144 



a cirrus is protruded. A very slight impressed line traverses longi- 

 tudinally the middle of both surfaces of the body ; it is most distinct 

 at the anterior half. Some of the segments at the posterior extremity 

 of the body were partially separated from the rest and seemed about 

 to be detached. In these alone were the traces of ova perceptible, 

 which were extremely minute, and only apparent at the margins of 

 the segments, near the base of the cirrus or lemniscus. From the 

 thickness and opacity of the body, the nutrient vessels could not be 

 detected. The joints or segments at the anterior part of the body 

 were so short, that they resembled mere transverse rugce; at the pos- 

 terior end of the body they did not exceed half a line in length. 



"The dilated margins of the segments, and the projecting cirri 

 give this tape-worm a considerable resemblance to the Nereis lameU 

 ligera of Pallas." 



