148 



locality belong ta the variety siib-archiaci, while the latter lot represent the- 

 variety verncuiLi. 



In addition to these, there are several specimens belonging to this- 

 species that were bought by Prof. Y. Yabe of the Women's Higher Normal 

 School in Tokyo during his journey in China. Their exact locality, therefore,, 

 is not known. They too will be mentioned together wath those collected by 

 Yamada, as each of them represents one or other of the varieties of 

 Pellizzari. 



Spirifcr disjunctiis and its varieties were all placed under the denomi- 

 nation of 5/!'/;'/yVr brodiV^'Eti]. by Loewe. It is not, however, very clear 

 why he preferred Wenjukoff's nomenclature to either that of Sowerby or that 

 of MuRCHisoN, which had been so popularly used in palaeontology. Besides, 

 his material seems to the present writer so very poor that it is rather danger- 

 ous to give any definite name to it. The present writer would like to omit 

 it from the synonymy of Spirifcr disjunctiis, or, at most, he would regard 

 it as an incomplete specimen of a Spirifcr disjunctiis sens. lat. 



Mansuy described two forms from Yun-nan, one Spirifer verneuili 

 and the other as a new variety, to which he gives the name yiuinancnsis. 

 The former seems to represent a type very near to Spirifcr disjunctus var. 

 ^wM^z/ of Pellizzari., while the latter is nothing but ^ Spirifcr disjunctus 

 var. sub-arcJiiaci, which is also represented in the present material. 



A Persian variety described by Cowfek Reed represents a type of 

 Spirifcr disjunctiis \2S. lonsdalci, although the detail of its characteristics is- 

 quite obscure. To this was reasonably united a form mentioned by 

 Hudleston as Spirifcr cxtcnsiis Sow. It is because of its having extra-- 

 ordinarily strong ribs and grooves on each side of the sinus and the fold re- 

 spectively that a new varietal name pcrsica was proposed by Reed. Besides, 

 the ribs on the fold and sinus, he says, are fewer than in an ordinary adult 

 example of the species. The same thing occurs in one of the varieties to be 

 described below — the variety vcrncuili. 



It is not, however, a peculiarity which is confined to this variety alone,, 

 but there is in general such a tendency in the fossils of this group.- In other: 



