RHINTHON. 531 



The antennas are about half the length of the costa, longer in B. megalops, and have 

 a moderately stout club, terminating in a long crook. The palpi are densely clothed 

 with scales; the third joint very short, stout, and bluntly conical. The primaries are 

 rather pointed at the tip, with the outer margin straight towards the anal angle ; the 

 cell is considerably less than two-thirds the length of the costa ; the discocellulars are 

 strongly oblique, the upper one fully twice the length of the lower, the latter a little 

 shorter than the third median segment; the lower radial is strongly depressed at the 

 base ; the first branch arises considerably before the middle of the median nervure, 

 the second at some little distance before the lower angle of the cell. The secondaries 

 are slightly lobed at the anal angle ; the discocellulars are faint. The body is robust. 

 The middle tibiae are furnished with long, the hind tibiae with shorter spines ; the 

 latter have two pairs of spurs. The primaries of the male have an inconspicuous 

 longitudinal brand placed along the upper edge of the submedian nervure, at or before 

 the middle. 



a. Primaries with large hyaline spots. 



1. Rhinthon chiriquensis. (Tab. XCVII. figg. 41-44, <? .) 



Proteides chiriquensis, Mab. Le Nat. 1889, p. 127, f . 1 ( <? ) x . 



Alis nigro-fuscis, stigmate elongato griseo, anticis ad basin brunnescentioribus, maculis duabus inter ramos 

 medianos, proxima magna subquadrata, altera apici propiore, una in cellula geminata, punctisque tribus 

 in linea curvata transversa, albo-hyalinis, infra venam submedianam pilis longis penicillatis ; posticis (nisi 

 regione costali) pilis ochraceo-fuscis vestitis, punctis duobus ultra cellulam albis : subtus ut supra, anticis 

 angulum analem versus pallidioribus, in costa et apice late, posticisque omnino, squamis dispersis griseis 

 sparsim vestitis ; posticis puncto in cellula, et aliis tribus in linea transversa ultra eum, albis ; capite 

 supra viridi tincto ; palpis subtus pilis albidis. 



$ mari similis, sed anticis maculis in cellula confluentibus. 



Hab. Mexico, Atoyac, Teapa (H. H. Smith); Guatemala, Panima in Vera Paz 

 {Champion); Panama, Chiriqui (mus. Staudinger 1 ), Calobre (Arce). 



We have seen five males and two females of this species, including the type. Mabille 

 referred R. chiriquensis to the genus Proteides, from which, as we understand it, it 

 differs in having a conspicuous brand on the primaries in the male, as well as in the 

 neuration of these wings. Dr. Staudinger has also sent us a female specimen of the 

 present species under the name of Pamphila citbana, H.-S., but this determination 

 seems to us to be very doubtful. We figure the type from Chiriqui ; also the fore 

 wing of the male, to show the position of the brand (Tab. XCVII. fig. 43), and the 

 genitalia, for which see Tab. XCVII. fig. 44. 



b. Primaries with small hyaline spots. 



2. Rhinthon cynea. (Tab. XCVIII. figg. l, 2, 3, e .) 



Hesperia cynea, Hew. Ann. & Mag. Nat. Hist. (4) xviii. p. 456 (1876) \ 

 Carystus erebina, Moschl. Verh. zool.-bot. Ges. Wien, 1878, p. 211 \ 



