24 Psyche [March-June 
The length of the suprazonal portion is very steady at just 
above 0.5; the subzonal one is more variable; it reaches 0.44 
in most individuals from Jamaica and Mexico, as well as in one 
Californian specimen and in the only Colombian one. The falx 
and uncus lobe reach their maximum in one specimen from Cuba 
(Vinales) as well as in those from Florida and in the very large 
(length of forewing 13.2 mm.) specimen from Vancouver Is- 
land. 1 The valve is rather variable in size, as well as in the 
length/breadth ratio. The narrowest come from Jamaica, Cuba, 
and the S. E. States, the broadest from Haiti and Mexico (to- 
gether with average individuals). The curious bloated appear- 
ance of some of the shorter Central American specimens (see 
pi. 4, CE. Mex., CE.C.R.) is due to the lower margin being 
strongly convex and there is also a certain fattening of the 
rostellum. 
In result of the separation of ceraunus from hanno (see next 
species) a revision of the wing-characters of several races will 
be necessary, either because they have been described as sepa- 
rate species or because authors assigned them to the wrong 
species and thus did not compare them to the typical race of the 
right one. Incidentally, attention should be drawn to the fact 
that the retention of strong pigment not only in the Cu t prae- 
terminal mark but also in the M 3 one is a phenomenon that 
occurs, completely and incompletely, racially and individually, 
both in ceraunus and hanno (besides being typical in ramon ), 
and no subspecies can be based on this character alone , since it 
can be developed in two different races of the same or different 
species. 
Hemiargus hanno Stoll 
(figs. HA, pi. 4; HAN, pi. 7) 
Material: sixteen males and one female (all in the Mus. 
Comp. Zool. coll., except prep. 601), as follows: hanno hanno 
Stoll, neotype, prep. 601, “Paramaribo, Surinam, 18-IV-1927,” 
ex coll. Cornell Univ., Am. Mus. Nat. Hist.; hanno hanno prox ., 
prep. 576, “Rio, Brazil, 1-1875”; prep. 577 “Sao Paulo, Brazil, 
^^The occurrence of this species anywhere north of Arizona or the Carolinas 
(and even there the colonies would probably die out if not regularly replenished 
by the offspring of new arrivals) is due to direct spring immigration from the 
south in suitable seasons, which in its turn produces a more or less nomadic 
summer generation or generations. The same refers to isola. 
