26 HETEROCERA. 
without the white band on the primaries. But I cannot detect any difference of specific 
importance which would enable me to separate my large series of specimens. Prof. 
Westwood, in his paper on the genus Castnia+, divides the species into three forms; 
but I am unable to do so, having specimens that completely connect them all 
together. Castnia salasia of Boisduval agrees in all respects with this species. I have 
compared the type with a large number of specimens, and cannot detect the slightest 
difference. 
6. Castnia futilis. (Tab. IV. fig. 5.) 
Castnia futilis, Walker, Cat. vii. p. 15817. 
Hab. Nicaragua (Delattré); Costa Rica (Van Patten), Irazu (Rogers); Panama, 
Chiriqui, Veraguas (Arcé, mus. D.), Bugaba, 800 to 1500 feet (Champion). 
This species is very distinct from Castnia atymnus, though Prof. Westwood considers 
it the same in his memoir on this genus, stating that the type in the British Museum 
is only a rubbed and faded specimen of C. atymnus. Having before me a long series of 
specimens in the finest condition, I find that C. futilis differs in many respects from 
C. atymnus, and that it must be retained as a distinct species. A Costa-Rican example 
is figured. 
7. Castnia licus. 
Papilio licus, Faby. Ent. Syst. iii. t. 47°; Drury, Ins. i. t. 16. £. 1, 2; Cramer, iii. t. 223. fA, B*. 
Castnia licus, G. R. Gray, Trans. Ent. Soc. ii. p. 143; Walker, Cat. i. p. 184, vii. p. 1582°; West- 
wood, Trans. Linn. Soe. ser. 2, Zool. i. p. 178°. 
Hab. Ntcaracua, Chontales (EZ. M. Janson, mus. D.); Costa Rica (Van Patten, 
mus. D.).—Ecuapor ° (mus. D.) ; East Perv and Botivia (mus. D.); Gutana, Surinam 23 ; 
TRINIDAD (mus. D.); Amazons, Para‘*®, Santarem (mus. D.), Ega4®; Braz 4 &, 
This species seems to be a scarce insect in Central America. Van Patten only 
obtained a single example from Costa Rica, and some years later Janson sent one from 
Chontales in very poor condition. Both specimens agree well with the southern ones 
before me ; but as yet they are the only examples I have seen from our country. 
8. Castnia inca. 
Castnia inca, Herr-Schaff. Samml. aussereur. Schm. f. 488, 489°; Walk. Cat. i. p. 24°; Hopffer, 
Neue Schmett. Heft ii. t. 4. f.2°; Westwood, Trans. Linn. Soe. ser. 2, Zool. i. p. 171. 
Casinia chtarcha 3, Westwood, loc. cit. p. 176, t. 30. f. 1. 
Hab. Muxico!?*, Cordova (Hége), Valladolid in Yucatan ( Gaumer); GUATEMALA, 
Senahu (Champion) ; Honpuras ?.—VENEZUELA 2, 
All the specimens I have seen agree well with Herrich-Schaffer’s figures. The male 
of Westwood’s C. clitarcha belongs to this species. 
