106 EHOPALOCEEA. 



L. cassius is an exceedingly common species throughout the whole of Tropical 

 America, from the Tres Marias Islands in the north to South Brazil, including also many 

 of the West Indian Islands. Throughout this wide area some variation is to be expected ; 

 this affects the amount of white on the secondaries of the males, and to some extent 

 the markings of the females generally ; but we are quite unable to associate any parti- 

 cular variation to any restricted area, for in cases where we have a large series from any 

 one locality the extremes of variation are represented. We draw these conclusions 

 from the examination of about 120 specimens. 



In Central America the range in altitude of this species is considerable, for we find 

 it at the sea-level in the Tres Marias Islands, and as high as 5000 feet near the city 

 of Guatemala. 



8. Lycsena marina. 



Lyccena marina, Reak. Proc. Ac. Phil. 1868, p. 87 \ 

 Leptotes marina, Scudd. Bull. Buff. Soc. Nat. Sc. iii. p. 124*. 



£ mari praecedentis sirailis, sed alis supra magis violaceis : subtus lineis fuscis transversis latioribus. 

 2 baud albo notata. 



Hab. North America, California, Arizona. — Mexico, Northern Sonora (Morrison), 

 Milpas (Forrer), Jalapa (W. Schaus), Orizaba (fide ReaJcirt 1 ), Vera Cruz (W. H. 

 Edwards l ) ; Guatemala, Duenas (F. D. G. & 0. S. t Champion), San Geronimo 

 (F. D. G. & 0. S.). 



A close ally of L. cassius, from which it appears to be distinguishable in both sexes 

 by the darker colour of the upper surface of the wings, in which there is no tendency 

 to become white as in the allied species. There are slight differences also on the 

 underside. L. marina appears to be common along our north-western frontier, both 

 in Arizona and Sonora ; thence it spreads through Mexico to the highlands of Guate- 

 mala, where both Mr. Champion and we ourselves found it an elevation of nearly 

 5000 feet at Duenas, and as low as 3000 feet at San Geronimo in Vera Paz ; in both 

 these places L. cassius is also found. 



We also notice a difference in the secondary male organs, which make it certain that 

 L. cassius and L. marina are distinct species. The harpagones in the former have 

 simple rounded ends with long hairs, and on the inner edge a strong prominent tooth ; 

 those of the latter have a serrate extremity, and there is no tooth on the inner edge ; 

 moreover, the projection or hook on either side of the tegumen is strongly dentate on 

 its lower edge. 



9. Lycsena hanno. 



Papilio hanno, Stoll, Suppl. Cram. Ex. Pap. p. 170, t. 39. ff. 2, 2 B \ 

 Rusticus adolescens hanno, Hubn. Samml. ex. Sehmett. ii. t. 98 2 . 



Alis purpureo-caeruleis, marginibus externis fusco nigricantibus, ciliis albis : subtus fusoo-griseis, marginibus 



