384 EHOPALOCEEA. 



The tegumen of the male genitalia is shorter than that of C. eligius, but is also 

 cleft, the two branches diverging considerably ; the scaphium is well developed and 

 hangs low in the anal cavity ; the harpes are divided into two short lobes with rounded 

 ends, the lower wide, and the upper slender. (See Tab. LXXXV. fig. 7.) 



MYLON, gen. nov. 



Several groups of species follow here, more or less related to one another and with 

 somewhat similar coloration. Hitherto most of them have been placed either in 

 Leucochitonea or Antigonus, but this arrangement can be no longer followed. 



Leucochitonea lassia of Hewitson may be taken as the type of the present genus, 

 with which L. jpulcherius seems to be strictly congeneric. 



The primaries are considerably curved and rather truncate, the cell rather broad ; the 

 third median segment short, about equal to the lower and middle discocellulars, which 

 are themselves subequal ; the second median segment is long and slightly curved ; the 

 discocellulars of the secondaries are subequal and, as "well as the radial, very feeble; the 

 third median segment very short, the second subcostal segment about equal to the 

 upper discocellular. The palpi end in a short porrect joint; the hind tibise have a 

 distinct tuft of hairs from the proximal end, and two pairs of spurs. 



The range of the genus extends over a large part of Tropical America, from Eastern 

 Mexico to South Brazil. 



1. Mylon lassia. (Tab. LXXXV. figg. 8, 9, 10 <j .) 



Leucochitonea lassia, Hew. Descr. Hesp. p. 49 (1868) \ 



Antigonus lassia, Plotz, Jahrb. Nass. ent. Ver. xxxvii. p. 28 (1884) 2 . 



Alls supra pallide fusco-albidis, ad basin multo obscurioribus, area submarginali quoque obscuriore, fasciis valde 

 irregularis notata, punctis quatuor subapicalibus, primo ad costam et tertio minoribus, secundo et quarto 

 majoribus, ad apicem magis approximate, linea subbasali nigrieante irregulari, area mediana pallida squamis 

 obscurioribus irregulariter notata; posticis medialiter albicantibus, basi et margine externo fuscescentibus 

 margine ipso obscunore, lineola ad cellulae finem et fascia discali maculosa pallide fuscis : subtus multo 

 albicantionbus, margine externo et area apicali antioarum fuscescentibus ; palpis infra albidis. 

 $ mari similis. 



Hob. Mexico, Jalapa, Coatepec, Rinconada (W. Schaus), Atoyac (H. H. Smith, 

 Schumann), Orizaba (H. J. JElwes), Cordova (Rumeli), Jalisco {Schumann) ; Guatemala', 

 San Geronimo (Champion), Northern Vera Paz, Izabal (F. I). G. & 0. S.); Nicaragua, 

 Chontales (Belt) ; Costa Eica, Cache, R. Sucio (Rogers); Panama, Chiriqui (Bibbe, 

 Arce), Bugaba (Champion), Calobre (Arce).~ South America, from Colombia to 

 Bolivia. 



The origin of Hewitson's type of his Leucochitonea lassia was not recorded \ but we now 

 know that the species has a very wide range, commencing in the north in the Mexican 

 States of Vera Cruz and Jalisco, and spreading thence over the whole of the hotter 

 parts of Central America and the western regions of South America as far south as 



