HELIOPETES. 445 



2. Heliopetes arsalte. (Tab. xc. figg. 17, 18, 19 <$ .) 



Papilio arsalte, Linn. Mus. Ulr. p. 246 1 ; Syst. Nat. i. p. 762 2 ; Clerck, Icon. Insect, t. 22. f. 2 3 . 

 Leucochitonea arsalte, Aurivillius, Kongl. Svenska Vet.-Ak. Handl. xix. no. 5, p. 58 4 . 

 Heliopetes arsalte, Wats. P. Z. S. 1893, p. 64 5 . 

 Leucochitonea bianca, Plotz, Stett. ent. Zeit. 1885, p. 37 V 



Alis albis, nigro marginatis ; antieis angulo apicali latiore nigro maculas elongatas includente ; posticis ciliis 

 albis fusco intermixtis, margine interno fusco atomato : subtus albis ; antieis costa ad basin aurantia, ad 

 apicem venis omnibus nigris; posticis venis omnino fuscis, area juxta venam medianam et ramum guum 

 primum et area juxta venam iuternam latiore fuscis ; corpore supra fusco, subtus albo ; palpis subtus albis. 



Hab. Mexico, Presidio de Mazatlan (Forrer), San Bias (W. B. Richardson), Misantla 

 (F. D. G.), Orizaba (H. J. Flwes), Atoyac (H. II. Smith), Cordova (Bumeli), Teapa 

 (H. H. Smith) ; British Honduras, Corosal {Roe) ; Guatemala, Choctum, Polochic 

 and Motagua Valleys (F. B. G. & 0. #.), Cahabon, Panima, Teleman, San Geronimo 

 (Champion); Honduras, San Pedro (G. M.Whitely) ; Nicaragua, Chontales (Belt); 

 Costa Eica, Irazu, Cache (Bogers) ; Panama, Chiriqui, Veraguas, Calobre (Arce), Lion 

 Hill (M'Leannan). — South America generally to Paraguay ; Jamaica. 



Heliopetes arsalte is one of the commonest of the HesperiidaB in the Neotropical 

 region, being found everywhere throughout the low -lying country up to an elevation 

 of about 3000 feet. There is little individual variation between specimens from 

 remote distances, so that no separation into geographical races seems practicable. 

 Mexican and Central-American specimens have the apex of the primaries, as a rule, 

 rather darker, so that the subapical band of white spots is more or less isolated 

 The exceptions are so frequent that no separation of the northern insect is desirable ; 

 but it is probably to it that Plotz's name Leucochitonea bianca, described from specimens 

 from an unknown locality 6 , is applicable. 



The male genitalia have the tegumen ending in a hook, which is bent downwards 

 from its base almost to a right angle, the point nearly meeting the well-developed 

 scaphium : the harpes are cleft at the end so as to form two lobes, the lower of which 

 is bent inwards and armed along its extremity with a strongly serrate edge ; the upper 

 lobe is shorter and rounded at the end. (See Tab. XC. fig. 19.) 



3. Heliopetes petrus. 



Brontiades petrus , Hiibn. Verz. bek. Schm. p. 113 \ 

 Leucochitonea petrus, Plotz, Stett. ent. Zeit. 1885, p. 38 2 . 

 Urbanus juvenis niveus, Hiibn. Samml. ex. Schm. i. t. 159. ff. ], 2 3 . 

 Leucochitonea laginia, Hew. Descr. Hesp. p. 48 4 . 



Alis nitide albis ; antieis angulo apicali et margine externo nigricautibus, illo fasciam obliquam maculosam, 

 interdum obsoletam albam includente ; posticis nigro anguste marginatis ; ciliis interne albis, externe 

 nigris : subtus alis ad basin ocbraceo lavatis ; antieis fascia subapicali multo majore, maculis duabus 

 inferioribus majoribus ; posticis venis et linea angusta marginali nigris, macula ad medium marginis 

 extend nigra : corpore supra nigricanti-griseo piloso, subtus linea mediana et una utrinque alba longi- 

 tudinaliter notato ; palpis subtus nigris, squamis paucis albis intermixtis. 



