131 



before middle, beyond anus segment curved downward, slightly nar- 

 rowed to truncate apex; styles broader than long, in latero-ventral 

 view sublanceolate, apex turned inward, dorsal edge incrassate, the 

 margin turned inward and produced into a complex process, differing 

 considerably from that of albicosta. 



9 Anal segment exceedingly short set between two angular 

 plates, ventral border of genital area sinuate and elevated. 



Length 3mm. ; tegmen 8mm. 

 Hab. Urai, Formosa. (Muir, August.) 

 Besides the slight difference in color this species is differ- 

 entiated from albicosta by genital structures. 



(4) sauterii sp. n. 



^ Stramineous tinged with green, a small black dot on each side 

 of the third abdominal tergite another at each corner of last sternite 

 and on anal segment above anus; tegmina hyaline, opaque with waxy 

 secretion, veins yellow tinged with red along costa and subcosta, 

 slightly fuscous over radial and median basal cells and on veins, espe- 

 cially cross veins and in apical radial cells, faint spot at end of veins 

 on hind margin. 



Pygophor very short, anal segment longer than broad, sides sub- 

 parallel to anus where there is a slight constriction, rounded beyond 

 anus with a small median lip-like process in middle; styles subqua- 

 drate, base much narrower than apex, apical margin as long as dorsal 

 margin, both entire and slightly rounded, a deep depression near base 

 of ventral edge, a small, broad outwardly turned spine about middle. 

 5 Apex of abdomen (genital area) flattened, triangular; anal seg- 

 ment very short, below anus two downward and inward curved pointed 

 processes, near basal line of genital area two rounded knobs. 



Length 4mm. ; tegmen 9mm. 



Hab. Arisan, Formosa. (M. Maki, June ; Muir, August.) 

 This species is near variegata, especially in shape of geni- 

 talia. I have named it after Mr. H. Sauter, whose work in For- 

 mosa has added so much to our knowledge of the zoology of that 

 interesting island. 



ZoKAiDA Kirk. 



One of the chief characters of this genus is the narrow face 

 formed by the contiguous lateral keels, which are continuations 

 of the lateral keels of the vertex. Several allied genera have 

 been erected having wider faces, with a carina or a fine groove 

 down the middle. The nymphs of all the narrow-faced Derbi- 

 dae, including Zoraida, have broad faces. In the nymph of Z. 



