Airiphipoda baloanioa. 97 



4. Gammarus Iwnjicensis n. sp. 

 (Text fig. 7.) 



The first urosom segment only with the middle gronp 

 of spinules, Pro- and carpopodit of the V^ and 2""^ pe- 

 raeopod with spinules. Epimer of the 2^^^ peraeopod low and 

 broad with a straight margin. Pleon segment 2, postero- 

 lateral corners with spinules not only in the margin but 

 also on the surface. 



This form was found by the author (1907) only in the 

 brook B j e 1 a near Konjice in Hercegovina and is 

 the relative to the G. spinicaudatus. 



5. Gammarus homárehi n. sp. 

 (PÍ. I 8, 8a, 1, 2, 8p 1, 2; text fig-. 8, 9, 10.) 



Eyes crescent-shapes. The 2^"^ antenna and the V^ and 

 2"'^ peraeopod with long hairs, especially with the male. 

 Epimer of the 1. — 4. peraeon segment low. Basipodit of the 

 3. — 5. peraeopod broad. Pleon segment 3, postero-lateral corners 

 quadrangular, acute at the end. Uropod 3, with long rami. 

 Double clefted telson with long setules. Pleon sesrments 1 — 3 

 with 4 fascicles of hairs. Brood plates broad of the pulex type. 



Lives in springs and wells south of the Balkán 

 (Č a m k o i monastery, leg. Komárek, S 1 i v e n, Bélovo, 

 leg. Rambousek) andeast ofRhodope Mountains. 



If we compare our new species witli Gammarus che- 

 vreuxi (Sexton), we can say that the similarity of the 2^^*^ 

 antenna of both, is only a result of a convergence. G. che- 

 vreuxi is a veritable brackish form with a slender and trans- 

 parent body. G. homárehi having a robust but not trans- 

 parent body and the brood (marsupial) plates of this species 

 are broad, those of G. chevreuxi háve very narrow brood 

 plates. 



6. Gammarus pungens M. Edw. 

 (Fig. 11, 12, 13.) 



is a very good species as follows from my former páper 

 (32, 33) Endopodit of this species is very short and the brood 

 plates are narrow. Its y^ pleon segment is with specimens 

 from some localities (Modena) a little pressed from both sides. 



7 



