Plate XIV. 



Sfanroraliipfnfi alfinif; n. sp. P. 180. 



Fis;. 14. Tlie smaller of the two type specimens of S. aßnis (Sc. Coll. 



Mus. No. 400). Aljout | nat. size. 

 Fig. J C). Smooth-rayed oxyhexaster from gastral side. 300 x . (From Sp. 



No. 400). 

 Fig. 17. Rough-rayed oxvhexaster from subdermal s])ace. 300 x. (From 



Sp. No. 400). 

 Fig. -22. Two rudimentary oxyhexasters (earlv develo])iu(;ntaI stage?). 300 x . 



(From Sj). No. No." 400). 

 Fig. 23. Central node of a discoctaster, showing the disposition of axial 



filaments. Seen in glycerine. 1200 x . (From Sp. No. 194). 

 Fig. 24. Central node of an oxyhexaster, showing the axial cross of fila- 

 ments. Seen in glycerine. 1200 x. (From Sp. No. 194). 

 Fig. 2."3. Central node of a hexactinose oxyhexaster, showing ti>e axial cross 



of hlanients. Seen in glycerine. 1200 x . (From S)>. No. 194). 



StauroccdyptKS erdacroit/ivs n. sp. P. 191. 



Fig. l."3. The type specimen (Sc. Coll. Mus. No. 242), a fragment from the 



oscular margin of a large individual. Seen from the dermal side. 



Marginal lappets reflected outwards and backwards, thus showing 



the spiny gastral surface. About i nat. size. 

 Fig. 18. Snhderrnal traheculfu, showing four thesocytes. Fixed with alcohol 



and stained with htematoxylin. 440 x . 



Sfaurocalypius entaccmthus ? Pp. 194 & 198. 



So. Coll. Mus. No. 403, which specimen is shown in these Studies, 

 Contrib. III., PI. VI., figs. 9 and 10, mider the name 



of ,S'. japomcus. 



Fig. 19. Trabecular tissue, with four thesocytes, from along the lumen of 

 an incurrent canal. Alcohol and hajmatoxylin. 440 x . 



Fig. 20. Chamber-wall, seen surface on. Well-stained archa^ocytes in small 

 grou[)s. Alcohol and hajmatoxylin. 440 x . 



Fig. 21. Same in optical section. 440 x. 



StauroeaJypiKs rœperi (F. R. Sru.). 1^. KiS. 



All figures from F. E. Schulze's tyj)e-spe(;inien, obtained 

 by th<' " Challenger." 



Fig. 20. Discoctaster. 300 x. 



Fig. 27. Oxyhexaster, from gastral side. 300 x . 



Fig. 28. Another oxyhexaster, in which each principal bears, besides two well- 

 developed terminals, a minute rudiment of a third terminal. 300 x . 



Fig. 29. Microdiscohexaster from gastral surface. 300 x . 



Fig. 30. Pentactinic dermalia. 300 x . 



Fig. 31. Stauractinic dermalia. 300 x . 



Fig. 32. Castralia. 300 x. 



