322 



9 The groove down pygophor narrow, posterior edge of pygo- 

 phor slightly emarginate; lateral plates narrow, subequal in width, 

 except at base where it is narrower, apical margin deeply emargi- 

 nate, leaving the corner projecting; ovipositor sheaths narrow. Sim- 

 ilar in color to male. 



Length 3.6 mm.; tegmen 5 mm. 



Hal). Aiii])()ina (type); Pa])na, Laloki River (Miiir). 

 This is tlic siiii])]('st form of the Malay species that I have 

 studied. 



N. iiif/rifroDs sp. iiov. PI. Vr, fii>-. 42. 



^ Width of head including eyes to length of head and thorax 

 1 to 1.6; width of face to length 1 to 2.5; first joint of antenna 

 to second 1 to 2.4; otherwise structurally as in S. neopacificiin. Thorax 

 buckthorn brown, carinae of face and a median mark down thorax 

 and vertex lighter; face between carinae, genae below eyes and 

 clypeus between carinae black; a minute black spot on pleurum; 

 spines on legs and teeth on spur black; abdomen ochraceous orange, 

 genital styles brown. Tegmina hyaline, light buckthorn brown, darker 

 over clavus, veins darker with minute granules, claval margin whit- 

 ish; apical veins blackish spreading into fifth and sixth apical veins. 



The apical corners of anal segment are brought together making 



segment diamond shape, the spines long, thin, ensate and curved; 



aedeagus curved, ensate, slightly flattened laterally, resting between 

 the anal spines. 



Length 2.6 mm.; tegmen 3.5 mm. 



2 Much darker than male, the abdomen nearly all black, tegmina 



darker with most of the veins blackish. Ovipositor sheaths narrow, 



laterally flattened on apical half; groove narrow; lateral plates small, 



inner margin arcuate, entire. 



Length 3.6 mm.; tegmen 4 mm. 



Hah. Formosa, Kaiisliii-ai Oliiir. 191G), swept from 

 reeds. 



S. jKicificiis I\ii'k. 



2 Lateral plates about one-fourth length of pygophor. narrow, 

 edge emarginate at middle, the plate elevated at that point. 



S. a(/(niioj)\//fh(' Ivirk. PI. VI, fi<>'. -TO. 



2 Lateral plates of female nearly half the length of pygophor, 

 narrow, margins entire. 



>^. /)s('ii<li>/)(iclflcns .Muir. I'l. ^"I, fiii'. 45, 



Male genitalia figured, female with apical edge of pygophor 

 medianly emarginate, latero-apical portions forming small, blunt, 

 conical projections; ovipositor sheaths narrow; lateral plates reach- 



