6K) PROCEEDINGS OF THE NATIONAL MUSEUM vol.77 



GUTTULINA CAUDATA d'Orbigny 



Plate 6, figures 4, 5 



'GuUulina caudata d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 286, No. 16. — 

 FoRNASiNi, Boll. Soc. Geol. Ital., vol. 19, 1900, p. 137, fig. 2 (in text). 



Test unequally compressed, front view nearly an isosceles triangle, 

 mth broadly rounded base, the initial end with a spine; chambers 

 elongate, arranged in a clockwise, quinqueloculine series, each suc- 

 ceeding chamber nearly reaching to the base; sutures but little de- 

 pressed, distinct; wall smooth; aperture radiate. 



Length 0.32-0.48 mm.; breadth 0.20-0.35 mm.; thickness 0.08-0.15 

 mm. 



This is one of the species listed by d'Orbigny in 1826 and figured 

 much later by Fornasini. Its regular triangular outline with the 

 spine at the initial end are important features which will distinguish 

 GuUulina caudata. The quinqueloculine arrangement of the chambers 

 of the species is very regular. 



Distribution. — D'Orbigny listed it from the Adriatic Sea and as 

 fossil from France and Caste! Arquato. We have fossU specimens 

 from France from the Eocene, Lutetien of Parnes (Les Boves), 

 Va.udancourt, and Beauves. 



GUTTDLINA ADHAERENS (Olszewski) 



Plate 1, figures 9 a-c; Plate 6, figures 7 a, b 



Folyviofphina adhaerens Olszewski, Sprawodz. Kom. Fizyj. Akad. Umiej. 

 Krakovae, vol. 9, lS7o, p. 119, pi. 1, fig. 11. 



Test ovate, broadest below the middle, rounded at the base, acute 

 toward the apertural end; chambers clavate, arranged in an almost 

 quinqueloculine series, each succeeding chamber slightly removed 

 from the base; sutures but little depressed, distinct; wall smooth; 

 aperture radiate. 



Length 0.50-1.10 mm. ; breadth 0.35-0.80 mm. ; thickness 0.22-0.50 

 mm. 



The quinqueloculine arrangement of the chambers of the present 

 species na,s a tendency to become triserial. Accordingly a side view- 

 often shows only three chambers of which the middle one seems to be 

 much inflated and produced between the others. This appearance 

 is verjr characteristic of the species. 



Distribution. — Rather common in various Cretaceous deposits in 

 Em-ope, especially in the Chalkmarl and the Gault of England. We 

 have it also from the Cretaceous of Maastricht, Holland. 



