CErHALOrODA FROM THE HOKKAIDO. 7 



— T. Jiei'gerl Brongniart occurs in tlic deposits of the All)i;in, 

 Vraconiaii and Cenomanian ages of England (Chalk with green 

 grains at Chardstock), France (Cenomanian of Bavet, Anxon ; 

 Albian of Aignlun and Savoy), Austria, Switzerland and Italy. 

 This species has also been found in Algeria associated with 

 Turriliies costatus and Acanfhoceras rolo/if/r/e/i.^e, and in Condncia 

 together with BcJcinnHci< minlnnis Lister, PhyUocevd^ cfr, semi- 

 xtrhilum. D'OiîB. and Acanihoceras hitichiv'niin var. inoçatnhlquensh 

 Choffat. Stoliczka calls it a connnon fossil of the Utatur 

 group of Odium and Moravatur, South India. 



T. Mantelli has l)een met with in the Gray Chalk of Sussex 

 and the Tourtia of Essen. 



TURRILITES KOMOTAI m. 



Pis. I. and II. 

 Dimensions : — 



Height of th(^. 8i>ire. 18.0 cm. 



Diameter of the last volution. 18.0 ,, 



Width of the niiihiliciis. 6.0 ,, 



Height of the last whorl. G..3 „ 



Breadth of tlie last whorl. 7.0 „ 



Shell sinistral, composed of numerous contiguous whorls,^^ 

 rapidly increasing in size, with an apical angle of about 70°. 

 Whorls rounded externally, slightly convex on the upper and 

 concave on the lower snrface. Section of the whorl nearly el- 

 liptical, somewhat broader than high ; rather trapezoidal in the 

 last volution. Suture of the spire deep. Umbilicus moderately 



1) Only four volntinis are present in the specimen, three or four otliers near the apex 

 havina; been broken ud'. 



