ART. 6 FORAMINIFERA: POLYMORPHINIDAE — CUSHMAN AND OZAWA 17 

 EOGUTTULINA LIASSICA (Strickland) 



Plate 1, figures 2 a-c 



Polymorphina liassica Strickland, Quart. Journ. Geol. Soc, vol. 2, 1846, 



p. 30, fig. b (in text). 

 Polymorphina metensis Terquem, Quatr. Mem. Foram. Lias, 1864, p. 301, 



pi. 13, figs. 38a,fe. — Terquem and Berthelin, Mem. Soc. Geol. 



France, s^r. 2, vol. 10, pt. 3, 1875, p. 68, pi. 6, figs. la-j. 

 Globulina laevis Schwager, Wurttemberg, Naturwiss. Jahreshefte, vol. 21, 



1865, p. 137, pi. 7, figs. 5, 25. 



Test elongated fusiform; chambers few, elongated, embracing, 

 arranged in a triserially spiral series, each succeeding chamber 

 removed farther from the base; sutures not depressed, distinct; 

 wall smooth; aperture radiate. 



Length 0.35 mm.; breadth 0.15 mm. 



The present species was described by Strickland from the Liassic 

 formation at Wainlode Cliff, Gloucestershire, England. We have a 

 single specimen from the Liassic in Gloucestershire which is very 

 similar to Strickland's species in general aspect. The only difference 

 is that our specimen is slightly more slender. 



In general outline it is very similar to the Cretaceous Globulina 

 prisca, and it is almost impossible to separate them at a glance. The 

 arrangement of chambers is seeminglj^ different, that of the present 

 species being spiral from the first chamber, while in that of Globulina 

 prisca the first chambers are completely surrounded by the following 

 ones. This may be a primitive form of an elongated Globulina, but 

 for the present, we prefer to place it in Eoguttulina. 



Polymorphina metensis described by Terquem from the Middle Lias 

 of Saint-Julien-les-Metz and also by him with Berthelin from the 

 Lower Lias of d'Essey-les-Nancy seems to be very close to the present 

 species, although its chambers are much more embracing. 



Globulina laevis from the Jurassic in Germany has a small (0.3 mm. 

 in length) fusiform, slightly compressed test, and in its general fea- 

 tures it is very similar to the present species. 



Polymorphina oolithica from the Jurassic of Conflans and Fontenoy 

 resembles the present species in general outline, but it is compressed. 

 It may be different from the present species. 



Distribution. — All the records of this species are from the Jurassic. 



EOGUTTULINA POLYGONA (Terquem) 



Plate 1, figures 1 a-c 



Polymorphina polygona Terquem, Quatr. Mem. Foram. Lias, 1864, p. 305, 

 pi. 14, figs. 16-20, 21-41 (?). 



Test somewhat compressed, elongated, acute toward the apertural 

 end ; chambers longer than wide, more or less triangularly compressed, 

 arranged in a spiral series, each succeeding chamber farther removed 

 92709—30 2 



