C!OE. — Nemerteans. 



PLATE 10. 



Carinomella lactea Coe. 



Fig. 63. Transverse section of body near middle of intestinal region. Pro- 

 boscis sheath has disappeared. Intestinal walls are lined with 

 highly columnar epithelium, which is thrown up into folds. 

 Lateral blood vessels are distended more than in some of the 

 neighboring sections. Ova are well developed, and oviducts are 

 nearly ready for their discharge. Lateral nerves have regained 

 a position outside circular muscles. X 72. 



Fig. 64. Longitudinal section near middle of intestinal region in a position 

 indicated by BB in Fig. 63, and in such a manner as to cut directly 

 through the intestinal folds (inf) with the pouches between them. 

 Smaller and incipient folds (inf) appear between the larger folds. 

 The section passes directly through the lateral blood vessel and the 

 lateral nerve core. The integument is higher on the dorsal than 

 on the ventral surface. X 72. Cf. Figs. 63 and 65. 



Fig. 65. Longitudinal section near middle of intestinal region, in a position 

 indicated by AA in Fig. 63. The intestinal epithelium is thrown 

 up into high folds (inf) with alternating, slender pouches. These 

 are especially conspicuous on the ventral side of the stomach, but 

 probably represent little more than temporary folds. The sexual 

 glands are closely packed together above the intestine. X 72. 

 Cf. Figs. 63 and 64. 



