EXPLANATIQ]^ OF PLATE VI. 



Nereis ikritabilis n. sp. 

 Page 231. 



Fig. 65. Adult female, foot from 70th segment, X 20. 

 Fig. 66. Sexual seta, X 230. 



Fiof. 67. A-dult male, toot from 70th segment, X 20. 

 Fig. 68. Adult male, 7th dorsal cirrus, X 20. 

 Fig. 69. Adult male, 8th dorsal cirrus, X 20. 



Nereis limb at a Elders. 

 Page 235. 



Fig. 70. Asexual form, posterior segmeiits, X 70. 

 Fig. 71. Sexual form, posterior segments, X 70. 

 Fig. 72. Female, foot from 10th segment, X 20. 

 Fig. 73. Female, foot from 20th segmeiu, X 20. 

 Fig. 74. Female, foot from oOth segment, X 20. 

 Fig. 75. Female, foot from 70th segment, X 20. 



Marphysa sanguinea Qnatr. 

 Page 236. 



Fig. 76. Compound bidentate seta, not found in adult, X 450. 

 Fig. 77. Simple seta, few in youii^z;, numer )us in adult, X 450. 

 Fig. 78. Compound seta, few in young, many in adult, X 400. 

 Fig. 79. Acicula of upper bundle of setae, X 450. 

 Fiff. 80. Acicula of lower bundle, X 450. 



