98 



Deutsch. Ent. Zeitschr. 1922. 



Thorax: black, densely pruinosed with bluish grey, without 

 color patterns ; w i n g s hyaline , nervures fine and blackish, 

 pterostigma moderate in length and blackish in color ; fore 

 wing with 8 and bind wing with 6 antenodals ; 1 e g s slender, 

 long , black in color , only the coxa , trochanter and the inner 

 part of femur in the first and second pair yellowish. 



Abdomen: likely colored as thorax, also pruinosed, very 

 slender, only thickened at the base, segments 7 and 8 being more 

 or less broader. Upjper anal appendages scarcely longer than the 

 terminal 2 segments , slender , curved gradually npwards at the 

 tips, black, but the base brownish, poorly haired; lower appen- 

 dage nearly so long as the upper, brown with black tip ; genital 

 hamules as shown in the figure. 



F e m a 1 e. H e a d : very similar to that of male. 



Thorax: yellow, somewhat pruinosed ou the sterna ; with 

 black bands and streaks arranged as follows : a broad one on the 

 frontal suture of mesothorax, the next narrower one runs from 

 just below the scapula to the coxa of the second leg. third ones, 

 being the narrowest, on the two lateral sutures. 



Abdomen: moderately slender, orangy on dorsal side and 

 yellowish on lateral, while darky on ventral sürface ; median dorsal 

 and transverse carinae black. On segments 2—7 with black 

 transverse band on posterior niargin and a longitudinal marking 

 of the same color on each side, by the latter markings the orangy 

 dorsal part separates itself from yellowish lateral part ; segment 8 

 nearly wliole, and 9 and 10 entirely black ; no prominent vulvar 

 Scale present. 



Nom. Jap.: Naniwa-tombo. 



Loc. : Furumachi (Arimoto), Wakayaraa (Isshiki), 

 Osaka (S h i b a k a w a). 



This species shows some resemblance to Diplacodes trivialis in 

 its coloration ; but the structure of the wing is different from 

 the latter. By the extremely slender form of abdomen it will 

 sharply be distinguished from any other species of this genus. 

 It occurs according to Mr. Shibakawa always near the ponds, 

 being never found in any other parts as fields or forests , where 

 the other species of this genus are so frequently met with. 



Sympetruvi m acuta tum sp. nov. (PI. 11, Fig. 5, 6.) 



Abdomen 21 mm; bind wing 25 mm; pterostigma 2,3 mm. 



Male. H e a d : tolerably large ; frontal tubercle yellowish 



above, smoky below ; face haired, deep chrom-yellow with a large, 



.shining black patch on frons, it is quadrate in shape and melts 



