490 Annals of the Carnegie Museum. 



shade of the ground-color; the markings are identical. The various 

 forms may be worked out by means of the following key:^ 



A. Fore wings with heavy dark subapical band. 



b. Ground-color of wings dull reddish ochraceous. 



C. Julia jiilia Fabricius (typical). 

 (Habitat throughout the American tropics.) 



bb. Ground-color pale vermilion, size smaller C. julia titio Stichel. 



{Habitat from Bolivia to Colombia.) 



B. Fore wings with subapical band reduced to a small spot at the end of cell, or 



entirely absent. 



c. Ground-color dull reddish ochraceous. . .C. julia delila Fabricius (tj-pical). 



{Habitat American tropics passim.) 

 cc. Ground-color shining golden ochraceous. 



d. Fore wings of males without spots, only the nervules fineh^ scaled 



with blackish C. julia delila f. moderata = f. nudeola Stichel. 



{Habitat Jamaica, Cuba.) 

 dd. Fore wung with black spot at end of cell and very narrow black margin 



on both wings C. julia cillene Cramer. 



{Habitat Cuba, Haiti, Isle of Pines, and probably elsewhere in 

 the Antilles.) 



Genus Dione Hiibner. 

 4. Dione vanillae (Linnaeus) var. insularis IMaynard. 



Papilio {Nymphalii) vanillce LinN/EUS, Syst. Nat. (10), 1758, p. 482. 



Stichel has attempted to define the races or subspecies of D. vanillcB 

 in the "Genera Insectorum," but calls attention to the fact that there 

 does not appear to be any fixity of character in the specimens coming 

 from the various regions where the insect is found. By a process of 

 selection it is possible to discriminate a number of different forms, but 

 it seems to the present writer very doubtful whether they deserve to 

 be regarded as local races, inasmuch as practically the same forms 

 occur everywhere, with but few exceptions. 



The insect figured by Clerck in his "Icones," which Stichel regards 

 as typical D. vanillce, is at hand in some numbers from British Guiana, 

 Colombia, Venezuela, Haiti, and Jamaica. But there are also at 

 hand many specimens from the same localities, which do not essentiallj' 

 differ from specimens collected in the Gulf States, Mexico, and the 

 Antilles. We possess one hundred and forty-two specimens taken 

 by Worthington on the various islands of the Bahaman Archipelago, 



* I cannot regard C. lucina Felder as a race of C. julia Fabricius, as is done by 

 Stichel. It seems to me to be a valid species, as species go. 



