166 ON FRESHWATER CRUSTACEA FROM THE TRAXSVAAL. [Feb. 1 , 



Plate XIII. 



Fig. 23 a & 23 b. Two views of a. furcal ramus of C. gunning i. 



24 Lateral view of ft tuberculoid, sp. n. AD. aa. 6 Zeiss, 4 eyepiece. X !. 

 25. Antenna of same. AI). aa. 6 Zeiss, 4 eyepiece. X £. 

 26 a. Gnathobase of mandible of same. AD. 6 D. Zeiss, 2 eyepiece. X ',. 

 26 6. Palp. AD. 6. Zeiss, 2 eyepiece. 



27. Third biting process of maxillula of same. AD. 6. Zeiss, 4 eyepiece. 



28. Maxilla of same. 



Plate XIV. 



Fig. 29. Fourth post-oral appendage of ft tubercidata. AD. aa. 6. Zeiss, 4 eye- 

 piece. X % . 



30. Terminal part of fifth post-oral appendage of same. AD. 6 D. Zeiss, 2 eye- 



piece. X \. 



31. Palp of mandible of C. mastigopJvora. 



32. Third biting process of maxillula of same. 



33. Furcal ramus of ft tubercidata. AD. aa. 6. Zeiss, 2 eyepiece. X f- 



34 & 35. Accessory copulatory process of maxilla of ft chrissiensis. AD. 6 D. 

 Zeiss, 2 eyepiece. X f . 



Plate XV. 



Fig. 36. Penis of male ft gunningi. DD. Zeiss, 2 eyepeice. X .'. 



37. Penis of male G chrissiensis. AD. 6 D. Zeiss, 2 eyepiece. J. 



38. Furcal ramus of ft mastigophora. 



39 a. Lateral view of Daphnia gibba, sp. n. X 16. 



39 b. Telson of same. 



40 a. Lateral view of Daphnia pulex. 



40 b. Lateral view of terminal part of head of same. 



40 c. Telson of same. 



41. Lateral view of Simocephalus comiger, sp. n. 



Plate XVI. 



Fig. 42 a. Telson of 8. comiger. 42 A. Enlarged drawing of a spine. 

 43. Lateral view of Leydigia trispinosa, sp. n. X 60. 



44 a. Lateral view of Chydorus Carolina, sp. n. X about 100. 

 4i b. Telson of same. 



45 a. Terminal portion of abdomen of male Broteas falcifer Sars. 



45 b. Abdomen of female of same. 



46 a. Lateral view of female Metadiaptomus transvaalensis. sp. n. X 46. 

 46 b. Abdomen of temale. 46 c. Abdomen of male. 



Plate XVII. 



All figures oi Metadiaptomus transvaalensis, sp. n. 



Fig. 47. Antennule of female. AA. Zeiss, 4 eyepiece. X j. Esthetes in blue. 



48. Antenna. AA. Zeiss, 2 eyepiece. 



49. Mandible. DD. Zeiss, 2 eyepiece. X f- 



50. Maxillula. DD. Zeiss, 2 eyepiece, x £• 



Plate XVIII. 

 All figures of Metadiaptomus transvaalensis, sp. n. 



Fig. 51. Maxilla. DD. Zeiss, 2 eyepiece. X f. 



52. Maxilliped. DD. Zeiss, 2 eyepiece. X f. 



53. Second thoracic appendage. AA. Zeiss, 4 eyepiece. 



54. Fifth thoracic appendage. AA. Zeiss, 4 eyepiece. 



55 a. Sixth thoracic appendage of male. DD. Zeiss, 2 eyepiece. X f. 

 55 b. Sixth thoracic appendage pf female. DD. Zeiss, 2 eyepiece. Xf. 



