PLATE IIL 



Krolinia pacifica Aida. 



Fig. 8l. — The entire animal. The ovaries are shown for comparison with siibtilis. 



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



Fig. 83. — A jaw. X 247. 



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



internal thickening. X 430. 

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



Krolinia siibtilis Grassi. 



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



I-"ig. 'èj. — A jaw, showing tlie tiiickening 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 likc that figured by GkASSl (op. cit., pi. VII, fig. i). 



Fig. go. — The corona of hexagonal form, from an older specimen. •, 25. 



Fig. 91. — A jaw. X 107. 



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



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



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



Spadella ccphalopicra Hiisch. 



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

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



f^'S- 97- — ^ J'^w- ■ 49- 



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



I-'ig. 99. — Anterior and posterior teeth, boiled out. x 287. 



Figs. 100 — 102. — Sections oi fcrox illustrating the relations of the alimentar\- di\erticula (comparc p. 4). 



100, lOi, • 61 ; 102, • 140. — oes. oesophagus: int. intestinc: (-ot-l. trunk coelom, 



bounded in front bj' the ncck septum. 

 F"ig. 103. — Posterior cnds of four specimens o{ ferox (compare pp. 4, 5). ■ 75. 



