i24 DISCOVERY REPORTS 



by nearly one-fourth of its length ; no distal articulation ; one large and one small spine on the outer 

 distal margin of the sympod (Fig. 29 A, B, F). Eyes large ; set widely apart ; cornea reniform ; flattened 

 dorso-ventrally ; no papilla on the eyestalk (Fig. 29 B). Thoracic appendages. In all the specimens the 

 third to the eighth thoracic endopods are broken off, but there were a number of them loose in the tube. 

 I have figured the largest of these but cannot say from which pair it came. These endopods have the 

 same general form as in the other species of the genus and, if the largest loose endopod is the eighth, 

 it would extend to the anterior margin of the sixth abdominal somite. There is a minute spine on the 

 outer distal angle of the first segment of the exopod (Fig. 29 G). Pleopods of the female rudimentary; 



Fig. 29. Erythrops africana sp.n. A, adult male in lateral view with thoracic appendages removed to expose sternal processes, 

 x 20; B, anterior end of female in dorsal view, x 34; C, sternal process of male (much enlarged); D, right antennule of male, 

 x 34; E, right antennule of female, x 34; F, right antenna, x 34; G, thoracic appendage, x 34; H, first pleopod of male, x 34; J, 

 fourth pleopod of male, x 34; K, telson and left uropod, x 34. 



of the male normal and biramous, with well-developed lobes from the basal segments of the endopods; 

 in the first pair the endopod is reduced to a single segment which is slightly inflated distally and bears 

 a well-developed lobe at its base (Fig. 29 H, J). Uropods more than twice as long as the short telson; 

 endopod tapering, shorter than the exopod ; no serrulations on the inner margin and no spines in the 

 neighbourhood of the statocyst (Fig. 29 K). Telson of the usual type found in the genus; lateral 

 margins straight, converging to the broad truncate apex; inner pair of apical spines slightly longer 

 than outer (Fig. 29 K). 



Length. Largest male, 4-6 mm. ; largest female, 4-6 mm. 



Remarks. This species very closely resembles E. serrata (G. O. Sars), but can be distinguished from 

 it by the relatively narrower antennal scale and the absence of serrations along its outer margin ; by the 



