358 RHOPALOCERA. 
angulo anali producto fulvis, margine externo fusco-nigro lunulas quatuor flavas continente; subtus alis 
ochraceo-fulvis, undique marmoratis. 
Q mari similis, sed major. 
Hab. Mexico, Cordova (Riimeli); Guatemata, San Gerénimo, Polochic valley (f. D. 
G. & O. S.); Senahu, Cahabon, Cubilguitz, Panima, Las Mercedes, and San Isidro 
(Champion); NicaraGua, Chontales (Belt, Janson); Costa Rica (Van Patten).— Ecuavor}. 
The type of P. cecrops is said to have come from Guayaquil in Western Ecuador, 
but we have never seen an authentic specimen from further south than Costa Rica. 
The figure given in the ‘Genera of Diurnal Lepidoptera.’ fairly represents the Central- 
American insect, except that the latter has the marks in the apical part of the primaries 
of a purer yellow. The characteristic yellow apex is, however, shown, though rather 
more tawny in tint. 
P. cecrops is very closely allied to the next species, and the only tangible difference 
is in the apex of the primaries being yellow, instead of a band of yellow spots running 
more or less parallel to the outer margin. 
2. Protogonius tithoreides. 
Protogonius tithoreides, Butl. P. Z. S. 1873, p. 774. 
P. cecropi persimilis, sed anticarum apice haud flavo et maculis sex submarginalibus flavis notatis, prima, quinta 
et sexta maximis ; fascia quoque fulva extus flavo limbata, distinguenda. 
Hab. Panama, Volcan de Chiriqui, Bugaba and David (Champion), Calobre (Arcé), 
Lion Hill Station (M‘ZLeannan).—Co.tomBia !; VENEZUELA. 
This species can be distinguished from P. cecrops by a slight character which seems 
constant. ‘The primaries have a band of yellow spots more or less parallel to the outer 
margin instead of the apex alone being yellow. ‘That it should bear this name 
bestowed upon it by Mr. Butler seems certain, but whether it can be always distin- 
guished from other forms of P. hippona is perhaps doubtful. We have a large series 
of Protogonius, and we feel convinced that this is one of those cases where the larger 
the series examined the greater will be the difficulty in defining the races into which a 
smaller series seems divisible. 
Protogonius tithoreides is abundant in the State of Panama, from the district of 
Chiriqui to the line of railway. In Costa Rica it.is replaced by P. cecrops. 
