is APIS. 43 



tapaja ; in which case the type of the species will be the insect 

 procured by Saunders from the Tapajos, with a red patch on the 

 hind-wings; and the specimen without this patch, which he 

 calls a variety, must be regarded as distinct. Bates gives the 

 additional locality of Ega ; and Dr. Staudinger has figured a 

 female from Teffe, which is the name of the river on which Ega 

 stands. From its larger size I suspect that it will prove to be the 

 female of a distinct species, corresponding to Saunder's variety, 

 in which case it may stand as follows : 



CATAGRAMMINA HEWITSONI, H. Sp. 



Necyria tapaja, var., Saunders, Trans. Ent. Soc. Lond. (2), v. p. 



108, pi. n, fig. 1 8 (1859). 

 Catagrammina tapaja, pt. Bates, /. c. (1868); Staudinger, Exot. 



Schmett. i. p. 262, pi. 92 (1888). 



The male differs from that of C. tapaja, as explained above, 

 by the absence of a red blotch or band on the hind-wings ; and 

 the female by the black stripe on the sub-median nervure of the 

 fore-wings being replaced by a black stripe below the nervure, 

 and a corresponding blotch above. 



The next section contains the species in which the sub-costal 

 nervure has only three branches. It only includes one genus. 



GENUS ISAPIS. 

 Isapis, Westwood, Gen. Diurn. Lepid. p. 465 (1851); Schatz 



& Rober, Exot. Schmett. ii. p. 258 (1892). 

 The type is 



ISAPIS AGYRTUS. 



Papilio agyrtus, Cramer, Pap. Exot. ii. pi. 123, figs. B, C (1777). 

 Erycina agyrtus, Godart, Enc. Meth. ix. p. 590, no. 126 (1823). 

 Isapis agyrtus, Doubleday and Hewitson, Gen. Diurn. Lepid. 



pi. 72, fig. 5 (1851) ; Staud. Exot. Schmett. i. p. 246, pi. 89 



(1888). 



