COLLECTION OF NEMEHTEANS FROM SINGAPORE. 137 



6. OuDEMANS, A. C. — " The Circulatory and Nepliridial Apparatus of the 



Neniertea," ' Quart. Journ. Mic. Sci.' (Supplement), 1885. 



7. PuNNETT, R. C. — "On some South Pacific Nemertines collected by Dr. 



Wiliey," 'Dr. Willey's Zoological Results,' part v, 1900. (In the 

 press.) 



8. Verrill, a. E. — " The Marine Nemerteans of New England and Ad- 



jacent Waters," 'Trans. Connect. Ac.,' vol. viii, 1892. 



EXPLANATION OF PLATES 5—8, 



Illustrating Mr. R. C. Pumiett's paper " On a Collection 

 of Nemerteans from Singapore." 



Reference Letters. 



etc. Anal commissure, ul. Alimentary canal. hh\ Buccal vessel, hhc. 

 Commissure of buccal vessels, blc. Blood lacuna of cerebral organ, bm 

 Basement membrane, c. Cutis, eajt. Caudal appendage, cc. Ciliated cana 

 of cerebral organ, cgl. Cutis glands, corg. Cerebral organ, cu. Connec 

 tive-tissue layer of cutis. dbv. Dorsal blood-vessel, dc. Dorsal com 

 missurc. ddg. Dorsal division of dorsal ganglion, dg. Dorsal ganglion 

 ep. Epithelium, exd. Excretory duct. exdi. Internal excretory duct, ext 

 Excretory tubule, fc. Fibrous core of cerebral organ, fuc. Fibrous core 

 of side stem. //•. Frontal organ, g. Ganglion cells, gcu. Gelalinous 

 connective-tissue layer of cutis, gcorg. Gland-cells of cerebral organ. 

 gd. Genital duct. go. Glandular layer of oesophagus, hf. Head furrow. 

 ////. Head glands. ///. Cephalic lacuna. hs. Head slit. id. Intestinal 

 diverticulum. Ibv. Lateral blood-vessel, m. Mouth, mc. Circular muscle 

 layer, mcc. Circular muscles of cutis, men. Muscle-fibres and connective 

 tissue. 7ncr. Muscle-cross, ml. Longitudinal muscles of pi'oboscis sheath. 

 mlc. Longitudinal muscles of cutis, vili. Inner longitudinal muscle layer. 

 mlo. Outer longitudinal muscle layer. 7ic. Lateral nerve-cord. nd. Dorsal 

 median nerve, nep. Subepithelial nervous layer. }ih. Cephidic nerves. 

 7is. Nervous sheath. ol. (Esophageal lacunae, ps. Proboscis sheath, r. 

 Rectum, rhc. Rhynchoccelom. t. Testis. tbv. Transverse blood-vessel. 

 tg. Glandular (?) tissue round cephalic lacuna, vc. Ventral commissure, 

 t;^,^. Ventral division of dorsal ganglion, vg. Ventral ganglion, ty?-. Ventral 

 groove, vgt. Ventral gutter of intestine. 



