AMPHIPODA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 227 



Hyale saldanha, sp. nov. (PI. II. figs. 24-29.) 



South Africa, entrance to Saldanha Bay, Station 483 ; 25 fathoms. 21st May 

 1905. Several specimens, males and females, the largest about 9 mm. long. 



Specific Description. Male. Back rounded, not carinate, and without dorsal teeth. 

 Pleon segment three, with postero-lateral corner quadrate with slightly produced point. 

 Eyes of moderate size, round. The first antenna (fig. 24) reaches to the middle of the 

 flagellum of the second ; peduncle with first joint much longer and broader than the 

 second, and produced below at its distal end into a rather broad expansion, which appears 

 to have a vertical flange, and at the lower part of this a thicker conical portion tipped 

 with two setae ; second joint with a smaller similar expansion ; flagellum of sixteen joints 

 all bearing a fairly distinct tuft of long setae at the lower distal angle. Second antenna 

 (fig. 24) about one-third the length of the body ; last two joints of the peduncle sub- 

 equal ; flagellum of about thirty-five joints. First gnathopod (fig. 27) with the basos 

 rather broad except at the base ; the carpus short, triangular, its posterior margin pro- 

 duced into a rounded fringed lobe ; propod oblong, widening slightly distally, front margin 

 convex and smooth, hind margin straight or very slightly concave, with a group of 

 spinules at the centre ; palm oblique, slightly convex, shorter than hind margin, defined 

 by two stout spinules, the finger fitting closely up against the palm. 



Second gnathopod (fig. 28) with basos expanded distally into a flange on the outer 

 margin, ending in a rounded lobe at the extremity ; ischium with a similar rounded pro- 

 cess ; merus short, its apex subacute ; carpus very short, fitting closely into the emargin- 

 ation on the base of propod ; propod large, oval, slightly narrowing distally, its anterior 

 border regularly convex and smooth ; palm oblique, longer than the hind margin, 

 straight except for a rounded process near the base of the finger, fringed with a double 

 row of short spinules and defined by two stout spines ; finger stout, fitting into a small 

 pocket at the end of the palm. Perseopoda one to five robust ; propod slightly curved, 

 especially in the last three pairs, its concave margin bearing at regular intervals three 

 stout spinules of about equal size, all minutely serrated towards the end, but without 

 a specially large serrated spine ; posterior border of propod unarmed ; finger strong, 

 about half the length of the propod, much curved, inner setule very small ; in the third 

 perseopod (fig. 29) the basos is rounded, projecting inferiorly as far as the end of the 

 ischium, in the fourth and fifth similar, but in the fourth the basos is slightly narrower 

 than in the third and fifth ; hind margins of basos in all either smooth or only faintly 

 crenulate. Uropoda short, the first with peduncle about as long as the branches, and with 

 two or three spinules along its lateral margins and a stout curved spine at the distal end ; 

 branches subequal, with lateral and terminal spinules. Second uropod similar, but with 

 peduncle shorter than the branches. Third uropods with the branch rather shorter than 

 the base, both with stout terminal spinules. Telson with a stout spinule on each half. 



Female. Similar to the male, except in the gnathopoda, which are shown in 

 figs. 25 and 26. 



(ROY. BOC. EDIN. TRANS., VOL. XLVIII., 509.) 



