169 



Wings hyaline with a faint yellowish brown tinge at 

 base and in the costal and subcostal areas with a strong 

 yellowish tinge, which becomes somewhat greyish brown 

 in the pterostigmatical area. Costa, subcosta and base of 

 radius brownish yellow; 2nd, 3rd and the following anal 

 veins and the intercalar veins between 1st and 2nd anal 

 veins yellowish; all the other longitudinal veins dark 

 brown. The cross veins in the pterostigmatical region 

 simple or one or two forked. 



In the female the thorax anteriorly is paler brown 

 above; posteriorly darker brown or blackish. 



The species has some resemblance 

 to Rh. germanica Etn., which I only know 

 from the description of Eaton, but it is 

 easily separated from it by its smaller 

 size and the yellowish nervation of the 

 wings. 



The body of the fullgrown nymph is 



much depressed. Head at least as broad ^'S- ^• 



as the thorax. Eyes dorsally placed. Head Claws of the larva of 



■' -' ' a. Rh. iissingi, 



blackish brown above; ocelli yellowish; b. Ecd. volitans, 



antennae yellowish, basal joint long and ^- ^'^P^- sulpluu'ea. 

 dark brown. Thorax pitchy brown with a narrow yello- 

 wish median streak; sheaths of wings pitchy brown. Ab- 

 domen blackish above. Three setæ of equal lenght, brown 

 at base with yellowish joinings and becoming yellowish 

 towards the apex. Venter of thorax yellowish, of abdo- 

 men blackish grey at base, darker at apex; each segment 

 with a straight blackish (whitish in immatured nymphs) 

 streak near to and parallel to the hind border. Legs 

 yellowish brown; femoræ compressed, with a brim of 

 bristles along their upper side and a few short bristles 

 along their underside; their outer side brownish with a 

 yellowish spot near the base and another in the middle. 

 Tibiæ yellowish towards the tips with yellowish spurs at 

 apex. Tarsi with one joint, yellowish, dark brown at 



