390 RHOPALOCERA. 
Z. bogota seems to be rare in Central America, and our series includes but few 
examples; with them is a single damaged male from Belt’s Chontales collection. , 
Frequents sunny openings in the forest (Champion). 
b. Subcostal nervure of the primaries with one branch emitted before and two after 
the end of the cell. 
a’. Middle discocellular of primaries perfect*. 
DIORHINA. 
Diorina, Morisse, Ann. Soc. Ent. France, vi. p. 422 (1837). 
We recognize four species of this genus, its range extending from South Mexico to 
South Brazil; all but one of these are also found in our country, only one of them, 
however, D. butes, is at all common. 
Diorhina is very closely allied to Erycina, the neuration of the wings offering, so far 
as we can see, no material difference, except that one branch is emitted from the 
subcostal of the primaries instead of none ; the palpi projecting in front of the head are 
very apparent when viewed from above, and the absence of metallic colouring from 
the wings of both sexes serve as distinguishing characters; there are differences in 
the secondary sexual organs. The harpagones have a single lobe which bends 
upwards rather abruptly at its extremity, near which are some strong spines directed 
upwards and mingled with them some long hairs; an arch extends over the penis 
bearing two lobes directed upwards and slightly expanded towards the extremity and 
edged with short strong spines directed slightly outwards ; the penis itself is not nearly 
so dilated towards the base as in Erycina; the strap connecting it with the base of the 
harpagones is directed forward before being bent backwards again. In D. butes both 
the lobes of the harpagones and those of the median arch are more pointed and bear 
strong spines towards their ends. The bursa copulatrix of D. periander is without 
chitinous spines. 
1. Diorhina periander. 
Papilio periander, Cram. Pap. Ex. t. 188. f. C?. 
Diorhina periander, Bates, Journ. Linn. Soc. Zool. ix. p. 429°. 
Ancyluris iphinoe, Hibn. Samml. ex. Schm. iii. t. * 
Alis fusco-nigris, anticis ad basin et posticis fere omnino lete cerulescentibus ; anticis fascia transversa indi- 
stincta ultracellulari fusco-albida; posticis maculis duabus puniceis, una ad medium marginis interni, altera. 
ad angulum analem ; subtus fuscis bifasciatis, fascia interiori latiore, anticis ad basin coste coccineis, 
posticis ad angulum analem maculis tribus (interdum confluentibus) puniceis; palpis extus albidis, 
cruribus anticis fuscis. 
Q major, alis omnino fuscis albido bifasciatis, aliter mari similis. 
Hab. British Honpuras (Blancaneaur); Guatemana, forests of Northern Vera Paz 
(F. D. G. & O.8.); Nicaragua, Chontales (Belt); Panama, Lion Hill (M‘Leannan).—~ 
SoutH AMERiIcA, Colombia to Peru, Amazons valley and Guiana }. 
* The extralimital genera Orestia and Threnodes (?) come into this division. 
