56 



DiscDceras sp. indet. 



PI. XIX., Fig. 5 ; PL XXVII., Fig. 6. 



The figure shows another species of the same genus which is dis- 

 tinguished from D. eiirasiaticinn by its relatively wider umbilicus, oblong 

 whorls, and considerably weaker surface sculpture ; the first and third features 

 distinguish it also from D. vobeeki. Too imperfect for further specific 

 identification. 



Locality : — No-lu-ping, Tung-hu-hsien, prov. Hu-pei (Usui Coll.) 



Lituitidae. 



Litiiites, Breyn. 

 Lituites (Ancisti'oceras) angelini Boll. 



PI. XXVII., Figs. 4a-b. 



191 I. Lituites i^rhicistroccras) angrli]ii Frecu : in Ricuthofen's China, 

 vol. v., p. 5. 



Shell cyhndro-conical, measuring 76 mm. in length, 21 mm. and 10 

 mm. in the diameter of the larger and smaller ends ; circular in cross section. 

 Septa concave, about 5 mm. apart ; siphuncle very narrow, subcentral. Septal 

 neck well developed, about as long as half the septal distance. Surface with 

 numerous very fine striae showing the undulation characteristic of the shell 

 of Lituites. 



I was not able to obtain from any library in Japan Bell's and Re- 

 mele's papers with the description of this species : hence, in the specific identi- 

 fication of this .specimen, I simply follow Frech who gives the following 

 account of it. 



" Fin Bruchstiick von I-chang, das man auf den ersten Blick fur ein 

 Ortlioccras halten wiirde, zeigt auf der Aussenseite die bezcichnende Skulptur 



