Amp-hipoda balGanica^ 101 



D. Synurella polonica and its relation to the bliud 

 Crangonyx suhterraneus (Sp. Bate.) 



(PÍ. L, fig. 10, PÍ. 11. g; fig. in the text 26—29). 



The discovery of Synurella amhulans (Fr. Muller) iu 

 M o n t e n e g r o in the valley K r i v i do by Prof . Dr. A. 

 Mrázek and that by Dr. B, Soudek in Mor a via near 

 Brno are very interesting. 



I considered the Synurella »polonica« (Wrzes) for a long 

 time a species well separated from S. ambulans (Muller), 

 though L. Keilhack 1909 (22a) spoke for the identity of 

 both species, because the description of the telson, as given 

 by Muller (24a), was very different from this one. 



But recently — thanks to Dr. Schellenberg — I eould 

 examine the Synurella materiál from the neighboiirhood of 

 Berlin and of the lakes of N o r t h G e r m a n y ( Wandlitz, 

 Madú). Though the telson of our speeimens (fig. 27, t) 

 from Mora via and Montenegro is at the top not so broad, 

 as we can see it with the speeimens from North Germany, 

 we could not separate both species from each other, but we 

 must identify both under the name Synurella ambulans (Fi\ 

 Muller); considering the remarkable form of telson, the form 

 from Montenegro could be a speciál local form. 



I háve drawn the whole anály sis of the extremities of 

 Synurella ambulans, to facilitate the future determination 

 of this species. 



To this analysis of Synurella ambulans I liave also 

 drawn the other one of Crangonyx subterraneus (Sp. Bate.) 



As folio WS of the figures the mouth organs and limbs 

 of Synurella, ambulans resemble to the blind species Cran- 

 gonyx subterraneus. 



Today we can corroborate the idea, that both s p e- 

 cies are near related, also from the anatomical point 

 of view with regard to the structure of the antennal gland (PÍ. 

 II.). The nephridial funnels of antennal glands are of cha- 

 racteristical type with the various genera of Gammaridea. 

 But the funnels with Synurella ambulans and Crangonyx 

 suhterraneus are of the samé spherical form. 



