Bruzeüa, Tiroii 275 



2^^ Joint uarrowly oblong, bind mai'gin smootb, 4^*^ Joint ratber large, wide 

 above. acutely produced. Uropod 3, outer ramiis 2-jointed. a little sborter 

 tban inner, in o unarraed, in ö botb rami fringed witb plumose setae 

 on inner niargin, Telson about twice as long as broad at base, distally 

 tapering rapidly, subacute apex minutely bidentate. Colour dark yellowish. 

 L. about 6 mm. 



Arctic Ocean, North-Atlantic, North-Sea and Skagerrak (Norway northward to 

 Lofoten Islands). Depth 150 — 564 m. 



2. B, tuberculata O. Sars 1882 B. t., G. 0. Sars in : Forh. Selsk. Christian., nr. 18 

 p. 95 t. 4 f. 7 i 1893 B. t, G. 0. Sars, Crust. Norway, v. 1 p. 397 t. 139 f. 2 | 1893 B. t, 

 A. Bella Valle in: F. Fl. Neapel, u20 p.668 t. 59 f. 75. 



Body ratber stout and compact. Peraeon segments 3 — 7 and pleon 

 Segments 1 — 3 dorsally raised to obtuse tuberculiform processes. Lateral 

 margins of peraeon segments forming keels, whicb are continued on pleon 

 Segments 1 and 2, and tbere produced into small teetb. Pleon segments 4 — 6 

 dorsally smootb. Head, rostrum alraost vertically deflexed, acurainate, over- 

 lapping 1*"^ Joint of antenna 1. * Side-plates smaller tban in B. typica. Pleon 

 Segment 3, postero-lateral angles more book-like, witb lower margin coarsely 

 serrate. Eyes represented by rounded patcb of whitish pigment at base of 

 rostrum. Antenna 1 in 9 , 1^* Joint sligbtly curved, flagellum sborter tban 

 peduncle, 6-jointed, accessory flagellum as long as tbe 1^* Joint of flagellum, 

 2-jointed. Antenna 2 in 9 ratber longer tban antenna 1, ultimate and penultimate 

 joints of peduncle subequal, flagellum about balf as long as peduncle, 6-jointed. 

 Gnatbopods 1 and 2, peraeopods 1 and 2 as in B. typica. Peraeopods 3 — 5 

 ratber strong, not very unequal, 2*^ Joint seiTate on bind margin and in 

 peraeopod 5 very broadly oval, 4*^ Joint also much expanded above. Uropods 1 

 and 2 nearly as in B. typica; uropod 3, rami scarcely longer tban peduncle, 

 botb unarmed. Telson more tlian twice as long as broad, sligbtly constricted 

 uear base, distally tapering to an acute simple point. Colour light yellowish 

 witb large irregulär patches of diffuse brick-red. L. 9 6 mm. 



Arctic Ocean and North-Atlantic (Lofoten Isles, Bejan in Trondhjemsfjord). 

 Depth 188— 564 m. 



2. Gen. Tiron Lillj. 



1865 Tiron (Sp. un. : T. acdntlmrus), W. Lilljeborg in: N. Acta See. IJpsal., ser. 3 

 u6 nr. 1 p. 19 I 1876 T., A. ßoeck, Skand. Arkt. Amphip., r. 2 p.475 ] 1893 T., G. 0. 

 Sars, Crust. Norway, v.l p. 398 | 1893 T., A. DellaValle in: F. Fl. Neapel, u 20 p. 693 | 

 1866 Syrrhoe (part.)?, Goes in: Öfv. Ak. Förh., ».22 p. 527 | 1868 Tessarops (Sp. un.: 

 T. hastata) (non Hafinesque 1821, Arachnoidea!), A. M. Norman in: Ann. nat. Hist., ser. 4 

 V.2 p.412. 



Body not robust or indurated. Head, rostrum of moderate length. 

 Side-plate 4 less deep tban 3^. Eyes 4, a subdorsal pair. and a minute 

 lateral pair. Antenna 1 witb long accessory flagellum.- Antenna 2 longer tban 

 antenna 1. Upper lip rounded, bilobed, carinate. Lower lip witb inner iobes. 

 Mandible nonnal, molar large and prominent, palp slender, 3^ Joint scarcely 

 longer tban 1^*. Maxiila 1, inner plate witb many setae, outer witb 11(?) spines, 

 palp long. Maxiila 2, inner plate fringed on innw margin, outer ratber 

 narrower. Maxillipeds normal. Gnatbopods 1 and 2 long, setose, b^^ Joint 

 naiTow, much longer tban tbe linear simple 6*^, finger small. Peraeopods 

 Short and stout, 2*^ Joint much expanded in peraeopods 3 — 5, especially in 



18* 



