868 Boruta, Synurella 



1. B. tenebrarum Wrzeän. 1888 B. t., AVrzeäniowski in: Pam. Fizyjogr., v.8 

 (p.72) t.9— 16 i 1888 JS.t, T.Stebbingin: Rep. Voy. Challenger, tJ.29 p.l656 flSdO B.t., 

 Wrzesiiiowski in: Z. wiss. ZooL, u50 p.677 t.28 f. 6. 7, 9, 13, 15, 16; t. 29 f. 4-^6; t. '60 

 f. 1, 2, 4, 6, 15; t. 31 f. 1, 2, 4, 6—13, 15—17; t. 32 f. 2—7, 9 | 1893 B. t, A. Della Valle 

 in: F. Fl. Neapel, f. 20 p. 647. 



Body moderately elongate, pleon segments carrying a few dorsal 

 setules. Head, front corners rather prominent, truncate. Side-plate 4 the 

 largest, emarginate. Pleon segments 1 — 3 (Fig. 84), postero-lateral corners 

 quadrate (figure), sharply pointed (text). Antenna 1 a third of lengtb of body or 

 a little more, 1^* Joint of peduncle subequal to 2*^ and 3'^ combined, tiagellum 

 ouce and a half as long as peduncle, 12- or 13-joiuted, accessory flagellum 2- 

 jointed, shorter than first 2 joints of primary. Autenna 2 much sborter, ultimate 

 Joint of peduncle shorter than penultimate, flagellum not equal these 2 combined, 

 5-or 6-jointed. Mandible, 2^ and 3*^ joints of palp subequal. Gnathopod 1, 

 b^^ Joint little longer than broad, 6*^ once and a half as long as broad, palm 

 almost straight, scarcely oblique. Gnathopod 2, 5*^ and 6*ii joints longer than in 

 gnathopod 1, especially in Q , with palm more oblique ; finger in both gnathopods 

 acute, curved, smooth on concave margin. Peraeopod 4 the longest. Peraeo- 

 pods 3 — 5, 2*^ Joint broadly oval, with serrate margins. üropod 1, peduncle 

 rather longer than rami. üropod 2, peduncle subequal to rami. üropod 3 

 subequal to peduncle of üropod 2, ramus betweenhalf and athirdas long aspeduncle, 

 tipped with a spine. Telson rather longer than broad, emarginate less than 

 V3 of length, the broad apices each armed with 4 spines. Branchial vesicles 

 attached to gnathopod 2 and peraeopods 1 — 5 by a narrow stalk-like beginning. 

 On peraeon segments 2, 3, 6 and 7 and between 1^* pair of pleopod 1 there 

 are pairs of tube-like sacs (accessory branchiae), close together on peraeon 

 segments 7 and 8 and pleon segment 1, but wide apart and close to the 

 side-plates on peraeon segments 6 and 7, these latter being the largest. 

 Marsupial plates very large. Colour pellucid. L. Q over 7, d under 4 mm. 



Northern slopes of Tatry mountains. In wells. 



2. Gen. Synurella AVrzesn. 



1877 Synurella (Sp. un.: S. polonica), (Wrzesniowski in:) Hoyer in: Z. wiss. 

 Zool., ?;.28 p.403 I 1879 Goplana, Wrzeöniowski in: Zool. Anz., u2 p. 299 | 1888 G., 

 T. Stebbing in: Rep. Voy. Challenger, i\ 29 p. 472, 501 | 1890 G., Wrzesniowski in: Z. 

 wiss. Zool, u 50 p. 635 | 1890 (?., Wrzesniowski in: Eiol. Centralbl., v.lO p. 151 | 1893 

 <?., A. Della Valle in: F. Fl. Neapel, v. 20 p. 645. 



Pleon segments 4 — 6 coalesced. Side-plates 1 — 4 much deeper than 

 the following. Eyes with few Clements. Antenna 1 the longer, accessory 

 flagellum 2-jointed. Antenna 2, flagellum in ö calceoliferous. Lower lip 

 with inner lobes. Mandible normal, molar with a long plumose seta. 

 Maxiila 1, inner plate with several (7) setae, outer with 7 spines, some 

 furcate, some serrulate, 2*^ Joint of palp carrying spines and setae. Maxiila 2 

 with few setae on inner margin of inner plate. Maxillipeds, outer plates 

 with few setae, palp long. Gnathopods 1 and 2 similar, subchelate, 6*^^ Joint 

 little dilated. üropod 3 with a Single conical ramus. Telson emarginate 

 or cleft. 



2 species. 



Synopsis of species: 



Telson cleft LS. ambvilans p. 369 



Telson emarginate 2. S. polonica p. 369 



