22- NOVITATES ZOOLOGICAE XXVI. 1919. 



Castnia (Cyanostola) diva chiriciuensis Strand 



Castnia diva chiriquensia Strand, in Seitz, Grossschmett. Erde, vol. 6. p. 13 (1913) (Chiriqui). 



2 ^(J Bogava, Chiriqui, 800 ft. (Watson). 



Castnia (Cyanostola) diva tricolor Feld. 



Castnia triculor Felder, Rcise Novara, Lipid, iv. pi. 79. f. 3 (1874) (Bogota). 



The Tring Museum has 9 specimens including the "type," all ?$: 

 4 $? Bogota ; 1 ? Bogota (Lindig. ex coll. Felder) (type) ; 4 ?? ?. 



Castnia (Haemonides) cronis (Cram.) 



Papilio cronis Cramer, Pap. Exol. vol. ii. part xt. p. 125. pi. clxxviii. fig. A (1777) (Surinam). 



Messrs. Houlbert and Oberthiir maintain that Cramer's figure is all that is 

 luiown of true cronis and all other black and white Castnias of the genus 

 Haemonides Hiibner are distinct species. There are so few of these handsome 

 insects available for examination that I should not like to express a definite 

 opinion on the subject, but at all events the Tring Museum possesses 2 (J (J of the 

 true cronis : 



1 <J St. Paulo de 01iven9a, Upper Amazons, August 1906 (M. de Mathan) ; 

 1 (J Cacuta, Venezuela. 



Castnia (Haemonides) cronis comingii H. Edwds. 



Castnia corningii Henry Edwards, Insect Life, vol. iii. p. 316. fig. 29 (1891) (Oaxaca, Mexico). 



This form is at once recognisable by its dark buff hindwings. 



1 cJ?. 



Castnia (Haemonides) strandi Houlb. 



Castnia strandi Houlbert, Etud. Lipid. Comp. fasc. xiii. p. 75 (1917) (Cayenne). 



I am keeping this separate as a species for the present on account of the 

 heavy black bar on the hindwmgs below, which is entirely absent both in my 

 two cronis and my soUtary corningii. 



1 (J St. Laurent de Maroni, Cayenne, July 1905 (Le Moult) ; 1 ? Amazon 

 (Bates, ex coll. Felder). 



Castnia (Haemonides) cronida Herr.-Schaeff. 



Castnia cronida Herrich-Schaeffer, Satnml. ausscur. Schmett. p. 56. pi. 57. fig. 142 (1850— 1S69). 



This fine species appears to be exceedingly rare. 



1 6 Arouany, July 10th, 1881. 



Castnia (Herrichia) aeraeoides Gray. 



Castnia aeraeoides G. R. Gray, in Griffith, Anim. Kingd. v. pi. 53. fig. 4 (1832) (BrazU). 

 Tring Museum possesses 10 specimens : 



2 <J(J Petropolis ; 1 $ Rio de Janeiro ; 2 ?? ? ; 3 <?<?, 1 $ ? (ex coll. Felder) ; 

 I ? labelled " ex larva, Dez. 1892 " and cocoon and pupa case ; this specimen 

 differs much from the remaining 9 ; the forewings are more uniform, the light 

 markings being very much reduced ; the hindwings are duller in colour, and 

 their black margin becomes very narrow below vein 5. 



