46 
Psyche 
[June-Sept. 
geographical correlation, except insofar as certain popula- 
tions seem to be more uniform than others ( e.g ., the 
Bahamas). Very dissimilar specimens from the same re- 
gion show identical structure in the male genitalia, but 
there seems to be some, though slight, geographically cor- 
related variation in these organs. The genitalia of the 
Cuban K. cabrerai have not been examined, but the form 
seems to be distinct. With this exception it seems to me 
that, pending adequate material from all regions for com- 
parative study, the best course is to treat the entire complex 
under the oldest name (Papilio castalia Fabricius, 1793, 
Entom. Syst., 3, 1, p. 188, presumably from Jamaica), and 
to describe the variation shown by different populations in 
terms as general as possible. 
In the Hispaniolan series there are two types of males : 
A, with the wings immaculate whitish above, except for 
the orange area at the base of the forewing, and a light 
longitudinal streak on the under side of the hindwing; 
B, similar above except for a black postmedian bar on the 
costa of the hindwing, but with the underside of the hind- 
wing uniform light yellow except for a shadow of the black 
bar of the upper side. 
These two types show no intergrades; three specimens 
belong to type A, the remaining eighteen to type B. We 
have specimens like type A from Arizona, Nicaragua and 
Jamaica; like type B from Arizona. These might be con- 
sidered as “incipient species” but the genitalia of A and B 
from Hispaniola seem to be identical and slightly different 
from the genitalia of A and B from Arizona ! 
Three types of females occur on Hispaniola : 
C, above entirely lemon yellow, slightly darker at the 
base of the forewing; similar below, but with a prominent 
light longitudinal streak (really a fold) on the hindwing, 
and a faint silvery reticulation on this wing (1 specimen, 
Saona Is.) ; 
D, chalky white above, darker on the base of the fore- 
wing; similar below, but bright yellow on the base of the 
forewing, the ground color of the hindwing and the apex 
of the forewing slightly yellowish, the fold of the hindwing 
prominent but not marked with contrasting scales (5 
specimens) ; 
