394 



ARCTIAD^. 



maculate black-edged brown fascia, lateral series of spots, the ventral 

 surface white with medial series of spots. Fore wing white, with 

 black-edged brown markings ; a subbasal spot on costa ; antemedial, 

 medial, and postmedial irregular bands, oblique towards costa, and all 

 conjoined below the cell, where they enclose small black-edged white 

 spots near base, at middle, and several beyond middle ; a triangular 

 patch on costa before apex ; a terminal irregularly dentate band 

 conjoined to the postmedial band below apex. Hind wing yellow, 

 the disk semihyaline ; three brown spots on costa, slight streaks on 

 median nervure and vein 1 ; two points near lower angle of cell ; 

 some subterminal and terminal points and a larger spot near tornus. 

 Underside of fore wing with the ground-colour of costal half yellow 

 to beyond middle. 



2 . Hind wing without hyaline on disk ; black-edged antemedial, 

 postmedial, and subterminal brown bauds, the two latter bent out- 

 wards to tornus ; a terminal black line ; cilia brown. 



Hab. U.S.A., New Mexico, Las Vegas; Mexico, Durango (Becker)^ 

 1 c^ , 1 2, Godman-Salvin Coll. Exj)., d 60, $ 74 millim. 



1945. Arachnis albescens, n. sp. (Plate XLYII. fig. 25.) 



Arachnis confusa, Druce, Biol. Centr.-Am., Het. ii. p. 378 (part). 



S . Head and thorax grey-white ; tegulae and patagia with 

 fuscous-edged lunules ; legs with fuscous rings ; abdomen orange, 

 the ventral surface white. Fore wing semihyaline, the costal and 

 inner areas white ; series of irregular black-edged annulate spots ; 

 subbasal spots on costa and median nervure ; an antemedial series 

 angled below costa, then oblique ; a medial series angled in cell; a 

 postmedial series angled at lower angle of cell ; a subterminal series 

 with some of the spots more elongate ; a terminal series with some 

 of the spots almost linear. Hind wing white, with antemedial, 

 medial, and postmedial black-edged annuli on costa. 



Hah. Guatemala {Rodriguez), 1 S type, Godman-Salvin Coll. 

 Exp. 40 millim. 



*1946. Arachnis mishma. 



Arachnis onishma, Druce, Biol. Centr.-Am., Het. ii. p. 379, pi. 75. f. 10 

 (1897). 



(S . Head and tegulae white, the latter with black-edged brown 

 spots ; palpi greyish ; antennae black ; patagia and thorax 

 grey, the former edged with black ; pectus and legs grey ; 

 abdomen crimson, with a dorsal fascia and the terminal segment 

 black, the ventral surface grey. Fore wing grey-brown, with 

 five black-edged brown spots on costal area; a dark-edged pale 

 medial line from cell to inner margin strongly incurved above 

 vein 1 ; a pale postmedial spot on inner margin ; the terminal area 

 semihyaline from origin of vein 2 to apex and tornus, the veins 

 dark with pale points. Hind wing hyaline ; the costal area grey- 

 brown barred with white, the inner area clothed with blackish hairs, 



