PLATE XIX 



FlG. I. Carcinonemertes epialti Coe. Diagram of body, showing ocelli, brain 

 lobes, alimentary canal (in dotted lines) and genital glands. X J 5- 



FIG. 2. C. epialti. Optical section of proboscis removed from the worm ; 

 ac, me, pc, anterior, posterior, and middle chambers respectively ; g, gland cells ; 

 c, canal connecting anterior and middle chambers ; ps, remnants of proboscis 

 sheath attached to posterior chamber ; ct, connective tissue in which posterior 

 chamber is imbedded; b, basis of central stylet. X 22 5- 



FIG. 3. C. epialti. Horizontal section of proboscis lying between the brain 

 lobes (br) in its natural position, and showing the posterior chamber lying at 

 right angles to the general axis of the proboscis. Reference letters as in fig. 2. 



FIG. 4. C. epialti. Transverse section of body immediately back of brain. 

 The posterior chamber of the proboscis ( pc) is firmly imbedded in the surround- 

 ing connective tissue. Three lobes of the very short intestinal caecum (ic) are 

 seen; e, esophagus lined with cilia; cm, Im, circular and longitudinal layers of 

 muscles ; sg, submuscular glands ; In, lateral nerve ; *, integument. X I 5- 



FIG. 5. C. epialti. Oblique section through anterior portion of body; r, 

 opening of rhynchodaeum; eg, cephalic glands ; ac, pc, anterior and posterior 

 proboscis chambers ; sg, submuscular glands ; vc, ventral commissure of brain ; 

 e, esophagus ; ic, rudimentary intestinal caecum ; in, intestine. X 12 S 



FIG. 6. C. epialti. Several stylets with their bases, showing variations in 

 form and size. X4. 



FIG. 7. Transverse section of body of C. epialti, showing the thick layer of 

 submuscular glands (sg} and the ovaries (ov) with large ova. The intestine (in) 

 is reduced to a narrow canal. Other reference letters as in fig. 4. X 1 5- 



FIG. 8. C. epialti. Transverse section of body, showing the large number of 

 spermaries (/) and their distribution through the body parenchyma. Reference 

 letters as in fig. 4. X 1 5- 



(214) 



