4ß MONTGOMERY, On the connective tissues of the Nemerteans. 



Fig. 38. Tetrastemma vermiculum. Interstitial connective tissue 

 cells of the body epithelium (cf. the same in T. catenulatum, Fig. 34). 

 Ehelich's haematoxylin , eosin. (Homogen, immers., oc. 4, tube ex- 

 tended.) 



Fig. 39. Stichostemma eilhardi. Lateral segment of a cross sec- 

 tion through the body wall, showing the parts between the longitudinal 

 musculature (L.M) and the basement membrane of the intestine 

 {Int.Bm). The lateral nerve chord (N. C), lateral blood vessel (L. V), 

 nephridial branches (Neph), and egg cell {Ov) are all enclosed by the 

 intercellular substance (I.S) of the connective tissue membrane. The 

 body cavity {S.C) lies between this and the longitudinal musculature. 

 Del. haematoxylin, Gbenacher's alumcarmine. (Homogen, immers., oc. 2.) 



rig. 40. Stichostemma eilhardi. Half of a cross section through 

 the posterior region of the body, to show the position of the body 

 cavity ÇB.C). Del, haematoxylin, Gteenachee's alumcarmine. (Obj. C, 

 oc. 4.) 



