PUjSNETT and FORSTER cooper — NEMERTEANS. 15 



EXPLANATION OP THE PLATES. 

 Plate 1. 



Fig. 1. Baseodiscus insignis, sp. n., x 2. la, dorsal surface; 1 b, ventral surface. 



Fig. 2. Lineus indicus, sp. n., x 2. 



Fig. 3. „ orienialis, sp. n., x 3. 



Fig. 4. Drepanophorus roseus. 4 a, dorsal surface, x 2^ ; 4 6, head, x 8. 



Fig. 5. Cerebratulus crosslandi, sp. n., x 3. 



Fig. 6. Lineus hancocki, sp. n. 6 a, from side ; 6 b, dorsal surface, X 2. 



Fig. 7. „ corruffatus, x 1. 



Fig. 8. Tubulanus polymorphus, x 4. 



Fig. 9. Baseodiscus sordidus, sp. n., x 2. 



Fig. 10. Lineus albovittatus, X 2. 



Fig. 11. Cerebratulus zebra, x 2. 



Plate 2. 



Fig. 12. Tubulanus polymorphus , transveise section through region of (Esophagus. 



Fig. 13 a. Drepanophorus indicus, transverse section through region of opening of cerebral organ. 



Fig. 13 b. „ 5, transverse section through hinder part of cerebral organ. 



Fig. 13 c. „ „ transverse section through oesophageal region. 



Fig. 14. Lineus albovittatus, section through skin. 



Fig. 15. „ mascarensis, section through skin. 



Fig. 16. „ crosslandi, section through skin. 



Fig. 17. „ orientalis, section through skin. 



Fig. 18. Cerebratulus multiporatus, section through skin. 



Fig. 19. ,, zebra, section through skin. 



Abbreviations used in the Plates. 



ep. = epithelium. 

 bm. = basement-membrane. 

 ffl. — glands. 

 cuffl. — cutis-glands. 

 fftl. = gelatinous layer. 



mcc. = circular muscle-layer of cutis. 



m. = longitudinal muscle-layer. 

 rhyg. — rhynchodaeal glands. 

 o!S. = oesophagus. 



CO. — cerebral organ. 



