— 22 — 



(?) 3. Diopsis fumipennis Wstw. „ 1 $ 



4. „ tenuipes Wstw. Chala 2 <^d 



5. „ thoracica Wstw. „ 1 (^?) 



6. „ sulcifrons B e z z i. Mabira 1 ? 



7. Diasemopsis varians n. sp. Chala 2 cfd' 4 $? 



8. „ silvatica n. sp. Mabira 1 $ 



9. „ incerta n. sp. „ 2 cfc? 

 10. „ ptdchella n. sp. „ 1 c? 1 $ 



Diopsis ichneumonea L. 



This is the first species ofDiopsidae that became Icnowii^ 

 and Avas already described by Linnaeus. Unfortunately, the des- 

 cription and drawing of Linnaeus are not sufficient for cha- 

 racterising the given species and some characters of this 

 species are interpreted by different authors in their own way 

 which leads to many misunderstandings. 



In ray material there is a form which may be referred to 

 D. ichneumonea L. On account of what was said above, I con- 

 sider it necessary to give its description. 



My specimen differs from the type of L i n n a e u s in .darker 

 antennae, in the black colour of both ends of the first, long 

 abdominal segment, and in a brownish tint on the wings. 

 These characters are so insignificant, that they cannot in any 

 way serve as a basis sufficient for distinguishing this form as 

 a distinct species; in the most, we may be dealing with a local 

 variety. On the other hand, if we consider the given form as 

 identical with D. ichneumotiea of Linnaeus, we shall be 

 able to state those characters not mentioned by Linnaeus, 

 which led to disputes between W e s t w o o d and D a 1 m a n, 

 viz.: the black neck, brownish-red first abdominal segment 

 and whitish halteres. 



The only specimen is evidently a male, from Mabira, 12. VIL 



Diopsis finitima n. sp., 



(Fig. 1, d^). 



This species is very near to D. apicalis Dalm., but in 

 certain peculiarities it differs from all the representatives of 

 that group of Diopsidae which are so difficult to distinguish 

 one from another and which all resemble the type apicalis 

 Dalm. so much. 



Length 7 mm., width of head with eyestalks 6V3 mm., 

 length of wings 5^/4 mm. 



