Euploeines forming Mimetic Groups 27 



1'impression matte. Elle se trouve dans les ties Mariannes. Nous en 

 avons aussi recu des examplaires de Taiti et de Tonga-tabau." 



It is clear that Boisduval confounded helcita with eleutho, although 

 he had seen the original specimens of Freycinet and labelled the type 

 eleutho, probably giving the name for Quoy to describe. 



In 1866, Butler in the Proc. Zool. Soc, p. 300, correctly identifies 

 eleutho, but in succeeding papers he confounds it with helcita. 



Moore, in his monograph of the Euploeinae in the Proc. Zool. Soc, 

 1883, correctly identifies eleutho, and places it in his group with one 

 sexual mark on the fore wing. He however gives Samoa and the 

 Ellice Islands as additional habitats, for specimens in the B.M. He 

 again evidently took these specimens of helcita for ? ? of eleutho. 



Finally, on the publication of the Euploeinae in Seitz's Macro- 

 lepidoptera in 1910, vol. ix, Fruhstorfer distinguishes between eleutho 

 and helcita in their different habitats, and correctly defines the species. 



The type of eleutho is in the Paris Museum, and through' the 

 kindness of my friend Monsieur F. Le Cerf, I have recently been able 

 to examine it, and to look up the rare work of Freycinet in which the 

 species is figured and described. 



Two specimens are labelled as types, one with the ticket " Guam " 

 and the other with " Taiti." The Guam specimen must be regarded as 

 the holotype, as no mention of Tahiti is made in Freycinet and this 

 locality is probably erroneous. 



Besides the types, the Paris Museum contains a series of twenty- 

 five 3 S and one ? , all collected in 1887-1888 by Alfred Marche, on 

 the Islands of Guam, Saypan, Eota and Umata. There is also one ? 

 without locality, from the collection of Lacordaire. The series is very 

 constant, and the ? only differs from the $ in the absence of the 

 stripe of androconia. 



Through the kindness of Monsieur Le Cerf, we are able to figure on 

 pi. IIIb a S of eleutho from Rota. 



As illustrating the extraordinary resemblance between this species 

 and helcita Bdv., we figure on plate IIIb two females, one of eleutho 

 sacerdos Butl. (fig. 4) from Letti Island near Timor, and one of helcita 

 walkeri, Druce (fig. 5), from Tonga. 



Eleutho is characterized by the outer edge of the discal spot in 3 

 being straighter and more sharply-defined and the second discal spot 

 proximally lengthened. We can see no other constant difference 

 between this and helcita. 



It seems probable that these supposed species may be one and the 



