4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



Thorax with pronotum slightly widest posteriorly, approximately 

 three times as long as vertex; macropterous; forewings with four 

 apical and two anteapical cells of which outermost is closed and 

 innermost is open basally, appendix well developed; hind wings with 

 inner fork of radius and outer fork of media confluent distally, only 

 three apical cells; hind femoral chaetotaxy 2-1-1 or 2-2-1; basal 

 hind tarsomere distinctly sulcate basally. 



Male pygofer deeply incised on ventral border, setae pubescent, 

 microsetae present in irregular patterns, with heavily sclerotized 

 process present in several species; plates usually triangular, setae 

 uniseriate along exterior margin; style with apical extension usually 

 digitiform; connective Y-shaped; aedeagus usually simple but with 

 processes arising on base or shaft in several species. 



Color variable, from stramineous to brown to green; face with or 

 without oblique brown lines on each side of midline; thoracic venter 

 commonly darker than general body color; forewings hyaline to sub- 

 hyaline wath dark brown to reddish spots or stripes present in some 

 species. 



Genus Balclutha Kiskaldy 



Gnathodus Fiobcr, 1866 (not Pander, 1856, [Polychaeta]), Verhandl. Zool.-Bot. 



Ges. Wien., vol. 16, p. 505. [Type by monotypy, Cicada punctata F. 1775.] 

 Balclutha Kirkaldy, 1900, Entomologist, vol. 33, p. 243. [N ewname i or Gnathodus 



Fieber.] 

 Eugnathodus Baker, 1903, Invert. Pacifica, vol. 1, p. 1. [Type by original desig- 

 nation, Gnathodus abdominalis Van Duzee, 1892.] 

 Nesostelcs Kirkaldy, 1906, Bull. Hawaiian Sugar Planters' Assoc. Expt. Sta. 



Div. Ent., vol. 1, p. 343. [Type by original designation, Nesosteles hebe 



Kirkaldy, 1906.] 

 Anomiana Distant, 1918, Fauna British India, vol. 7, p. 109. [Type by original 



designation, Anomiana longula Distant, 1918.] 

 Agellus DcLong and Davidson, 1933, Ohio Journ. Sci., vol. 33, p. 210. [Type by 



original designation, Eugnathodus neglecta DeLong and Davidson 1933.] 



Key to Males of the Western Hemisphere^ 



1. Head as wide as or wider than pronotum, if narrower, then pygofer 



with a heavily sclerotized pi'ocess which is bifid apically 2 



Head narrower than pronotum 18 



2(1). Connective bifid apically, or at least with apical margin concave ... 3 



Connective truncate apically 11 



3(2). Pygofer with distinct heavily sclerotized process present on postero- 



ventral margin 4 



Pygofer without a process 6 



4(3). Pygofer process distinctly bifid apically, arising on inner surface; aedea- 

 gus with dorsal apodeme simple, shaft unevenly curved (fig. 19). 



rufofasciata (Merino) 



' /}. rosacea (Osboru) is omitted because it is known only from the female. 



