28 HETEROCERA. 
13. Castnia zagrea. (Tab. IV. figg. 1, 2.) 
Castnia zagrea, Felder, Reise d. Novara, Zool. B. ii. t. 79. f. 2'; Westwood, Trans. Linn. Soc. ser. 2, 
Zool. i. p. 189°. 
Gazera zagrea, Boisduval, Sp. Gén. des Lép.-Hét. p. 548. 
Hab. Centran America (Salvin, mus. Felder)1; Panama?, Chiriqui (Ribbe, mus. 
Staudinger); Bugaba 800 to 1500 feet, Boqueron 1000 feet (Champion). 
This fine species resembles Papzlio ascolius, Felder, in its general coloration. ‘The 
specimens figured, I believe to be sexes; but only having two examples, I am unable 
to determine this point with absolute certainty. Dr. Staudinger’s specimen is a female, 
and agrees well in all respects with Dr. Felder’s figure. 
14. Castnia salvina. 
Castniu salvina, Westwood, Trans. Linn. Soc. ser. 2, Zool. i. p. 190, t. 82. f. 1’. 
Hab. Panama, Veraguas (Salvin, mus. Oxf.) 
This species is very closely allied to C. colombina, Boisd., the only difference being 
the black margin of the secondaries. The only specimen known to me is the type in 
the Oxford Museum: 
15. Castnia linus. 
Papilio linus, Cram. Pap. Exot. iii. t. 257. f. A’. 
Castnia linus, Walk. Cat. i. p. 82’. 
Castnia heliconioides, Herr-Schaff. Samml. aussereur. Schm. t. 4. f. 15°; Westwood, Trans. Linn. 
Soc. ser. 2, Zool. i. p. 192 *. 
Gazera linus, Boisd. Sp. Gén. des Lép.-Hét. p. 544°. 
Hab. Guatema.a ?.—CotomeBia (mus. D.); Ecuapor (mus. D.); Guiana, Surinam !; 
Amazons, Santarem (mus. D.); NortH Braziu? 4 (mus. D.). 
My only authority for including Castnia linus in our fauna is the specimen in the 
British Museum, said to be from Guatemala. As it is a southern species, I feel doubt- 
ful if it should be admitted without further confirmation of its occurrence within our 
limits. 
Fam, HGERIIDA. 
This family has received very varied treatment of late years, having been shifted about 
from place to place by various authors, and has not as yet found, so far as I can see, 
any position better suited for it than immediately preceding the Zygeenide, following 
after the Sphingide. To some extent I agree with Mr. Butler that in many respects 
the A‘geriide appear to be allied to the Pyralide, but in others they most certainly are 
not. The flight of these moths is very different, that of the former being very rapid, and 
in many of the species resembling that of the Sphingide. They generally fly in the 
hottest sunshine, whereas the Pyralide are almost exclusively evening and night fliers. 
