i3» 



DISCOVERY REPORTS 



Remarks. Unlike the northern representatives of this genus, this species apparently 

 has degenerate or very inconspicuous eyes, though the eyes in pallidas, Sars, are feebly 

 developed, and in tenuirostris they are described as faint in alcoholic specimens. As 

 further specific characters of this species may be noted the short process of 5th joint of 

 gnathopod 2, and the strongly expanded joints of peraeopods 1 and 2. 



It is more likely that the specimens recorded by Strauss (1909) as Bathymedon acnti- 

 frons are really this species than that they are referable to Bonnier 's species. 



Monoculodes scabriculosus, n.sp. (Fig. 77). 



Occurrence: 1. St. 140. South Georgia. 4 ovig. ?? 7-8 mm. 



St. 164. South Orkneys. Many $<$, ovig. $? and juv. up to 10 mm. Types. 

 St. 173. South Shetlands. 6?$ (4 ovig.) 8-9 mm. 



St. WS 62. South Georgia. 1 ovig. $ 6 mm., 2 $? 7 mm., 8 juv. 3-5 mm. 

 St. MS 65. South Georgia. 6 ovig. $$ 9-10 mm., 1 $ with embryos 10 mm., 

 3 immat. $$ 6-7 mm., 9 juv. 4-6 mm. 



St. MS 67. South Georgia. 1 ovig. $ 10 mm., 3 $? 8-9 mm., 13 juv. 3-5-7 mm. 

 St. MS 71. South Georgia. 1 ovig. $ 10 mm. 

 8. St. MS 74. South Georgia. 5 ?$ 5-9 mm. 



Description. Integument smooth anteriorly, but on the pleon segments minutely 

 scabrous; the scabrosity formed by close-set triangular (pyramidal) tubercles, and ex- 



2. 

 3- 



6. 



7- 



Fig. 77. Monoculodes scabriculosus, n.sp. a. Gnathopod 1. b. Gnathopod 2. 

 c. Pleon segment 3, with integumentary sculpture further enlarged. 



tending about half-way down the pleura where it gradually disappears. Rostrum rather 

 strongly deflexed, gibbous, but evenly curved. Head not narrowly produced behind 

 eyes. Eyes well developed, dark. Side-plate 1 not strongly expanded in front, 4 slightly 

 deeper than long, posterior margin excavate, lower margin evenly convex. Postero- 

 inferior angle of pleon segment 3 broadly rounded. Telson ovoid, longer than broad, 

 distal margin slightly convex, with two spinules set in notches. 



Antenna 1 reaching to about middle of 5th peduncular joint of antenna 2, 1st and 

 2nd joints subequal, 3rd shorter, flagellum 9-10-jointed. Antenna 2, 4th and 5th joints 

 subequal, flagellum 16-17-jointed. 



