EXTOMOSTRACA COLLECTED IN NATAL. 183 



(xenus Chydoeus Leach. 

 Chydorvis gibsoiii sp. u. PI. XXXII, figs. 1, 2. 



Carapace seen from the side subglobose, broadly rounded 

 in front (fig. 1), narrower behind, dorsal and ventral margins 

 both strongly arcuate, no posterior marginal denticle, width 

 equal to more than three fourths of the length, rostrum curved 

 and acutely pointed, lip-plate rather prominent (fig. 1a), 

 smooth, without any trace of serration; ocellus considerably 

 smaller than the eye ; post-abdominal lamina narrowed and 

 deeply sinuated distally (fig. 2), bearing about ten small, 

 sharp, rather distantly-placed denticles ; terminal claw 

 smooth, with two basal spinules, one long and one short. 

 Length, 0"5 mm. 



Several specimens of this form occurred in the Richmond 

 gatherings. Its nearest allies appear to be Chydorus 

 barroisi Bicliard and C. poppei Richard. It may, how- 

 ever, be distinguished from the former by the absence of 

 any posterior marginal denticle, by the perfectly smooth 

 "lip-plate," and by the unsculptured carapace — from the 

 latter by the number and character of the caudal spinules 

 and the want of shell sculpture. 



Copepoda. 



Genus Broteas Loven. 



Broteas lamellatus {G. 0. Sars). 



1895, Paradiaptomus lamellatus Sar.s. 'On some South 

 African Entomostraca raised from Dried Mud,' p. 46 

 (separate copy), Pis. YII and YIII. 

 H a b . — Richmond. 



Professor Sars, in his paper " On the genus Broteas of 

 Loven," rejects his previously desci'ibed genus "Paradiap- 

 tomus" in favour of Loven's Broteas, which claims priority 

 of date. The type species B. falcif er, as well as B. lamel- 

 latus, is native to South Africa. 



