42 CATALOGUE OF 
Genus 14. ELASMODEMA. 
Elasmodema, Stal, Rio Jan. Hem. 68. 
1. Exvasmoprema Ericasonl. 
Erichsoni, Stal, Rio Jan. Hem. 68. 
Rio Janeiro. 
This and the following genus are perhaps more allied to the Nudirostra 
than to the Corticole, and may form a family of the former when a few 
more forms to be associated with them are known. 
Genus 15. ISODERMUS. 
Isodermus, Erichs. Arch. Naturg. viil. 281. 
1. IsopERMUS PLANUS. 
planus, Erichs. Arch. Naturg. viii. 282, pl. 5, f. 9. 
Tasmania. 
a, b. South Australia. Presented by R. Bakewell, Esq. 
c. South Australia. From Mr. Stevens’ collection. 
2. IsoDERMUS VACILLANS. 
Mas. Fulvus, nitens, transverse et subtilissime rugulosus, postice lates- 
cens; caput parvum, cornu frontali porrecto lanceolato ; antenne 
breves, articulo 20 lo plus duplo longiore ; prothorax fascia postica 
pallidiore, lateribus subrotundatis ; pedes breves, femoribus robustis ; 
ale antice abdominis apicem non altingentes, corio parvo, membrana 
nigricante. 
Male. Tawny, flat, shining, transversely and very finely rugulose, 
widening from the head to near the tip of the abdomen, which is rounded. 
Head small; a lanceolate horn in front, longer than the first joint of the 
antenne. Eyes not prominent. Rostrum as long as the head. Antenne 
less than one-third of the length of the body; second joint more than twice 
the length of the first. Prothorax with a paler band near the hind border, 
narrower in front; sides slightly rounded. Legs short; femora stout. 
Fore wings extending to three-fourths of the length of the abdomen; 
corium small; membrane blackish. Length of the body 23 lines. 
a. Tasmania. Presented by the Entomological Club. 
