EXPLANATION OF PLATE XLIII. 



Lumbriconereis gulielmi, sp. no v. 



Fig. 89. — A series of left parapodia from above ( X 7), from 

 the 10th, 25th, 45th, and a posterior segment, in 

 order to show the changes in form and development 

 of the lips and the arrangement of the chaetse. 



Fig. 90. — One of the middle chsetse from the 125th para- 

 podium (x 70). 



Fig. 91. — The lowermost chaeta from the 29th foot (x 70). 



Fig. 92. — An upper hook from the 125th parapodium ( x 250). 



Fig. 93.— One of the lower hooks from the 125th foot { x 250). 



Fig. 94. — The uppermost chseta from the 10th parapodium 

 (X 70). 



Oenone haswelli, sp. nov. 

 Fig. 95. — The head from above ( x 4). 

 Fig. 96. — The head from above after the peristomial flap 



has been slit up and turned aside to show the three 



small tentacles which lie below it (x 4). 

 Fig. 97. — The head from below (x 4). 

 Fig. 98. — The anterior end of another specimen in which 



the prostomium is retracted below the peristomial 



flap (X 4). 

 Fig. 99.— The 55th parapodium (x 20). 

 Fig. 100. — A sub-acicular chseta from a posterior parapodium 



(x 250). 

 Fig. 101. — An upper hook or acicular chseta from a posterior 



foot with the notch separating the two teeth terminal 



in position (x 360). 

 Fig. 102. — A lower acicular chseta from the same foot { x 360). 



The proximal tooth is here laterally situated ; the 



wing is broken. 



Lysarete australiensis, sp. nov. 



Fig. 103.— The head from above (x 2|). The three ten- 

 tacles lie backwardly, directed in a groove. 



Fig. 104. — The median region of the first three segments and 

 part of the prostomium ( x 5). The tentacles are 

 cut away to show the posterior pair of eyes, and 

 the excavation in the three segments in which the 

 tentacles lie. 



Fig. 105.— The head from below (x 2^). 



Fig. 106. — A transverse section through the body (x 2). 

 The parapodium of the left side has been omitted. 



Fig. 107. — The parapodia from segments 4, 16 and 37 

 ( X 4) from above. 



Fig. 108. — A supra -acicular chfeta from the 10th parapo- 

 dium (x 5). 



Fig. 109. — The lower jaw and upper series of jawlets of the 

 right side as seen in situ ( x 5). 



