Plate VII. 



Pourtalesia carinata Al. Au. P. ceratopyga Ai,. Au. P. laguncula Al. At.. Echinocrepis cuneata Al. Ag. 



Fig. 47. Peripodia and splueridia ol' the aitibulacrals V a J ami V /< / in 1'. carinata. 



Fig. 48. Tliu suh-oial region of 1'. eeratopyga; ambuiacrals euluured. 



Fig. 49. A |)art of the same, in a difi'erent position. 



Fig. 50. A part of the same with pedicels, spines, and spherids. 



Fig. 51. The calycinal system of the same, with the surrounding region, ]). tSO. 



Fig. 52. The same parts in P. laguncula. 



Fig. 53. The sub-oral region of Echinocrepis cuneata; ambuiacrals coloured. 



Fig. 54. The calycinal system and surrounding area m the same. 



