FEESHWATER ENTOMOSTRACA EROM SOUTH AFRICA. 465 



Colour generally pale, but the anterior antennae and caudal 

 stylets of the male deeply coloured with carmine or rosy 

 purple. In the living condition this coloration is much more 

 extensive, and is more or less evident in both sexes. 



The species was taken by Mr. J. Gibson in a pan on the 

 summit of the Inkenjeni Mountain near the Mahlabatini 

 Magistracy, Zululand. 



Diaptomus fuscatus, sp. nov. PL XXXIV, tigs. 7-10; 

 PL XXXV, fig. 1. 



Female. — Body robust ; seen dorsally, the anterior portion 

 is more than twice as long as broad, broadly rounded in 

 front; the posterior segment truncated, produced laterally 

 into two sharply acuminate angles; urosome three-jointed, 

 genital segment somewhat dilated, last segment and caudal 

 rami very short and nearly equal in length, terminal set^ 

 very feebly plumose. Anterior antennee extending when 

 reflexed beyond the posterior extremity of the cephalothorax. 

 Basal joint of the fifth pair of legs simply quadrate; inner 

 branch simple, uniarticulate, digitiform, bearing a single 

 terminal seta and one or two minute hairs; distal joint of the 

 outer branch stout, awl-shaped, sharply pointed; the distal 

 half of its inner margin finely pectinated, a single stout seta 

 attached iiear the middle of its outer surface. 



Length 1'95 mm. Colour deep brown. 



Male. — Anterior antenna bearing a very strong awl-shaped 

 spine immediately in front of the tumid part of the limb, and 

 two very small spines on the preceding joints; the ante- 

 penultimate joint exserted at its distal end into a long, 

 slightly curved, projected extremity, as long as the penulti- 

 mate joint. Last pair of feet (fig. 9) extremel}^ asymmetrical; 

 basal joint of the right foot bearing a minute papilliform 

 process at the end of its inner edge; tei-minal joint shorter, 

 subquadrate, with a long and slender, flexuous claw and a 

 shorter spine at its outer angle; the foot of the left side is 

 about as long as the first joint of the right foot, simple, club- 

 shaped, tapered to the distal end, which is slightly flexed and 



