18 



ART. 12. — S. T0KUNAGA : ON TITE 



TOXASTER TOSAENSIS P. de Loriol. 



Literature consulted : — 



P. de Loriol, Notes pour servir a l'étude des Échinodermes, 

 II. série, Fase. L, 1902. 

 Locality : — 



Torinosu in Sakawa, Prov. of Tosa (Cretaceous) (brought to 

 S. Tokunaga). 



LINTHIA NIPPONICA Yosh. 



PL I. Figs. 5-7.— PI. III. Fig. 1. 



Literature consulted : — 



S. Yoshiwara, On some new Fossil Echinoids of Japan. — 

 Journ. Geol. Soc. Tokyo, Vol. VI. No. 65, 1899. 



Length. Width. Height. Length of Length of ant. Length of post. Width of Width of 



odd petal. paired petal. paired petal. petal. interp. area. 



87 mm. 86 mm. 38 mm. 48 mm. 46 mm. 32 mm. 7 mm. 2.2 mm 



64 mm. 60 mm. 25 mm. 31mm. 31mm. 20 mm. 5.5 mm. 2 mm. 



59 mm. 58 mm. 21 mm. 25 mm. 18 mm. 5.5 mm. 2 mm. 



58 mm. 54.5 mm. 23 mm. 27 mm. 26 mm. 18 mm. 5.5 mm. 2 mm. 

 5S mm. 57 mm. 22 mm. 

 64 mm. 64 mm. 30 mm. 



Test thick, large, somewhat cordiform ; tumid dorsally, 

 slightly concave actinally, a portion of apical system sunken ; 

 anterior groove very wide and shallow; posterior extremity vertically 

 truncated. 



Apical system and vertex nearly central or slightly eccentric 

 towards the front in old specimens; basal plates four, perforated; 

 madreporite large, central. 



