Crustacean Fauna of South Africa. 219 
not regularly oval but widest proximally, where it extends upwards as 
a rounded lobe, narrowing gradually distally to almost normal width, 
postero-inferior angle rounded, not extending beyond middle of 3rd, 
hind margin setuliferous, 4th and 5th joints not expanded, 6th longer 
than 5th and equal to anterior margin of 2nd, slender, curved; 7th 
slender, unguis 3 length of 7th; in 2 not remarkably long, 2nd 
expanded, oval a little longer than broad; hind margin evenly convex, 
setuliferous ; 6th equal to 2nd, slender, straight. 
Fifth peraeopod in f reaching only to the end of 5th joint of 
peraeopod 4, 2nd joint strongly expanded, upper posterior angle sub- 
quadrate, not produced upwards, width greatest distally, postero- 
inferior angle rounded, inferior margin transverse, hind and inferior 
margins crenulate and spinulose, 4th and 5th joints not expanded, 
6th equal to 2nd, straight; in ? nearly as long as peraeopod 4, 2nd 
joint expanded similarly to that of peraeopod 4, but as broad as long, 
with a subquadrate upper posterior angle, margin crenulate and 
setulose. 
First and second uropods, rami shorter than peduncle, outer a little 
longer than inner in Ist uropod, rami in 2nd subequal, margins of 
peduncle and both rami spinose. 
Third uropod, ramus a little longer than peduncle, with marginal 
and apical spines. 
Length ; 22 mm. 
Colour : Whitish, eyes dark brown. 
Locality : Dassen Island, West and East Coasts of Cape Peninsula. 
(Dr. W. F. Purcell, R. M. Lightfoot, and K.H.B.) 966, 2 2 and 
young. (S.A.M. Nos. 1256, 1283, A2514, and-A2875.) 
(Plate XXVII. Fig. 32.) 
A curious form of 2nd gnathopod is found in 2 small ¢ ¢ from 
Dassen Island. They measure 10 mm. and show no trace of the 
dorsal spines on the pleon or of the expanded 2nd joint of 4th 
peraeopod. The Ist gnathopod is as described above. The 2nd 
enathopod has the 2nd joint cylindrical and stout but not expanded 
asin 2, 4th rounded below, 5th shorter than wide, 6th twice as long 
as 5th, wider at base and increasing in width distally, where width 
nearly equals the length, palm transverse, rather strongly emarginate, 
the emarginate portion either straight or slightly convex, armed with 
a few spinules, defining lobe rounded, semipellucid, finger straight, 
reaching to base of defining lobe, unguis indistinguishable. 
The exact nature of these specimens it is difficult to determine. 
The series is not very extensive, and all the Dassen Island specimens 
