MESOTHEN. 1 t3 



on basal half of eosta and above inner margin ; the terminal hand 

 expanding slightly towards apex and at tornus. 



Huh. Colombia, Valparaiso, 4500 ft. (H. H. Smith), type t $ 

 in Coll. Joicey, Pacho (EassI), 1 § . Exp. 3(3 millim. 



*443 a. Mesothen semiflava. 



Loxophlebia semiflava, Eotlis. Nov. Zool. xviii. p. 30 (1911), and xx. 

 p. 471, pi. xiv. f. 33. 



S ■ Head and thorax blackish ; frons white with a blackish bar ; 

 antennae white at tips ; patagia with yellow patches near base ; fore 

 coxa? white ; abdomen orange-yellow with blackish dorsal and 

 lateral marks on basal segment, the ventral valve brown defined by 

 black. Fore wing hyaline, the veins and margins black; the base 

 black ; a narrow black discoidal bar conjoined to the black costa ; 

 the terminal band expanding moderately towards apex and slightly 

 below vein 2. Hind wing hyaline, the veins and margins black, 

 the terminal band expanding slightly towards apex ; the underside 

 with the cell and costal area black. 



Sab. Venezuela, Caura R., Corosito (Klages), type f S in 

 Coll. Rothschild. Exp. 30 millim. 



443 b. Mesothen albifrons. (Plate VII. fig. 13.) 



Mesothen albifrons, Sehaus, J. N.Y. Ent. Soc. ix. p. 41 (1901). 



Head black, the frons white ; thorax black, yellow at sides and 

 below, the tarsi and parts of tibia? black ; abdomen yellow, the last 

 four segments above, the last two below, black with a greyish 

 tinge ; win^s hyaline, the veins and margins black. Fore wing 

 with the terminal black hand expanding widely on apical area and 

 slightly towards tornus. 



Hab. Colombia, type f 6 in U.S. Nat. Mus. (Fassl), 1 ?. 

 Exp. 26 millim. 



*443 c. Mesothen ethela. (Plate VII. fig. 14.) 

 Mesothen ethela, Sehaus, A. M. N. H. (8) vii. p. 175 (1911). 



2- Head and thorax black-brown; frons white; patagia with 

 white patches at base ; fore and mid coxa? with white patches ; 

 mid and hind legs streaked with whitish on inner side; abdomen 

 yellow, the extremity black. Fore wing hyaline, the veins and 

 margins black-brown ; a white point at base of cell ; a black-brown 

 discoidal bar conjoined to the costal area; the black on termen 

 expanding widely on apical area and moderately below vein 2. 

 Hind wing hyaline, the veins and margins black-brown, the black 

 on termen expanding towards apex ; the cell and inner area black. 



Hab. Costa Rica, Sixola R, (Sehaus), type t ? i" U.S. Nat. 

 Mus. Exp. 30 millim. 



