On some Madagascar Lepido^tera. 283 



EXPLANATION OF PLATE XIU. 



Fiy. 1. PentacJieles enthrix. 



Fig. 2. The same : eye, seen from beneath. 



Fiff, 3. The same : chela of the posterior paii* of pereiopoda. 



Fif/. 4. Willemoesia leptodactyla : anterior portion of one side of the cara- 

 pace, showing eye and 1st and 2nd antennae. 



Fig. 5. The same : frontal margm of carapace, showing eyes, seen in front. 



Fig. 6. Polycheles crucife)' : anterior portion of one side of carapace, 

 showing eyes and the 1st and 2nd anteimae, seen fi"om above. 



Fig. 7. The same : eye, seen beneath and in front. 



Fig. 8, The same : fifth pair of pereiopoda. 



XXXIII. — On a Collection of Lepidoptera recently received 

 from Madagascar. By Akthuk G. Butler, F.L.S., 

 F.Z.S., &c. 



The Lepidoptera here enumerated were collected by the Eev. 

 William Dean Cowan. 



The series of butterflies in the collection represents rather 

 less than one third of those hitherto recorded as occuii-ing in 

 Madagascar y and, owing to the careful manner in which Mr. 

 Cowan has recorded upon each envelope all facts known to 

 him respecting the species therein contained, not a little infor- 

 mation respecting the habits and distribution of the Mascarene 

 forms has been gained. 



The collection contains forty-one butterflies and fifteen 

 moths, as follows. 



Rhopaloceea. 



NymplialidaB. 



Sattsiju^j Bates. 



Mycalesis, Hiibner. 



1. Mycalesis ibitina. 

 Mycalesis ibitina, Ward, Ent, Mo. Mag. x. p. 60 (1873). 



One female found in the forest, Fianarantsoa. 



This is the first time that I have seen this species. It is a 

 singular form, having tlie under surface of the secondaries 

 clouded and striated like a Pedaliodes. 



2. Mycalesis perdita^ n. sp. 



Upper surface chocolate-brown, with a slight purple gloss j 

 secondaries with an ill-defined blackish submarginal line. 

 Wings below a little paler than above, with the exception of a 



