PLATE XCII. 



1. Posterior end of Cirratulus tentaculatus, Montague, from St. Andrews. Enlarged. 



2. Portion of the posterior region of a male Notomastus latericeus, Sars, to show the pale 



enlargements due to the sperms, St. Andrews. Enlarged. 



3. Gapitella cqpitata, 0. Fabricius, from St. Andrews. The sexual aperture is observed 



between the eighth and ninth segments. Enlarged. 



4. Anterior end of Poecilochsetus serpens, Allen. Reduced from a drawing by Dr. Allen. 



5. Nicomache maculata, Arwidsson, from St. Andrews. Enlarged. 



5a. The same with the anterior end recently reproduced projecting from its tube and 

 viewed laterally. Enlarged. 



6. Oivenia fusiformis, Delle Chiaje, projecting from its tube. A drawing from life by 



Mrs. Arnold "Watson. Enlarged. 



