GEOLOGY AND PALEONTOLOGY OF THE CANAL ZONE. 79 



southern end of switch at Bohio Eidge Station, relocated line of the 

 Panama Kailroad. Another much flattened glauconitic specimen 

 from this last station is also referred here. 



QUINQUELOCULINA CONTORTA d'Orbigny. 



Plate 29, figs. 2a-o. 



QuinquelocuUna contorta d'Orbigny, Forani. Foss. Bass. Tert, Vienne, 1846, 

 p. 298, pi. 20, figs. 4-6. 



Description. — Test about twice as long as broad, chambers rather 

 narrow and elongate, in end view polygonal, peripheral margin 

 broadly curved, sides nearly at right angles to the peripheral face 

 with a sharp angle at the junction ; sutures deep, apical end and initial 

 end of final chamber truncated ; aperture rounded with a single tooth ; 

 wall smooth. 



Length 0.65 mm. Cat. l\ T o. 324714, U.S.KM. 



The only material of this species was obtained froin U.S.G.S. 5850, 

 among loose shells and marl, from near Mount Hope, from ditch 

 through swampy ground, about one-fourth mile from present sea 

 beach and 6 to 8 feet above high tide (Pleistocene). 



QUINQUELOCULINA AUBERIANA d'Orbigny. 



Plate 29, figs. 3a-c. 



QuinquelocuUna auberiana d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. 



Cuba, 1839, Foraminiferes, p. 193, pi. 12, figs. 1-3. 

 MiUolina auberiana H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 



p. 162, pi. 5, figs. 8, 9. 



Description. — Test slightly longer than broad, periphery of the 

 chambers angled with a concave area at each side of the angle, sutures 

 somewhat depressed, distinct; wall smooth; aperture with a single, 

 usually simple, occasionally slightly bifid tooth. 



Length about 1 mm. Cat. No. 324715, U.S.N.M. 



Two specimens of this species were obtained in material from 

 U.S.G.S. 5850, among loose shells and marl, from near Mount Hope., 

 from ditch through swampy ground, about one-fourth mile from pres- 

 ent sea beach and 6 to 8 feet above high tide (Pleistocene) . This is a 

 common species of the shallow-water littoral of tropical seas. 



QUINQUELOCULINA UNDOSA Karrer. 



Plate 30, figs. la-c. 



QuinquelocuUna undosa Karker, Sitz. Akad. Wiss. Wien, vol. 58, abth. 1, 



1868, p. 150, pi. 3, fig. 1. 

 MiUolina undosa Karrer, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 176, 

 pi. 6, figs. 6-8. 

 Description. — Test elongate, two or two and a half times as long as 

 wide; chambers sub-polygonal, the angles more or less irregular- giv- 



