Syrrhoe 283 



plates and other parts coral-red, antennae and limbs banded with orange. 

 L. c 10 mm, ö less. 



Aretic Ocean, Nortli-Atlantic, North-Sea and Skagerrak (Greenland, Spitzbergen, 

 Nonvay). Depth 38—188 in. 



L'. S. semiserrata Stebb. 1888 S. s., T. Stebbing in : Kep. Voy. Challenger, 

 /•.29 i).793 t.51 1 1893 S. s., A. DellaValle in: F. Fl. Neapel, v.20 p.663 t.59 f. 72, 78. 



O unknown. — ö. Peraeon segment 7 and pleon segments 1 and 2 

 dorsally produced into a small tootb. Head strongly vaulted in front, 

 i>)strum carinate, reaching beyond middle of P* Joint of antenua 1. Side- 

 plates 1 — 4 nearly as in S. crenulata. Pleon segments, postero-lateral 

 angles in 2'^ a little produced, acute, in 3* not produced, bind margin 

 above cut into 8 upturned teeth not nearly reaching the unserrated dorsum. 

 Eyes as in S. crenulata. colour not kuown. Anteuna 1, l^^ Joint thick, 

 longer tban 2^ and 3*^ combined, 1*** Joint of flagellum nearly as long as 

 peduncle, densely friuged, accessory flagellum about as long as 1^* Joint of 

 primary, slender. serrate, setae along one side and spines along the other. 

 Antenna 2, ultimate Joint of peduncle much more than twice as long as penulti- 

 mate, peimltiniate nearly twice as long as antepenultimate. flagellum with at 

 least 20 joints, whicb are slender, not short. Mandible. 3 spines in spine-row. 

 Maxillipeds, outer plates friuged with 11 spines. Gnathopod 1, 5*^ Joint 

 fusiforra, nearly twice as long as 6*'', which widens a little distally, spinulose 

 along bind margin, palra short, setose, the palmar spine with blunt process 

 near tbe base and 7 oblique denticles on its concave margiu. finger short, 

 booked, stout at ))ase. Gnatbopod 2, 3*^ Joint longer than 4*'\ 5*'^ naiTOw, 

 slightly beut, nearly twice as long as 6*^, which scarcely widens distally, 

 bind margin spinulose aud finely pectinate, palmar spine without the blunt 

 process. Peraeopods 1 and 2 very slight. Peraeopods 3 — 5, 2^ Joint not 

 very large, tbe serration not coarse. Uropod 1, peduncle longer tban rami, 

 outer ramus mucb shorter tban inner; uropod 2, outer ramus uarrow, longer 

 tlian inner ramus of uropod 1, inner ramus very long, broad, spinöse on both 

 margins; uropod 3, rami long, lanceolate, friuged with setae on inner 

 margin, outer a little the shorter, with small 2<^ Joint. Telson long, deeply 

 ■cleft. character of apices uncertain. L. 7*5 mm. 



Bass-Strait. Depth 60 ni. 



3. S. papyraeea Stebb. 1888 S.p., T. Stebbing in: Rep. Voy. Challenger, i:.29 

 1). 789 t. 50 I 1893 S. p., G. 0. Sars, Crust. Norway, v. 1 p. 390 ! 1893 S. crenulata 

 <part.), A. DellaValle in: F. Fl. Neapel, n 20 p.663. 



Peraeon segment 7 aud pleon segments 1—4 dorsally serrate, the 

 central tootb most prominent on pleon segment 2. Head produced and 

 sharply curved at base of sharp-edged rostrum. Side-plates 1 — 4 nearly 

 as in S. crenulata, but 3*^ with a more quadrate bind lobe. Pleon segments 2 

 and 3, postero-lateral angles acutely produced, more strongly in 2^ than 3*^, 

 margin above not denticulate. l^^yes not perceived. Antenna 1 in 9 , 

 1^* Joint witli no large apical tootb, 2*^ Joint rather shorter than P*, 3<* than 

 2<^, flagellum longer tban peduncle, with 15 joints or more, 1**^ longest, 

 accessory flagellum with 2 long joints aud 1 very short. Antenna 2 much longer, 

 ultimate Joint of peduncle as long as the short antepenultimate and long pen- 

 ultimato combined. flagellum shorter than peduncle, with 18 unequal joints. 

 Mandible, spiue-row of 6 spines. Maxillipeds, outer plates friuged with 16 spines, 

 3*^ Joint of palp longer than in tbe other species, finger with a nail as long 



