186 



Metopoides 



decuiTent, 2"^ Joint more expanded in peraeopod 5 than in 4. üropod 3, 

 2** Joint of ramus shorter than 1^*. Telson twice as long as broad, distally 

 tapering to acute apex, 3 spines on each luargin. L. Q 5 mm. 



Strait of Magellan (Cape Virgins). Dejith 100 m. 



2. M. parallelocheir (Stebb.) 1888 Metopa p., T. Stebbing in: Rep. Voy. 

 Challeuger, r.29p.762 t. 43 im^M.p., Metopoidesp., A. DellaValle in: F. Fl. Neapel, 

 V.20 p. 642, 907, 938; t. 59 f. 59. 



Head, lateral corners little produced. Side-plate 3 of uniform breadth. 

 Pleou Segment 3, postero-lateral corners quadrate. Eyes round. Antenna 1, 

 3"^ Joint half lengih of 2*\ flagellura shorter than peduncle, about 8-jointed. 

 Antenna 2 as in precediug species. Maxillipeds, inner plates not very 

 large. probably not separate except at apex, outer plates triangulär, on joints 

 whieh are broad but not elongate. Gnathopod 1, 6*'^ Joint rather long and 

 narrow, palm almost smooth, extremely oblique and ill-defined except by 

 ending of spiue-row, tinger fiuely pectinate, a denticle at base of the nail. 

 Gnathopod 2, 5**» Joint cup-like, much shorter than the long band, which 

 has front and bind margins almost parallel, palm short but oblique, detined 

 by a tooth and group of spines, finger short, curved. Peraeopods 1 — 5, 

 4**^ Joint rather long, wider and more decurrent in peraeopods 3 and 4 than 

 in 1 and 2. Uropod 3, 2'^ Joint of ramus a little shorter than 1^*. Telson 

 long oval, apex not very acute, 2 spines on each margin. L. 3*5 mm. 



Strait of Magellan (Cape Virgins). Depth 100 in. 



3. M. oompactus (Stebb.) 1888 Metopa compacta, T. Stebbing in: Rep. Voy. 

 €hallenger, ^'.29 j). 767 t.45 | 1893 M. c, Metopoides compactus, A. DellaValle in: F.Fl. 

 Neapel, v. 20 p. 644, 907, 938. 



Head, lateral corners a little prominent. Side-plate 2 broad, semi- 

 circular, 3^ oblong, 4*'ibroader than deep. Pleon segment 3, postero-lateral 

 <^orners obtusely quadrate. Eyes round. Antenna 1, 3*i Joint louger than 



half 2^, flagellum shorter than peduncle, 10-jointed. 



Antenna 2 little longer than antenna 1, penultimate 

 -- 7"' Joint Joint of peduncle rather longer than ultimate, flagellum 



8-jointed. Mandibular palp with 2^ Joint broader and 



'6^ a little more developed than usual in this faraily. 



Maxillipeds (Fig. 49), inner 



plates rather large. Sepa- 

 ration doubtful, outer plates 



apically rounded, the sup- 



porting Joint almost as broad 



as long. Gnathopod 1, 4*^^ 



and 5**1 joints strongly armed 



with pectinate spines, 5*'' 



as long as 6***, which widens 



to the convex, rather oblique, 



finely pectinate and denti- 



culate palm, forming obtuse 



angle with bind margin and 



detined by a row of spines: 

 finger pectinate. Gnathopod 2 (Fig. 50). o^^ Joint cup-like, rather shorter than 

 the stout oblong 6**^, palm very little oblique, sinuous, denticulate, defined 



Fig. 49. 



M. compactus. 

 MaxiUipeds. 



6"' 5"' Joint 

 Fig. 50. M. compactus. 

 Gnatliopod 2. 



