184 RHOPALOCERA. 
notata; subtus ut supra, sed alis dilutioribus et flavicantioribus marginibus nigris externis lunulis flavis 
vix notatis. 
Hab. Nicaragua, Chontales (Janson) ; Costa Rica (Van Patten®). 
This species is closely allied to the South-American EH. eunice (Hiibn.), well described 
in several of its forms by Mr. Bates*. From all of these forms E. mechanitis differs in 
having the apex of the wings crossed by two well-defined yellowish tawny bands, the 
innermost of which has but slightly indented margins instead of being broken up into 
an indefinite band. The outer band is distinct, instead of being a faint spot as in 
EH. eunice. 
As in the region of the Amazons, this form of E. ewnice follows the colour-pattern of 
the races of Mechanitis polymnia and Heliconius numata found in the same district— 
Mechanitis doryssus and Heliconius telchinia being what may be called the homeeochro- 
matic associates of E. mechanitis. 
E. mechanitis is a scarce species; for the type from Nicaragua’ and two specimens 
from Costa Rica are the only ones we have yet seen. 
Our figure is taken from the Nicaraguan type. 
9. Eresia drypetis. (Tab. XX. figg. 11, 12.) 
Eresia drypetis, Godm. & Salv. P. Z. 8. 1878, p. 269°. 
E. mechaniti similis, sed margine anticarum interno fulvo nec nigro, macula flavicante ad apicem minore, et 
fascia transversa posticarum nigra angustiore distinguenda. 
Hab. Guaremata, interior (F. D. G. & O.S.1); Panama, Lion-Hill station (M‘Leannan?). 
—CoLoMBIA. 
This, too, is a close ally of E. ewnice and the last-mentioned species, but differs in 
several points. The transverse band of the secondaries is so narrow as to be almost 
broken up into spots; and it resembles in this respect the race of Lf. eunice described 
by Mr. Bates as E. olivencia. The band across the primaries is isolated and distinct, 
though the spot in the apex is much smaller than in £. mechanitis. 'The tawny colour 
of the base of the primaries reaches to the inner margin; and the black mark over the 
median nervure in FE. eunice and E. mechanitis is almost obsolete, 
Though, as will be seen above, £. drypetis has a wide range, it is by no means a 
common insect. A single Guatemalan example and two from Panama are all the 
Central-American specimens we possess. The former was taken by usin 1862; but the 
record of the precise locality has been lost: it was most probably from the department 
of Vera Paz. Besides these examples we have lately received others from Dr. 
Staudinger, which were taken in Western Colombia, on the Rio San Juan, not far 
from San Buenaventura. 
We have figured a Panama specimen. 
* Journ. Ent. i. p, 191. 
