DESCRIPTIVE CATALOGUE OF RECENT FORAMINIFERA. 299 



segment, the third by the free margin of the preceding segment. 

 Aperture triangular, toothed. Length, about 0.G25 mm. (/y- inch). 

 Locality. — Oft" Windward Islands (station 2751), G87 fathoms. 



MILIOLINA SUBROTUNDA Montagu. 

 (Pl:ite44, flg.6.) 



A small, thick, rounded, suborbicular shell, with three visible seg- 

 ments; surface slightly wrinkled transversely; terminal segment not 

 projecting at the oral extremity: orifice large, with a prominent 

 valvular tooth. Diameter, about 0.4 mm, {-^^ inch). 



Locality. — Straits of Yucatan, 222 fathoms. 



MILIOLINA VALVULARIS Reuss. 

 (Plate 44, fig. 5.) 



A rather large, stout shell, having the same form and arrangement 

 of segments as M. circularis. The distinguishing feature of this species 

 is the aperture, which is a very narrow, irregularly bent, sometimes 

 branching slit, with puckered lips. 



Locality. — Cape Hatteras (station 2115), 843 fathoms. 



MILIOLINA BUCCULENTA Brady. 

 (Plate 45, fig. 1.) 



Large, subglobular, slightly and symmetrically compressed at the 

 sides; especially characterized by the position of the three final and 

 only visible segments in very nearly the same plane; aperture a long, 

 arched slit across the face of the last segment. 



Locality. — North Atlantic. 



MILIOLINA LABIOSA d'Orbigny. 

 (Plate 45, fig. 3.) 



Small, thin-shelled; segments few, inflated, often somewhat distorted, 

 irregularly arranged; aperture large, crescent-shaped. 

 Locality. — Straits of Yucatan (station 2358), 222 fathoms^ 



MILIOLINA INSIGNIS Brady. 



(Plate 45, fig. 2.) 



Has the form of M. trigonula, or more often of M. circularis. The 

 peculiarity of the shell is the surface ornamentation with fine, more or 

 less prominent, parallel ribs. 



Localities. — West coast of Cuba and the Caribbean Sea (stations 

 2352, 2150), 463 and 382 fathoms. 



