Fig. 
Fig. : 
Fig. 4 
Fig. 
Fig. 
Fig. 
54 
. ac2. Fragment of slender ore. Zeiss A. Cam. luc. Zeiss. 
. ac2. Fragment of slender one. Zeiss A, Cam. luc. Zeiss. 
. ac2. (f) Half of subfusifoım acerate spieule. Zeiss A, Cam. luc. Zeiss. 
. M. ta. $ =90°. Head of a patento-ternate. Zeiss A, Cam. luc. Zeiss. 
. Head of M. ta. < 90°. Curious form; $ very great; d geniculated 
Zeiss A. 
. Head, middle and shaft-point of id. Zeiss A, Cam. luc. Zeiss. 
Figg. 45, 46. Heads of M. ta. $< 90° ordinary kind. Zeiss A, Cam, luc. Zeiss. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
47. 
48. 
49. 
0. 
5l. 
92. 
58. 
54. 
95. 
96. 
97. 
58. 
59. 
60. 
61. 
62. 
63. 
64. 
65. 
66. 
67. 
st. Zeiss D, Cam. luc, Zeiss. 
gl. st. Zeiss D, Cam. luc. Zeiss. 
Head of M. ta. d. bif. Zeiss A, Cam. luc. Zeiss. 
PLATE II 
Figg. 50 and 5l. Geodia Barreiti. 
Head and shaft-point of M. ta. d. bif. (d’<d). Zeiss A. 
Head of M. ta. 9< 90°. Zeiss A. 
Figg. 52—63. Synops pyriformis. 
Fragment of ac?. Sharply pointed one. Zeiss A. 
Fragment of ac?. Very slender, sharply pointed one. Zeiss A. 
Fragment of tr2. Bluntly ended acerate spicule. Zeiss A. 
Head of another tr?. showing a transition to the following kind. 
Zeiss D. 
Head of ac?. [tr2.] with teat-shaped end. Zeiss D. 
ac?. small form (type: Renieridae) more or less bent. Zeiss A. 
Fragment of M. ta. $> 90°. (modification of M. ta. = 90°) Zeiss A. 
Head of M. ta. 9< 90°. Specimen with long teeth. Zeiss A. 
Head, middle and shaft-point of M. ta. $<{ 90°. Specimen with 
short teeth. ö 
st. Largest kind. Zeiss D, Cam. luc. Zeiss. 
st. Smallest kind. Zeiss D, Cam. luc. Zeiss. 
glst. Zeiss D, Cam. luc. Zeiss. 
Figg. 64—66. Pachychalina caulifera n. sp. 
Fragment of skeleton of the upper parts. Hartn. IV, Cam. luc. Zeiss. 
Fragment of 66, to show the teat-shape. Zeiss F, Cam. luc. Zeiss. 
ac?. f. Hartn. VII, Cam. luc. Zeiss. 
Figg. 67 and 68a—h. Cribrochalina variabilis var. crassa. 
(tr°.) ac. Hartn. VII, Cam. luc. Zeiss. 
