, H'ubn. Exot. Schmett. Lep. iii. Leg. iv. Mand. A. 



Pond. 2, f. 1, 2 ; Verz. Schmett. 140, 1498. 



Surinam. 



