LYSIANASSIDAE 39 



proximal hump, but not carinate. Telson short, oval, with a short apical notch, an apical 

 spinule on each lobe. 



Antenna 1, flagellum 9-jointed, accessory flagellum 5-jointed. Antenna 2, flagellum 

 8 -jointed. 



Epistome straight, upper lip produced in an acute, slightly upturned, process. 

 Mandible, molar moderately strong, palp attached above molar or above its posterior 

 margin, but not behind it. Maxilla 1, outer lobe with 7-8 serrulate spines, palp ex- 

 tending beyond apex of outer lobe, moderately slender, apex with four short stout 

 spinules and a seta. Maxilla 2, both lobes nearly equal in length and moderately slender. 

 Maxilliped, inner plate with two apical short spinules, outer plate with smooth margin. 



Gnathopod 1, 6th joint nearly as long as (upper margin) 5th, slightly tapering, palm 

 short, oblique, defined by a rather long slender spine and a seta. Gnathopod 2, 6th 

 joint half length of 5th, narrow ovate, minutely subchelate. 



Peraeopods 1-5 slender, 2nd joint in peraeopods 3-5 ovately expanded, longer than 

 wide, hind margin serrulate, 4th joint moderately expanded in peraeopod 3, but less so 

 in peraeopods 4 and 5. 



Uropod 2, rami slender acuminate, inner ramus constricted. Uropod 3 rather stout, 

 rami a little longer than peduncle, outer ramus slightly longer than inner, its 2nd joint 

 two-thirds length of its 1st joint. 



Distribution. Falkland Islands. 



Genus Lysianassa, M. Edw. 

 Stebbing, 1906, pp. 37, 718. 



Lysianassa variegata (Stmpsn.). 



Stebbing, 1888, p. 682, pi. xxiii and 1910 a, p. 449. 



Occurrence:!. St. 90. South Africa. 2 ?? 9-10 mm. 



2. St. 91. South Africa. 2 $$ (1 ovig.) 7-5 mm. 



Distribution. South Africa (False Bay to East London). 



Lysianassa falklandica, n.sp. (Fig. 7). 



Occurrence: 1. St. WS 85. Falkland Islands. 1 $ 7 mm. Type. 



2. St. WS 97. Between Falkland Islands and South America. 2 ovig. $$ 9 mm., 

 1 immat. 6-5 mm. 



Description. Integument indurated. Head, peraeon and pleon dorsally with 

 minute scattered setules. Head with antero-lateral angle quadrate or subacute. Eyes 

 rather narrow oval-reniform, brown. 



Side-plates 1-4 deep, 1 slightly expanded forwards, 4 not strongly excavate, the 

 excavation evenly rounded. 



Pleon segment 4 with dorsal profile slightly excavate in middle; postero-inferior 

 angles of segment 1 rounded, of 2 quadrate, of 3 produced backwards in a rounded lobe. 



Telson longer than wide, distal margin truncate or feebly excised, a spinule on each 

 apex. 



