COE. — Nemerteans. 



PLATE 7. 

 Carinomella lactea Coe. 



Fig. 55. Transverse section of body somewhat anterior to nephridial region. 

 Longitudinal muscles are seen to completely surround the probos- 

 cis sheath. Sponge-like outgrowths from the lateral blood vessels 

 pass into the proboscis sheath. Both dorsal and ventral fibrous 

 crossings between outer and inner circular muscular layers are 

 indicated, as are also the three median nerves. Lateral vessels 

 have passed outside inner circular muscles. X 72. 



Fig. 56. Transverse section of body through lateral sense organs. The mus- 

 cles of the sense organs are indicated (som). The section is 

 through the large nephridial ducts, which lie on the dorsal wall 

 of the lateral blood vessels, and posterior to the smaller nephridial 

 tubules. The integument shows the dorsal infolding and the 

 differentiated glands of the dark band. The circular muscles are 

 enormously developed, while the lumen of the stomach is narrow. 

 X 72. 



