4 ART. ö. — H. YABE : 



VoLZ defines liis gemis Sumairina as follows : " Spindelför- 

 mige Fiisuliniden mit einem aus ^-4 lüngs- and querreifen beste- 

 henden Dachskelet." From this and the illustrations in his 

 paper, it is beyond doubt that Sumairina and Neoschwagerina 

 refer to the same group of Foraminifera. The only point in which 

 VoLZ differs from me is in regarding Schtoagerina craticulifera 

 Schwager as a Doliolina}^ and hence making a generic distinction 

 between this species and Sumairina Annae. On the contrary, I 

 am inclined to treat Samatrlna Aiinao and Scliwagerina craliculi- 

 fcra together as one group, quite distinct from DoUolina wliose 

 type is D. lepida. 



There is a species of Keoschwagcr'uia — X. glohosa sp. nov.- 

 in the upper complex of the limestones at Akasaka, possibly a 

 variety of X. craticulifera ; it possesses more numerous transverse 

 septa than the type form in the lower complex, the longer and 

 shorter septa being alternate ; the same can be said of the auxi- 

 liary septa (PI. I., lig. 'j). Such being the case, I cannot help 

 thinking that the ' Dachskelet ' of Sumatrlna Annae is but a 

 shortened structure of the auxiliary and the transverse septa. If 

 I am right, it is clear that Sumatrlna is a synonym of Xeo- 

 schivagerina. It is much to be regretted that Volz made no refer- 

 ence to S. craticulifera in describing his Sumairina. 



According to Dr. G. H. Girïy, his new genus Triiicites is 

 distinguished from Fusulina. by having the septa " for the' most 

 part straight and not fluted except in the immediate vicinity of 

 tlie axis, so that the greater portion of each chamber is not 

 divided into chamberlets." The genotype is T. secalicus Say sj). 

 from the Coal Measure of the Mississippi valley. I ' would here 



1) Ditto, p. 21. 



