6o 



1901. Poramhonites intcrccdcns, MARXELLr (noii Pander): — Ditto, p. 304. 



pi. IV., figs. 13-16. 

 191 3. Spirifcr [Martinia) poloi, Pellizzari : — Fossili Paleozoici Antichi 

 dello Scensi (Cina). Rivista Ital. di Paleontologia, vol. XIX., 

 p. 45. pi. I., figs. S-io. 

 191 3. Triplecia poloi, Wei.ler : — A Report on Ordovician Fossils col- 

 lected in Eastern Asia in 1903-04. Research in China, voJ. III., 

 p. 281. pi. 25, figs. 7-9. 

 This species was first recorded by Martelij in 190 1, from Lean-shan in 

 the Tsin-ling mountains. The second material was also collected at the same 

 locality, and was examined by Pellizzari. In the province of Sze-chuan the 

 same species was gathered by the Carnegie expedition two or three years 

 later, a description of it having appeared quite recently. Almost at the same 

 time as this third discovery, Prof K. Yamada of the Kyoto Imperial University 

 obtained several exceedingly well preserved examples of the species in the 

 neighbourhood of I-chang-fu, in the province of Hu-pei. It is this material 

 from Hu-pei that the writer is about to describe. 



The species was first introduced by Martelli as belonging to the genus 

 Schizopiiorin. According to Pellizzari, however, this species is by no means 

 a ScJiizoplioria, because there are hardly any smooth form in the genus 

 Orthis, and besides, he believes he has found the characteristics of a Spirifcr 

 in the dental apparatus. Thus, he says, " e ciu tanto per Ic robuste Limine 

 denlarie della grandc valva, quanto per I'apparato di sostegno del lofoforo 

 nella valva dorsale." In liis plate is figured a specimen that has its dorsal 

 valve polished away at its visceral portion (pi. I., fig. 9). The present writer 

 is not certain whether the section of the spirals is represented on the cut end 

 of the shell. Neither is anything said about this i^y Pellizzari. One of the 

 Hu-pei specimens was prepared by the writer for the purpose. Its dorsal 

 valve was transversel}' polished s<3 as to reveal the interior of the visceral 

 portion (fig. 4). On the polished surface nothing but two short, somewhat 

 divergent dental plates are shown, and there is no trace of spirals recognizable. 

 i3esides, the mesial fold of the shell is so very conspicuous that no Marii>iia 

 seems to be comparable with it. 



