— 28 — 



are small, not much longer than itself, slightly diverging, of 

 black colour. The lateral spines are short, blunt, of black- 

 brown colour. On the mesothorax there are two pairs of ten- 

 der, black setae. The anterior pair is smaller and situated 

 anteriorly to the point of attachment of the wings, laterally 

 to the fissure of the mesothorax. The second pair of setae is 

 a little behind and medially from the point of attachment of 

 the wings. Lastly, the scutellar spines are also provided with 

 setae which are somewhat longer than the former, but shor- 

 ter than the posterior mesothoracic setae. 



The coxae are browm-yeUow. The general colour of the 

 femora is like that of the coxae. The fore femora are swollen. 

 The fore pair of tibiae is dark black-brown, the middle pair 

 is lighter; the hind femora are of the same colour as the 

 middle only the middle third is lighter, in the shape of a light 

 band. The tarsi are of a uniform red-brown colour, only the 

 first segment of the fore tarsi is a little darker than the rest. 



The wings are translucent with a slight obscurity at the 

 tips. 



The shape and ground-colour of the abdomen is very dif- 

 ferent in <S and $. The ground-colour varies also in the same 

 sex, and only certain definite elements of the drawing, e. g., 

 spot of a bluish tint, are repeated (fig. 2). 



The ground-colour of the abdomen in the male is black. 

 In the female the ground-colour is either monotonous dark 

 brown (fig. 2_i), or it is in addition spotted more or less regu- 

 larly with light brown (1 spec); or, lastly, these spots expand 

 and become more sharply limited from the dark parts, so 

 that the abdomen obtains it characteristic drawing (fig. 2±). 

 The lower, ventral side of abdomen is dusky gray-yellow and 

 the dark colour of the dorsal side passes at the posterior 

 margin of each segment to the ventral side in the shape of 

 triangles with an obtuse interior angle. 



6 specimens, 2 cf c? and 4 ?$. from river Lumi, 4. VIII. 



Diasemopsis silvatica n. sp. 



Fig. 3 ?. 



Length 6 mm. Width of head with eyestalks 57* nim. 

 The species is related to J), concolor Wstw. The ground 

 colour of the head aud eyestalks is red-brown. The front is 



