226 



Petersen, H. Sauter's Formosa-Ausbeute. 



pubescence on the dorsum of thorax dark brown, becoming greyish 

 white on the venter. 



Abdomen dorsally brownish black with the exception of a pale brown 

 dorsal stripe on the four basal segments; the venter is strong yellow 

 at the basü, becoming more brownish towards the apex. The appen- 

 dices anales very short. Legs black, blackish haired; the innerside of 

 fore tibiae shortly dark brownish haired. Wings hyaline; all nervures 

 black. The pterostigma dark brown with 4 — 5 cross veins. 



Length of body 

 6 40 mm; fore wing 36 mm; hind wing 29 mm; antennae 27 mm, 

 $ 35 mm; „ „ 38 mm; „ „31 mm; „ 24 mm. 



There are present 1 cS from Kankau (Koshun), IV. 1912 and 

 2 9 2 from the same locality, V. 1912. 



The fomale is coloured as the male with the exception of the 

 face, which is dark brown with paler eye-margin, but that is probably 

 due to immaturity. 



Fig. 5. 

 Suphalomitus 

 formosanns $ 



Fig. 6. 

 Suphalasca 

 umbrosa S 



Suphalasca umbrosa nov. spec. 



Labrum pale brown. Face and vertex densely haired with long 

 greyish white hairs on the face and long greyish brown between the 

 antennae and on the vertex. Antennae brown, darkest towards apex 

 and dark annulated at the joinings; the club broad, excavated on the 

 underside, which is paler of colour timn the overside. Thorax almost 

 as broad as the head, chocolate brown with yellowish dots on the 

 venter and with indication of a longitudinal, yellowish brown, median 

 streak on the dorsum. The colour of the pubescens greyish brown 

 on the dorsum, whitish on the venter. Abdomen blackish brown; 

 the three or four basal segments dorsally with a small lunate yellowish 

 brown marking at each side and near to the hind margin, ventrally 



