AMPHIPODA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 183 



These agree well with the descriptions and figures given by STEBBING, except that 

 the larger ones contain rather more joints in the flagella of the two antennae. In the 

 second antenna of the male the flagellum is long, . about two- thirds the length of the 

 animal, and the last joint of the peduncle is longer than the preceding joint, which is 

 rather short. In the second maxilla the inner lobe is specially broad and has the inner 

 margin pretty strongly convex. The second gnathopod has the palm a little projecting 

 so as to approach towards the chelate character. The uropods agree well with the 

 description ; the character of. the peduncle of third uropocl seems fairly characteristic, 

 and is shown in fig. 5. Its outer margin is produced upwards into a vertical flange 

 above the general body of the joint ; it curves upwards at the end into a subacute 

 point, and bears three short spinules on the distal half of the upper margin. The two 

 branches are similar in shape, both tapering to the extremity ; the outer is slightly 

 longer than the inner, and bears a few long hairs at a little distance from the end. 



The species was originally described from specimens in the Copenhagen Museum, 

 coming from the Gulf of Mexico. 



Genus ALICELLA Chevreux, 1899. 

 Alicella scotise, sp. nov. (PI. I. figs. 6 and 7.) 



Station 468, South Atlantic, lat. 39 48' S., long. 2 33' E. ; 2645 fathoms. 

 2 9 th April 1904. One specimen, 20 mm. long. 



Integument soft, the body greatly swollen about the middle, tapering considerably 

 posteriorly. The hinder half of the body somewhat compressed, with a slight dorsal 

 ridge, but hardly carinate. Side plates 1-4 increasing in depth, the fourth with its 

 posterior lobe extending about one-third along the fifth, which is shallower than the 

 fourth and broader than deep. Lateral plate of the first pleon segment angular in 

 front but rounded behind, its lower border fringed with long setae ; that of the second 

 segment with both angles rounded ; the third with the anterior rounded, posterior 

 angle quadrate, both bearing plumose setae on the lower margin. Sides of the third 

 segment of the urus upraised alongside the telson. Eyes indistinct, apparently forming 

 a narrow crescentic band along the lateral sides of the head. 



Antennse slender, first shorter than the second, about as long as the head and the 

 first segment of the peraeon, the first joint short and thick, as long as the second and 

 third together, the third very short ; flagellum of about twenty joints, the first as long 

 as the next five and supplied on the inner side with dense tufts of long setae, similar 

 setae being present also on a few of the succeeding joints. Accessory flagellum nearly 

 half as long as primary ; of six joints the first as long as the next two. 



Second antenna with third joint well exposed ; the fourth with long, rather stout 

 setules on the lower margin ; fifth slightly longer than the fourth, with long slender 

 setae on lower margin ; flagellum many-jointed, of about thirty-five joints, all except 

 the more distal ones bearing a small tuft of long setae at the lower distal angle. 



(ROY. soc. EDIN. TRANS., VOL. XLVIII., 465.) 



