1910.] FRESHWATER CRUSTACEA FROM THE TRANSVAAL. 165 



Literature on the Subject. 



Brady, G. Stewardson. — " On Entomostraca collected in 



Natal." Proc. Zool. Soc. 1904, vol. ii. pp. 121-128, pis. vi.- 



viii., and Ann. Natal Gov. Mus. vol. i. pt. 2, pp. 173-186, 



pis. xxix.-xxxii., March 1907. 



Giesbrecht, W., & 0. Schmeil. — Das Tierreich, 6 Lief. 



Berlin, 1898 (especially p. 67). 

 Guristey, R. — " On a small collection of Entomostraca from 

 South Africa." Proc. Zool. Soc. 1904, vol. ii. pp. 298-301, 

 pi. xviii. 

 Weltner, W. — "Die Clacloceren." Deutsch-Ost-Afrika, 4. 

 1898, Berlin. 

 For histology of soft parts, and especially of the spermatozoa of 

 Ostracods, see G. O. Sars, " On some Freshwater Ostracoda and 

 Copepoda, raised from dried Australian mud." Christiania 

 Vid.-Selsk. Forhandl. 1889, No. 8. 



EXPLANATION OP THE PLATES. 



The appendages have been drawn with the aid of a Camera lucida. and in most 

 cases the nature of the lenses used has been inserted in this explanation together 

 with such reduction or magnification found to have been necessary for the 

 reproduction of the same from the original drawings. 



Plate VIII. 

 All. figures of Cypris spinosa, sp. n. 

 Fig. 1. Dorsal view of animal. X 20. 



2. Lateral view of shell. 



3. Antennule. aa. AD. 4. Zeiss, 3 eyepiece. X j. 



4. Antenna. Ditto. X J. 



Plate IX. 



All figures of Cypris spinosa, sp. n. 

 Fig. 5 a. Mandible, aa. AD. 4. Zeiss, 3 eyepiece. X f. 5 5. Terminal part of 

 gnathobase. -^ Zeiss, 2 eyepiece. X f • 

 6 a. Maxillula. 6 6. Part of typical seta of branchial appendage. 6 c. Palp. 



6 d. Third biting process. 

 7. Maxilla. 

 8 a & 8 6. Accessory copulatory processes of maxilla, aa. Zeis, 4 eyepiece. X f. 



Plate X. 



Fig. 9. Fourth post-oral appendage of C. spinosa. aa. AD. 4 Zeiss, 4 eyepiece. X j. 



10. Penis of male of same. 



11. Fifth post-oral appendage of same. aa. AD. 4 Zeiss, 4 eyepiece. X |, 



12. Caudal furca of same. aa. AD. 4 Zeiss, 3 eyepiece. X J. 



13. Antennule of C. gunningi, sp. n. 



Plate XI. 



Fig. 14 a. Antenna of C. gurmingi. B. Zeiss. 2 eyepiece. X J. 



14 6. Denticulations on second joint (vide p. 153). 



15 a. Mandible of same. 15 6. Terminal part of gnathobase. 15 c. Palp. 



16. C, chrissiensis in lateral view. AA. Zeiss, 2 eyepiece. X i. 



17. C. gunningi in lateral view. 



18. C. mastigophora in lateral view. 



Plate XII. 



Fig. 19 a. Maxillula of G. gunningi. 19 6. Palp. 19 c. Third biting process. 



20 a. Maxilhi of same. 20 6 & c. Accessory copulatory process of male. 



21 a. Fourth post-oral appendage of same. 21 6. Internal terminal bristles of 



distal part of third joint. 



22 a & 22 6. Fifth post-oral appendage of same. 



