490 Prof. F.. Klapalek’s descriptions 
before the base of the wings is a small oblong yellow spot ; 
the scutellum has in the middle a yellow point, hinder edge nar- 
rowly reddish-brown. 
Coxe and trochanters black ; on the anterior and middle femora 
the base and outside, except a short space on the apex, is black, 
the innerside, except the base and the apex, yellowish-brown. 
Posterior femora with exception of the yellowish-brown apex 
black. Tibie yellowish-brown, tarsi yellowish-brown, fuscescent 
at the apex. Abdomen shining black, with a narrow yellow lateral 
line ; the intermediate segments narrowly margined with yellow 
posteriorly at the sides, and on the middle of the posterior margin 
beneath. The 7th abdominal segment short, the 8th divided into 
a dorsal and ventral valve ; the first of them is longer than the 
foregoing segment, quadrangular if viewed from the side, under 
the thickened side margins swollen on either side into a shining 
black smooth hemispheric lobe ; the ventral valve, directed down- 
ward, has the apical margin notched, thickened and fuscous. 
On the innerside of this valve lie two testaceous crotchets 
directed against the apical margin and slightly curved inwardly. 
Under these crotchets lies the penis, which is canaliculated beneath. 
The 9th segment is widely opened and slightly notched on the 
hindmargin, which is yellow ; the hinder angles strongly thickened 
and beset with black spines. 
Anterior wings three times as long as broad, with elliptical apex, 
pellucid. Two cells along the radius from the origin of the 
sector and three discoidal cells. Costal area dilated in the first 
third, with 11-12 simple veinlets. Subcosta joins the costa at a 
distance from pterostigma equal to two-thirds of its anterior mar- 
gin. Pterostigma trapezoid, dark-brown, with a single simple 
veinlet parallel with its outer margin ; its inferior margin scarcely 
half the length of the superior. First discoidal cell begins at the 
same distance before the pterostigma as is the termination of the 
subcosta, and extends very little beyond its hindmargin. Four 
cubital cells. First apical vein simply furcated ; the second thrice 
furcated ; the third divided into two branches ; the fourth furcated 
twice ; and the two next following are divided into three branches. 
Posterior wings in the costal area with 8-10 transverse veinlets. 
Cubitus with one branch anteriorly, and in the area between the 
sector radii and the anterior branch of cubitus there is only one 
transverse veinlet. 
2 unknown. 
Exp, 23°5-25 mm., long. 11°5 mm. 
By the structure of wings R. rhodopica is near to R. 
