566 EHOPALOCEEA. 



rather slender. The middle tibiae are without spines, and the hind tibiae have two 

 pairs of spurs. The primaries of the male (Tab. C. fig. 26) (except in M. simplicissimus, 

 fig. 28) have an inconspicuous treble brand completely covered by the coarser scales : 

 (1) a very short longitudinal streak just above the first median branch at some distance 

 from its base ; (2) a much longer streak immediately below this ; (3) a still longer 

 streak along the upper edge of the submedian nervure at the middle. 



1. Mnasitheus cephis, sp. n. (Tab. C. figg. 26, 27, <$ .) 



Alis nigro-fuscis, unicoloribus, stigmate concolore : subtus ut supra, Bed purpureo tinctis. 

 § mari similis. 



Hob. Mexico, Misantla (F. B. G.) : Guatemala, Zapote (Champion). 



Very like Mnasalcas uniformis (Butler), but smaller, and with the brand very 

 differently formed. Of this obscure species we have at present only detected four 

 specimens. The brand on the primaries and the longer terminal joint of the palpi, as 

 well as the form of the tegumen, separate it from M. simplicissimus. A male from 

 each locality has been dissected. For the genitalia, see Tab. C. fig. 27. 



2. Mnasitheus simplicissimus. (Tab. C. figg. 28, 29, s .) 



Pamphila sirnplicissima, Herr.-Schaff. Corresp.-Blatt Regensb. 1870, p. 159 \ 

 Cobalus nigritulus, Mab. Compt. Rend. Soc. Ent. Belg. xxvii. p. lxii 2 . 



Ahs nigro-fuscis, unicoloribus : subtus ut supra, palpis pilis fuscis et aureis intermixtis vestitis ; ciliis obscure 



griseis. 

 5 mari similis. 



Hob. Mexico, Jalapa (M. Trujillo), Coatepec (coll. Schaus), Orizaba (F. D. G. & 

 H. J. Elwes), Atoyac, Teapa (H. H. Smith) ; Guatemala, San Geronimo, Zapote 

 (Champion)', Hondueas (Dyson), San Pedro ( Whitely) ; Panama 2 , Chiriqui (ex Staud- 

 inger).— Venezuela \ Puerto Cabello; Beazil 2 . 



This is one of several very closely allied species Avhich have no brand on the 

 primaries in the male. It is chiefly distinguished by the obscurely coloured fringe, 

 the golden hairs on the underside of the palpi, and the form of the male genitalia, for 

 which see Tab. C. fig. 29. We have dissected five Mexican examples, all of which are 

 precisely alike. The females are scarcely separable from those of several of the 

 allied forms. 



We possess a male from Venezuela, which we believe to be Herrich-Schaffer's type, 

 and Mr. H. H. Smith has supplied us with a very long series from Atoyac and Teapa 

 in Eastern Mexico. This is one of two species from Chiriqui sent us by Dr. Staudinger 

 under the MS. name of Pamphila modesta, but this term we have applied to the other 

 insect*. 



* Cobalus chrysoplirys, Mab., from Colombia, the type of which, a male, has been lent us by Dr. Staudinger 

 is also very like M. simplicissimm ; but it has longer antennae, a paler fringe, and an inconspicuous double 

 brand formed of a long streak above the submedian nervure and another below the first median branch 



