MORPHO. 115 
of which is sufficiently constant to enable us to discriminate between the two. 
Having come to this conclusion, we look upon UV. theseus as a species of a rather 
wide range, extending from the upper valleys of the Cauca and Magdalena rivers in 
Colombia, probably uninterruptedly, through the State of Panama to Costa Rica. 
Beyond this point we have not yet traced it. In Guatemala and Southern Mexico 
its place is taken by the next closely allied species, UM. justitic. 
2. Morpho justitia. (Tab. XI. figg. 1, 2.) 
Morpho justitie, Salv. & Godm. Ann. & Mag. Nat. Hist. ser. 4, ii. p. 1491. 
Morpho theseus, Boisd. Lép. Guat. p. 61°. 
M. theseo persimilis, sed alarum colore argenteo in mare absente, in femina vix preesente. 
Hab. Mexico; Guatemata, Polochic valley (Hague). 
A rare species in Guatemala, or one difficult of capture, judging from the few single 
individuals that have reached us at long intervals in the very large collections sent us 
by Mr. Hague from the valley of the Polochic in Vera Paz. We never met with it 
ourselves ; and it was not until 1867 that Mr. Hague secured the first example. 
Our authority for including Mexico within the range of VW. justitie rests on a single 
female specimen which was formerly in Mr. Druce’s collection, and said to be from 
that country. 
The species is very nearly allied to IZ. theseus, but constantly differs in the colour of 
the upper surface of the wings being rich brown to the base, the hoary grey of this 
portion of the wings of I. theseus being wholly absent in the male, and only faintly 
shown in the female. The other differences mentioned in our original description are 
probably of much less importance, and mostly indicate individual differences. Com- 
paring the female of MM. justitie with the male M. theseus the differences are not so 
marked as when individuals of the same sex are placed together. This probably led 
Boisduval to call a female of the former by the latter name 2. 
On the whole M. justitie is a fairly defined race, with a habitat distinct from that of 
M. theseus. 
Our figure represents one of the Polochic-valley specimens in rather fresher condition 
than the type, but not otherwise differing from it. 
6. Wings white, with a few black marks above and ocelli beneath. 
8. Morpho polyphemus. 
Morpho polyphemus, Westw. & Hew. Gen. Diurn. Lep. p. 339, t. 55. f. 17. 
Morpho luna, Butl. Cist. Ent. i. p. 4°; Lep. Ex. p. 50, t. 19. f. 2°, p. 118 (note)*. 
Alis albis semipellucidis, maculis pagine inferioris supra apparentibus, anticarum apicibus et fascia ad cellule 
finem plus minusve fuscescentibus ; posticis lunulis submarginalibus coloris ejusdem ornatis ; subtus anticis 
fascia per cellule medium fusca notatis et ocellis duobus (interdum tribus) ornatis, posticis ocellis sex 
(interdum quinque) notatis. 
Q 2 
