On the connective tissues and body cavities of the Nemertcans. 43 



Fig. 2. Carinella. Segment of a cross section through the body 

 wall; behind the region of the proboscis sheath; showing the position 

 of the body cavity {B.C). Del. haematoxylin, eosin. (Obj. A, oc. 2.) 



Fig. 3. Carinella. Mesenchym cells, and pre-genital cells from 

 the body cavity. Del. haematoxylin , eosin. (Homogen, iramers., 

 oc. 4.) 



Fig. 4. Carinella. Cross section through 3 muscle bundles of 

 the longitudinal muscle layer of the body wall, from the posterior 

 region of the body. The intermuscular connective tissue (/.S, C) is 

 shown, and in one of the bundles the contained fluid {Ft). Del. 

 haematoxylin, eosin. (Homogen, immers., oc. 4.) 



Fig. 5. Carinella. Intracapsular connective tissue cells from the 

 fibrous core of the brain. Del. haematoxylin, eosin. (Homugen. im- 

 mers., oc. 4.) 



Fig. 6. Carinella. Cells of the connective tissue with inter- 

 cellular substance; a — c from the basal membrane of the body epi- 

 thelium, d from the inner circular muscle layer. Ehklich-Biondi stain. 

 (Homogen, immers., oc. 4.) 



Fig. 7. Carinella. Mesenchym and pre-genital cells of the body 

 cavity (cf. Fig. 3). Del. haematoxylin, eosin. (Homogen, immers., 

 oc. 4.) 



Fig. 8. Carinella. Interstitial connective tissue cells of the body 

 epithelium. Del. haematoxylin, eosin. (Homogen, immers., oc. 4.) 



Fig. 9. Carinella. Portion of a cross section of the basal mem- 

 brane of the body epithelium, showing one of its ridges of the outer 

 surface (cf. Fig. 1). Ehelich-Biondi stain. (Homogen, immers., oc. 2.) 



Fig. 10. Carinella. Intracapsular connective tissue cells, from 

 between the outer and inner neurilemma of the brain. Del. haemato- 

 xylin, eosin. (Homogen, immers., oc. 4.) 



Fig. 11. Cerehratulus. Intracapsular connective tissue cells frum 

 the fibrous core of the lateral nerve chord. Del. haematoxylin, eosin. 

 (Homogen, immers, oc. 4.) 



Fig. 12. Carinella. Portion of a cross section through the 

 medially situated wall of the lateral blood vessel, from the anterior 

 third of the body. Ehklich-Biondi stain. (Homogen, immers., oc. 2.) 



Fig. 13. Cerehratulus. Cell {Cl) of the connective tissue with 

 intercellular substance {l.S), situated between the fibres {M.F) of the 

 outer longitudinal musculature, and medially producing the outer neuri- 

 lemma (Neur) of the lateral nerve chord. Del. Haematoxylin, eosin. 

 (Homogen, immers., oc. 4.) 



Fig. 14. Cerehratulus. Intracapsular connective tissue cell (cate- 

 gory a) with nuclei of other cells, from the brain, between the outer 

 and inner neurilemma. Del. haematoxylin, eosin. (Homogen, im- 

 mers., oc. 4.) 



Fig. 15. Carinella. Parenchym cells between muscle fibres, from 

 the latero-ventral periphery of the proboscis sheath. Ehklich-Biom)! 

 stain. (Homogen, immers., oc. 4.) 



