26 PROCEEDINGS OF THE NATIONAL MUSEUM vol.77 



abnormal specimen having an irregular growth of chambers. There 

 is some doubt about the holotype specimen of Glohulina irregularis 

 preserved in the Museum of Paris, because the specimen is also 

 labelled " Guttulina communis, var.," and it is equilateraily triangular 

 in outline instead of globular as figured by d'Orbigny. It would be 

 considered that d'Orbigny's figures for Glohulina irregularis are much 

 modified from the specimen now in the museum as in the case of 

 Guttulina problema and Guttulina communis in the same paper. 

 There is no specimen like the Glohulina irregularis figured by 

 d'Orbigny, either in the paratype specimens or among our topotypes. 

 Therefore, in this paper we take the specimen in the Museum at 

 Paris as the holotype and give the somewhat abnormal specimen 

 having the very inadequate name of Glohulina irregularis the priority 

 over several specific names given the specimens considered to be 

 identical with the present species. It is to be noted here that 

 Polymorphina irregularis d'Orbigny in the Cuban monograph is a 

 different species from Glohulina irregularis in the Vienna monograph 

 in which Glohulina is used as a genus. 



Guttulina dilatata Reuss recorded from the Vienna Basin Miocene in 

 1850 is different from Polymorphina dilatata described by the same 

 author in the following year 1851, and is a very good representation of 

 the present species. Reuss' Glohulina guttula and Guttulina semiplana 

 from Hermsdorf are the same, the former being a young and the 

 latter an adult. They are very close to Guttulina irregularis and are 

 placed in the synonymy. 



Guttulina centrata Terquem, having a rounded outline and much 

 involute chambers is approaching Sigmoidella. This is shown in 

 young stages of Guttulina irregularis.' It appears not to be well 

 drawn and is provisionally included in the present species. 



Polymorphina byramensis Cushman, one of the most common species 

 in the American older Tertiary, in its general features is closely related 

 to the present species. 



Distrihution. — This is one of the most common species of the Poly- 

 morphinidae. It ranges from the Cretaceous to the Recent, and geo- 

 graphically is also widely distributed. We have specimens from the 

 following localities referable to this species: 



Recent. — Italy, shore sand, Lido, Venice; Australia, shore sand, 

 Torquay, on Bass Strait, Victoria; New Zealand, off North Cape, 75 

 fathoms; off Oamaru, 50 fathoms; off the Big Eang, 98 fathoms; off 

 Poor Knights Islands, 60 fathoms; east coast United States, Alhatross 

 D2415, oft' the Carolina coast, 440 fathoms; D2262, south of New 

 England, 250 fathoms. 



Pliocene. — Island of Cyprus, Lanarka; Italy, Coroncina, near Siena; 

 Castel Arquato; Ponticello, near Bologna. 



