EXPLANATION OF PLATE XLII. 



Eunice bassensis, M'Intosh. 



Fig. 75. — The iq^per jawlets disarticulated (x 20). 



Fig. 76. — The '" fangs " or basal members of the upper 

 series of jawlets (x 20). 



Fig. 77. — ^The left lower jaw, upper surface ( < 20). 



Fig. 78. — The twelfth parapodium from a much contracted 

 specimen, showing the stouter form of the dorsal 

 cirrus and the shortened gill filaments, as compiired 

 with Fig. 70. 



Eunice pycnobranchiata, M'Intosh. 



Fig. 79. — The eleventh parapodium (x20); the gill shows 

 the characteristically thickened filaments ; the 

 chsetse are diagrammatically indicated. 



Fig. 80. — Side view of the head (x 4), to show the deep 

 incision between the lower and the lateral lips ; 

 the upper edge of the former is somewhat everted, 

 so as to be visible from above. 



Lumbriconereis gulielmi, sp. nov. 



Fig. 81. — The head, dorsal view (x 4). 



Fig. 82. — The head, ventral view ( x 4). 



Fig. 83. — The head, side view (x 4). 



Fig. 84.— The 55th parapodium (x 20). 



Fig. 85.— The 125th parajiodium (x 20). 



Fig. 86. — The 29th parapodium ( x 20) ; blood vessels are 

 indicated in the anterior lip. 



Fig. 87. — The 29th parapodium of another individual ( x 20), 

 in which the large jwsterior lip has been pressed 

 upwards by contact with the tube in which it hud 

 been preserved. Oha^tffi omitted. 



Fig. 88. — The upper jawlets (enlarged), dra\\ n in situ from 

 above. The left " hwm " is omitted, 



