122 PROCEEDINGS OF THE ACADEMY OF [Feb., 



Plate V, Figs. 32, 33. — Siliqua intuspurpurea n. sp. 

 Figs. 34. 35, 36. — Trapezium japonicum n. sp. 

 Figs, 37. 3S, 39. — Lithophaga lithura n. sp. 

 Fig. 40, 41. — Dentalium cerinum n. sp. Lateral views. 

 Fig. 42. — Dentalium coruscum n. sp. Ventral aspect of apical end. 

 Fig. 43. — Dentalium coruscum n. sp. Lateral view. 

 Fig. 44. — Trapezium japonicum delicatum n. subsp. 

 Fig. 45. — Dentalium rhabdotum n. sp. Lateral view, natural size. 

 Fig. 46.— Dentalium rhabdotum. Ventral view of apical end. 

 Fig. 47. — Dentalium rhabdotum. Lateral view of oral end. 



