298 MR. ROBERT GURNEY ON FRESHWATER [NoV. 29, 



Plate XVII. 



Pig. 9. Madrella ferruginosa, central tooth (p. 269). 



10. Facelina lineata, side view of anterior end (p. 288). 



11. „ „ ventral view of anterior end. 



12. StiUger irregularis, tootli (p. 291). 



13. 13 «. Flacohranclius ocellatus, dorsal views (p. 294). 



14. Elysia duhia, wings open (p. 297). 



15. „ „ wings closed and bodj' elongated. 



16. „ „ crawling foot uppermost on surface of water. 



17. „ „ teeth. 



18. JElysia marginata, teeth (p. 296). 



3. On a small Collection of Freshwater Entomostraca 

 from South Africa, By Robert Gurney, B.A., F.Z.S. 



rReceived June 21, 1904.] 



(Plate 'XVIII.*) 



The collection which I describe here was kindly entrusted to 

 me to work out by Prof. Jefirey Bell on behalf of the Natural 

 History Museum. The sjoecimens were partly mounted on slides 

 and partly contained in tubes, and were collected by Major E. 

 Eckersley, R.A.M.C, from a water-hole on the veld at Kroonstad, 

 O.R.C. This water-hole was a collection of surface-water, quite 

 dry in ordinary weather but filled up by thunder-showers. 



Unfortunately very few specimens were preserved, but the few 

 that there are seem of sufficient interest to deserve description, 

 especially as so little is known at present about the Entomostraca 

 of South Afi-ica. Of the seven species collected, only three have 

 been previously described ; of the other four, three are apparently 

 new and one is represented by only a single mutilated specimen. 



The following is a list of the species : — 



Phyllopoda. 

 Fam. BRANCHiPODiDis. 



Streptocbphalus dregei, G. O. Sars. (Plate XYIII. figs. 1, 2.) 



Sars, Arch. f. Math, og Naturv. xxi. no. 4, 1899, p. 19. 



Of this species three males and three females were included in 

 the collection. The male only has as yet been described, so that 

 I will give a short description of the female. 



Female. — Body slender ; thoracic region as long as the caudal 

 region exclusive of the caudal rami, which are long and densely 

 fringed with ciliated setfe. Superior antennse long and slender ; 

 inferior antennpe considerably shorter than the superior, foliaceous, 

 the tip truncated and with a short conical process. Marsiipium 

 not reaching beyond the second caudal segment : in one specimen 

 it contains a single row of eggs, each enclosed in a thick cajosule 

 with conspicuous more or less polygonal markings (fig. 2). 



* For explanation of the Plate, see p. 301. 



