260 Annals of the South African Museum. 
2nd gnathopods in ? orange-brown, eyes faint, of the same colour as 
body. 
Locality : Sea Point, near Cape Town. 15 and 29/11/13. (K.H.B.) 
36d, 2 2 (with ova and embryos) and immature specimens. (S.A.M. 
No. A2894.) 
MACROPISTHOPOUS n. g. 
Side plate 1-5 weli developed, 5 as deep as 4, with small hind-lobe. 
First antenna without accessory flagellum. Outer lobe of lower lip 
deeply notched, the outer portion smaller than the inner. Molar well 
developed, palp of mandible with 3rd joint shorter than 2nd. First 
and second gnathopods similar in both sexes, 6th joint not enlarged, 
very feebly chelate. Sixth joint of peraeopods 3-5 not strongly 
expanded apically. Fifth peraeopod enormously enlarged, flattened, 
oar-like. Rami of 3rd uropod short, outer with 2 hooks. Telson 
with the lateral angles nearly apical. 
MACROPISTHOPOUS STEBBINGI N. sp. 
(Plate XXVIII. Figs. 15-17.) 
Body fairly compressed, back rounded, smooth, lateral lobes of head 
not prominent, eye round. Side-plates 1-5 ovoid, rounded below, 
increasing in length and slightly in depth, a short row of long setae 
on postero-inferior angle, 6 shallow, bilobed, 7 shallow, semicircular. 
Pleon-segments 1—3 with postero-inferior angles rounded. 
Telson triangular, broader than long, apex shortly truncate with a 
small tubercle at each angle and 2 large and 2 small setae between 
them, | large and 1 small seta in the middle of lateral margin. 
First antenna reaching to end of 4th peraeon segment, Ist joint 
stouter and a little longer than 2nd, 3rd half 2nd, all 3 joints apically 
setose, Ist and 2nd in ¢ with a fairly dense fringe of long plumose 
sete on lower margin, flagellum longer than peduncle, ca. 25-joimted 
in ¢, ca. 20 in 2, in both sexes with narrow sensory filaments. 
Second antenna half as long as Ist, ultimate joint slightly longer 
than penultimate, joints stouter in ¢ than in 2, penultimate and 
antepenultimate joints in ¢ with dense fringe of long plumose setae 
on lower margin, flagellum equal to or a little shorter than peduncle, 
13-jointed. 
Upper lip broader than long, entire, distal margin setose. 
Lower lip, outer lobes deeply notched, the outer portion being 
searcely half the size of inner, mandibular processes curved, stout, 
apically subacute, inner lobes broad. 
