PYBBHOPYGKE.— MYSOEIA. 253 



rufescentibus, posticis plerumque rufis, margine externo late brunneo, fasciis tribus irregularibas 

 maculosis nigris, una per cellulain, altera ultra earn, tertia discali aurantio-rufis : corpore subtus 

 aurantio-rufo, abdomine nigro cincto. 

 $ mari similis. 



Hah. Mexico (Mas. Brit. 1 ), Milpas in Durango (Forrer), Pincon, Xucumanatlan in 

 Guerrero (H. II. Smith), Cordova (Bumeli), Oaxaca {fide Plotz 2 ). 



Hewitson's description of this species was based upon a Mexican specimen now in 

 the British Museum. Our Mexican series of examples agrees generally with the type, 

 though there is a considerable amount of variation as regards the definition of the 

 markings of the underside of the secondaries. In Arizona specimens these marks are 

 evanescent, and the dark outer border is not clearly denned on its inner edge. The 

 difference is sufficient to constitute a distinct race. Plotz also recognized two forms, 

 but unfortunately gave a new name, cyrillus, to the true araxes, the Arizona form being 

 his araxes. To rectify this we propose to call the northern insect Pyrrhopyge arizonce, 

 specimens of both sexes being in our collection, sent us by Morrison from the neigh- 

 bourhood of Fort Grant. 



The true P. araxes appears to be more abundant in Western than in Eastern Mexico, 

 as we have received a good series of specimens both from Mr. Forrer and Mr. Herbert 

 Smith ; and according to Plotz it occurs as far south as the State of Oaxaca 2 , In Eastern 

 Mexico, Riimeli found it near Cordova ; and though we have other specimens without 

 precise locality which probably came from the same district, this is the only exact 

 locality we know of. Mr. Schaus has several examples in his collection, but none of 

 them are definitely located. 



P. araxes has sometimes been assigned to the genus Myscelus, but the structure of 

 the antenna? and the neuration indicate that it should be placed in Pyrrhopyge. The 

 male genitalia somewhat resemble those of P. phidias, the dorsal edge of the harpes 

 having two lobes directed backwards. The tegumen has a short, slender, central hook 

 and a stronger one less curved on either side ; the scaphium is fully developed and 

 chitinized. (See Tab. LXXIII. fig. 16.) 



MYSOEIA. 

 Mysoria, Watson, P. Z. S. 1893, p. 12. 



This genus, of which the type is Papilio acastus, Cram., was separated from Pyrrho- 

 pyge by Mr. Watson. One of the best characters by which it can be distinguished is 

 the absence of the dorsal row of hairs on the hind tibiae prominent in Pyrrhopyge. This 

 character is not employed by Mr. Watson, though we think it of considerable utility, 

 as it brings into this genus M. amra, M. affinis, and M.galgala, a more natural position 

 for them than in Pyrrhopyge. Thus expanded the genus contains nine or ten species, 

 four of which occur within our limits. Compared with Pyrrhopyge, Mysoria has 



