396 CATALOGUE OF 



Genus 119. GYMNOCERA. 

 Gymnocera, Brulle, Hist. Nat. Ins. ix. Serv. Hist. Orlh. 425. 



1. GYMNOCERA DENODA. 



Scapbnra denuda, Grier. et Perch. Gen. Ins. Orth. pi. 4. Burm. Handb. 

 Ent. ii. 687 Gymnocera Lefebvrei, Brittle, Hist. Nat. Ins. ix. 146 

 Serv. Hist. Orth. 426. 



Brazil. 



2. GYMNOCERA ELEGANS. 

 elegans, Serv. Hist. Orth. 427. 



Buenos Ayres. 



3. GYMNOCERA MODESTA. 

 modesta, Blanch. Gay, Chile, vi. 47. 



Chili. 



4. GYMNOCERA BICOLOR. 



Scaphura bicolor, Blanch. Voy. D'Orbigny, vi. 215, pi. 20, f. 7. 

 Patagonia. 



5. GYMNOCERA MARGINATA. 



Mas. Teslacea ; verlicis carina albida, sulcata, apice obtusa ; frons inter 

 antennas albida, fere semicircu laris ; antennce nigrce, basin versus 

 testaceo varice ; abdomen atrum, basi apii'eque cyaneum ; femora 

 apice, tibiae basi taraique cyanea ; alee anticce fulvce, viridi venosce ; 

 alee posticce luridce, nigricante marginatce. 



Male. Testaceous. Keel of the vertex whitish, furrowed, ohtuse at 

 the tip; front between the antennae whitish, nearly semicircular. Eyes 

 elliptical, prominent. Antennae black, very much longer than the body, 

 with two testaceous bands near the base, which is wholly testaceous. Pro- 

 thorax with two purplish patches on each side. Mesothorax and meta- 

 thorax metallic-blue. Dorsum of the abdomen deep black, metallic-blue 

 at the base and at the tip. Oviduct tuberculated, serrated. Femora at the 

 tips, tibiae at the base and tarsi blue. Fore wings tawny ; veins pale green. 

 Hind wings lurid, with a blackish border. Length of the body 11 lines; 

 expansion of the fore wings 30 lines. 



The dark border of the hind wings distinguishes it from G. denuda 

 and from G. elegans; G. bicolor differs from it in the markings of the 

 pro thorax. 



a. Demerara. 



