PLATE III. 



Krohnia pacifica Aida. 



Fig. 8 1. — The entire animal. The ovaries are shown for comparison with subtilis. 



Fig. 82. — The anterior end, with the corona. X 61. 



Fig. 83. — A jaw. ■ 247. 



Fig. 84. — The distal end of a jaw, showing the characteristic obtuse angle on the convex edge, and the 



internal thickening. ■ 430. 

 Fig. 85. — Four of the teeth. < 210. 



Krolinia subtilis Grassi. 



Fig. 86. — The entire animal. The ovaries are shown for comparison with pacifica. 



Fig. 87. — A jaw, showing the thickening of the concave and convex edges, and the narrow pulp cavity. 140. 



Fig. 88. — Three of the teeth. 140. 



Spadella draco Krohn. 



Fig. 89. — The entire animal from an immature specimen. The corona, if complete, would appear to have 



been like that figured by GRASSI (op. cit., pi. VII, fig. 1). 



Fig. 90. — The corona of hexagonal form, from an older specimen, x 25. 



Fig. 91. — A jaw. • 107. 



Fig. 92. — Portion of a jaw, showing the sagination. X 547. 



Fig- 93- — The teeth, boiled out. x 140. 



Fig. 94. — The vestibular ridge, and two innermost teeth, from the ventral surface. 140. 



Spadella cephaloptera Busch. 



Fig- 95- — The entire animal: the palps had been lost in these specimens. 



Fig. 96. — The anterior end, showing corona and collarette. 



Fig. 97. — A jaw. • 49. 



Fig. 98. — The tips of two jaws. ■ 520. 



Pig- 99- — Anterior and posterior teeth, boiled out. x 287. 



Figs. 100 — 102. — Sections of ferox illustrating the relations of the alimentary diverticula (compare p. 4). 



100, 101, X 61 ; 102, ■ 140. — oes. oesophagus: int. intestine: coel. trunk coelom, 



bounded in front by the neck septum. 

 Fig. 103. — Posterior ends of four specimens of ferox (compare pp. 4, 5). X 75. 



