The Fresh-water Entomostraca of Cape Province. 321 



Specific Characters Female. Carapace about as in the preceding 

 species. Head, however, considerably more procumbent, with the 

 dorsal margin evenly curved throughout, front obtusely rounded, 

 lower edge strongly protuberant at the insertion of the autenuulae. 

 Eye comparatively larger than in M. macrocopa. Antennulae very 

 slender and narrow, almost linear in form. Tail-piece with the distal 

 part more produced than in the preceding species, being fully half 

 as long as the proximal one ; anal denticles eleven on each side ; apical 

 claws each with a series of well-marked secondary denticles at the 

 base. Ephippium, as in M. macrocopa, with two egg-ampullae. 



Body rather pellucid, with a very faint yellowish tinge. 



Length of shell reaching T5 mm. 



Remarks. This species, established in the year 1896 by the present 

 author, is allied to M. macrocopa but easily distinguishable by the 

 different shape of the head, the slender and narrow anteimulae, and 

 the more produced tail-piece, the apical claws of which have each 

 a well-marked row of denticles at the base. 



Occurrence. Some specimens of this form developed in one of my 

 aquaria prepared with mud taken by Dr. Purcell in the neighbourhood 

 of Bergvliet. 



Distribution. Australia, near Sydney. 



20. MOINA BRACHIATA (Jui'ilie). 



(Plate XXXV, figs. 3, 3 a, 6.) 



\Lonoculus brachiatux, Jurine. Histoire des Monocles, 1820, p. 131, 

 pi. xii, figs. 3 and 4. 



Syn. : Moina rectirostris, Leydig. 



Specific Characters Female. Carapace rather large and broad, 

 being in gravid specimens greatly distended dorsally. Head slightly 

 procumbent, with a well-marked sinus above the ocular region, the 

 latter narrowly rounded, lower edge of head only slightly convex 

 .at the insertion of the antermulae. Eye of moderate size. Antennulae 

 about as in M. macrocopa. Tail-piece conically tapered, with the distal 

 part more than half as long as the proximal one ; anal denticles about 

 thirteen on each side ; apical claws each with a series of well-marked 

 secondary denticles at the base. Ephippium with only a single egg- 

 ampulla. 



Colour whitish grey, with a slight yellow or violaceous tinge. 



Length of shell reaching 1'3 mm. 



Remarks. The present species has generally been recorded by 

 recent authors under the name M. rectirostris ; but in my opinion this 



