4 Prof. M'liiiosli's Notes from the 



others n;rcon or p\ar|)le predominate, <au(l the thiid in which 

 tiie animals lie is always tinejed with |;reen (Dalycil). 



Eacii filament has an elastic cliordoid and canierated axis, 

 the canier;e hc^ig after the fashion ot the bristles of Nereis 

 or Ancia. They are nnited by a web inferiorly (abont tiie 

 level oltlie first pigment-i)aud), but free tla\)nghi)ut the rest 

 of their extent, and are somewhat flattened processes with a 

 smooth external edge, near which the axis lies ; whilst its 

 inner border is fringed with a dense series of slemler pinna», 

 Aviiieh likewise have a translucent axis jointed at intervals 

 li^e the bristles of the (Jhloroemidie. Tlie filaments and 

 tiieir translucent axis gradually diminish distally, bnt the 

 axis can be traced almost to the extrcnnity. Toward the tij) 

 of the filament the pinnae gradually diminish in length, 

 finally forming mere papillse, and thereafter the tapering 

 tip is smooth and of moderate length. When the branchiie 

 liave lost their distal ends and regeneration has considerably 

 advanced, the long filamentous processes projecting from 

 the tii)s give a novel character to the organs. 



Anteriorly the buccal segment occupies a hollow between 

 the two pillars of the dorsal fan, a more or less separate fan- 

 shaped lamella occurring on each side, tinted of a deep 

 reddish brown. From this the marginal collar passes 

 ventral !y to expand into the prominent and generally refiexed 

 lamella on each side of the meilian fissure, where it is dis- 

 tinctly thickened. A band on each side of the median oral 

 process joins it to the fold a little higher. 



The first shield on the ventral surface behind the collar is 

 continuous from side to side, and is the largest of the series 

 of glandular scutes. Though it is opposite the first bristle- 

 bundle, that would seem to pertain to the segment behind it. 



The month leads into a simjjle alimentary canal, which, 

 when seen from the dorsum, forms a raoniliform tract from 

 end to end — wider anteriorly and narrower posteriorly. 'I'he 

 septum in each segment retains it firmly in position. The 

 contents can be seen through the trans[)arent walls of 

 the canal, an 1 in one consisted anteriorly of pale granules 

 and posteriorly of jninldy sas d. 



The budy shows little or no narrowing anteriorly, remains 

 of similar diameter for a considerable distance, then in 

 preservation may increase in breadth behind the anterior 

 third, and thereafter gradually ta[)ers to the' tail, ending 

 in the aims, which is often bilohed. In lateral view the 

 margin of the vent slopes from above downward and back- 

 ward, the ventral edge thus projecting considerably. From 

 above the aperture is bitid inferiorly, and a triangular area 



