CEl'HALOrODA FROM THE HOKKAIDO. Ö 



Compare : 



1840. T. Bergen D'Orbigny : Pal. Fr. Terr. Cret. Tome I., 



p. 590, pi CXLIIL, ligs. 3-G. 

 1847. T. Boyerl Pictet et I^oux : UoW. des Grè.s Verts., 



p. 148, pi. XV., fig. 8. 

 1847. ,, ,, QuENSTEUï : Pctief. Deutseli., L, p. oOO, 



pi. XXL, lig. 2G. 

 1856. „ „ Shaepe : Moll, of the Clialk, p. 6Ö, pi. 



XXVL, figs. 9-11. 

 18(31. „ ,, PiCTET et Campiche : Saiiite-Croix. T. XL, 



p. 134, pi. LVIIL, fig. 1-5. 

 1866. ,, ,, ÖTOLiczKA : Cret. Cepli. 8outli India, p. 



185, pi. LXXXVI., figs. 3-6. 

 1897. ,, ,, KossMAT : Öüdindisclie Kreidef. p. 45. 

 1903. ,, ,, Choffat : Lc Cret. de Condiicia, p. 15, pi. 



I., figs. 3-5. 

 Öliell turreted, sinistral, with an apieal angle of about 10°. 

 Whorls contiguous, slowly increasing in size ; rounded externally, 

 and slightly concave on the upper side. Umbilicus very narrow. 

 External surface furnished with four rows of numerous short and 

 laterally compressed spines, the upper two of which are a little 

 closer together than the others. Also the luunber and size of 

 s})ines in the two upper rows (about 32 on the last volution) are 

 ditlerent from those in the lower ones, those of the latter being- 

 very slightly larger in size and fewer in number. The upper- 

 most row of spines is concealed under the succeeding whorl. 

 There are also feeble traces of ribs on the upper and lower 

 surfaces of the whorl. The number of these equals that of the 

 spines on it. 



The septum has not been seen. 



