154 



realized in the material at the writer's hand. Especially, the area in the latter, 

 is rather upright although more or less strongly concave. In its generaL 

 habitus,, however, the writer's example is quite coincident with that of the. 

 Italian palaeontologist, and consequently the fossil is taken to be a form closely 

 approximate to the latter. If, however, there had been a number of speci- 

 mens of the same habitus collected from known localities, the writer might-. 

 have given a new varietal name to them. 



C) Spirifer disjunctus Sow. var. lonsdalei (Murchi on) Marteli.i. 



PI. XXIV., Fig. 4. 



1902. Spirifer vcrnciiili var. lonsdalei, Martelli (pars): — op. cit.,, 

 fig. 10. 



? 1 91 3. Spirifer disjunctus var. lonsdalei, Peluzzaki : — op. cit., p. 41. 



There are two examples of this variety at the author's disposal, both 

 having been bought in China, one (No. i) by Prof. Y. Yake and the- other 

 (No. 2) by Mr. S. Noda. In this paper only the former is pictured. 

 Mr. Noua's specimen was obtained by him in the province of Hu-nan. 



This fossil is characterized by several points. The outline of the shell is 

 trapezoidal, and is wider than long, with a long hinge line representing the 

 maximum width of the shell : the thickness is very inconspicuous : the area^ 

 is linear and very low. 

 Dimensions : — 



Length. Width. Thickness. Height of area. 



No. I. 22 mm. 34 mm. iS mm. ca. 4 mm. 



No. 2. 20 „ 31 » 12 „ ca. 4 „ 



Judjing from its description, the one examined by Pellizzari seems to 

 be coincident with that described and pictured by Martelli and also with- 

 those of the present writer. However, Pellizzari does not cite Martelli's 

 paper in the list of synonymy of his Spir. disjunctns var. vcrnev.ili. Neither 

 does he give any picture of his specimens. The writer is not able to decide 

 the matter here. 



