332 Nototropis 



little spinulose hump. Kosti'um rather long, witb rounded end. Eyes reiii- 

 form, of moderate size in 9, very large in ö, almost meeting at the top 

 of the liead. In peraeopod 3 the lower bind corner much less distinctly 

 uucinate thau in N. vedlomensis (p. 331); in peraeopod 5 the 2^ Joint not 

 very broad, with the produced point not acute. Branchial vesicles of peraeo- 

 pod 5 and to some extent tbose of peraeopod 4 simple, but tbose of gnatbopod 2 

 and peraeopods 1 — 3 remarkably developed; tbeir nuraerous distiuct lobes 

 approacbing to tbe phyllobrancbiate structure. Colour reddisb white or 

 yellowisb, with 3 loiigitudiual series of railky white spots ou each side, 

 and witb various little broken snuff-coloured lines. L. about 10 mna. 



Mediterranean ; Bay of Biscay (Vicero [North of Spain]); Black Sea? 



5. N. nordlandieus (Boeck) 1871 Atylns n., A. Boeck in: Forh. Selsk. Christian.. 

 1870 p. 193 I 1876 A. n., A. Boeck, Skand. Arkt. Amphip., v. 2 p. 332 t. 23 f. 2 ! 1893 

 Paratylus n., Gr. O. Sars, Crust. Xorway. v. 1 p. 469 t. 165 f. 2 | 1893 Atylus suammer- 

 (lamii (part.), A. DellaValle in: F. Fl. Neapel, u 20 p. 698. 



Body as in N. vedlomensis (p.331), but with peraeon segmeut 6 also toothed; 

 head also similar, but rostrura more prolonged, reaching beyond middle of 

 1^* Joint of antenna 1, nearly horizontal. Side-plates 1—4 rather deep, 1^* and 

 2*^ rather narrow, distal margin seiTate and setose, 3^ and 4^^ distally rounded. 

 serrate, 4*^ not emarginate, 5*^ with front lobe narrowly rounded. Pleon 

 Segment 3, postero-lateral corners subquadrate, with small produced point 

 and margin above slightly crenulate. Eyes very small. rounded, red. 

 Antenna 1 in o about ^/g as long as body, 1^* Joint a little shorter than 2^, 

 flagellum little ionger than peduncle, 12-jointed. Antenna 2 rather longer,, 

 ultimate Joint of peduncle little longer than penultimate, flagellum as long 

 as both combined. Gnatbopod 1, b^^ and 6* joiuts equal, 6*^ oblong oval, 

 palm ill-defined. Gnatbopod 2 much longer, 6*^ Joint shorter than elongate 5*^, 

 slightly widened distally. Peraeopods 1 and 2, 4^^^ Joint as long as 5*'^ and 

 6*^ combined, 5*^ much shorter than 6*^ Peraeopod 3. 2*^ Joint with lower 

 bind angle acutely produced, 5*^ rather longer than 4^^ or 6***. Peraeopod 5, 

 2^ Joint very wide, lower bind angle acutely produced. Branchial vesicles 

 pleated. Uropod 3, rami nearly 3 times as long as peduncle. Telsou 

 longer than broad, cleft % length, slightly dehiscent, apices obliquely truncate^ 

 armed with spinules and 2 setules. Colour dark yellowish grey, with row 

 of obscure orange spots. L. Q scarcely 8 mm. 



Arctic Ocean, North-Atlantic, Noi-th-Sea and Skagerrak (Norway northward ta 

 Hasvig [West Finmark]). Depth 94—188 m. 



6. N. smitti (Goes) 1866 Paramphithoe s., Goes in: Öfv. Ak. Förh.. r.22 p. 524 

 t.38 f. 14 i 1871 Atylus s., A. Boeck in: Forh. Selsk. Christian., 1870 p.l90 | 1876 A. s., 

 A. Boeck, Skand. Arkt. Amphip., i'.2p.326 ; 1887 A. smittii, H. .J. Hansen in: Dijinphna 

 Udb., p. 223 1 1894 A. smitti, T. Stebbing in: Bijdr. Dierk., r. 17 p. 35 | 1893 Para- 

 tylus s., P. smithi, G. 0. Sars, Crust. Norway, v. 1 p. 468; t. 165 f. 1 \ 1893 Atylus 

 swammerdamii (part.), A. DellaValle in: F. Fl. Neapel, «.20 p. 698. 



Body Mghly compressed, very distinctly carinate, peraeon Segments 5 — 7 

 and pleon segments 1 — 4 produced to compressed teeth, the size at first 

 small but encreasing successively to that on segment 4, which is preceded 

 by the usual notch. Head, rosti-um soraetimes reaching end of P* Joint of 

 antenna 1, lateral margin sinuous, forming below a deflexed lobe defined 

 by a notch, post-antenual corners not produced. Side-plate 1 narrow. 

 beut forwai'd, distally a little widened and sen-ate, 2^ narrow, 3*^ and 4^^^ 



