SYSTEMATIC REPORT 121 



the very narrow apex; apex armed with two pairs of spines; inner pair very long, one-fourth as long 

 as the telson ; outer pair half as long as the inner ; no median plumose setae (Fig. 27 H, J). Marsupium 

 composed of two pairs of brood lamellae. 



Length of larger female, 10-2 mm. The male specimen is broken, but I think that it would have been 

 larger than the females. 



Remarks. This species very closely resembles K. oceanae especially as regards the antennae and the 

 tail fan, but may be distinguished from it by the larger eyes in which the cornea is wider than the 

 eyestalk; by the straight upturned edges of the rostral plate, the less inflated carapace and by the 

 shorter and less slender endopods of the thoracic appendages. 



Distribution. Known only from the west of Table Bay, South Africa. 



Genus Heteroerythrops gen.n. 

 Diagnosis. Carapace inflated anterior to the cervical sulcus; anterior margin very short, produced 

 into a bluntly rounded right-angled rostrum leaving the whole of the eyes exposed. Antennnlar ped- 

 uncle long and robust; outer distal angle of first segment not produced; articulation between second 

 and third segments very oblique. Antennal scale very small and narrow with rounded apex; no 

 spine at distal end of naked portion of outer margin; antennal peduncle long and robust. Eyes large 

 and globular; not dorso-ventrally compressed; set widely apart; no ocular papilla. First thoracic 

 endopod robust with a long narrow lobe from the second segment. Second thoracic appendage as in 

 Erythrops. Uropods very long with the endopod nearly as long as the exopod. Telson very short, 

 triangular, lateral margins straight and unarmed ; apex very narrow and armed with one or two pairs 



of spines. 



Heteroerythrops purpura gen.n., sp.n. 



Occurrence: ^ 8 ' 



St. 1606. 31. x. 35 (night). West of Angra Pequena, 600-500 m., 1 adult $, 6-2 mm. Type. 



Description. Carapace relatively large and considerably inflated anterior to the cervical sulcus. 

 Rostral plate short with lateral margins nearly straight, converging to the bluntly rounded apex; 

 antero-lateral angles slightly produced and rounded; posterior margin straight and transverse except 

 for a median semicircular emargination, which leaves the last two segments exposed in dorsal view 

 (Fig. 28 A). Antennular peduncle with the first and third segments sub-equal in length ; distal margin of 

 first segment transverse and not produced at its outer angle; posterior margin of third segment very 

 oblique so that the outer margin of the second segment is very much longer than the inner (Fig. 

 28 A, B). Antennal peduncle shorter than the antennular peduncle ; first and second segments relatively 

 broad; third segment more slender and nearly twice as long as the second; scale very small and narrow, 

 slightly shorter than the peduncle; apex rounded; proximal two-thirds of outer margin naked and not 

 ending in a thorn or spine; distal third and inner margin armed with long plumose setae; no distal 

 suture; no spine on outer distal angle of sympod (Fig. 28 C). Eyes large and globular; not flattened 

 dorso-ventrally; set very widely apart and extending well beyond the lateral margins of the carapace. 

 There is a distinct swelling at the base of the eyestalk, but I am unable to say whether this is natural 

 or due to distortion. I am unable to find any ocular papilla. Colour note in bottle, 'eyes brilliant 

 golden'. Mandibles : palp unusually large, extending forward beyond the distal margin of the second 

 segment of the antennular peduncle; second segment very broad with outer margin very convex; third 

 segment long and narrow with parallel sides (Fig. 28 A, D). Maxilla similar to Erythrops. The exopod 

 is armed with a number of unusually strong, very plumose setae in which the ' plumes ' are so long and 

 thick that each seta has the form of a thick brush (Fig. 28 E). First thoracic endopod robust; armed 



