GEOLOGY AND PALEONTOLOGY OF THE CANAL ZONE. 63 



UVIGERINA CANARIENSIS d'Orbigny, variety. 



Plate 22, fig. 6. 



A larger and much stouter, entirely smooth variety as shown in the 

 above figure was found in material from U.S.G.S. No. 6010, lower 

 part of Culebra formation, in dark clay, north of Pedro Miguel 

 Locks. Cat. No. 324636, U.S.N.M. 



UVIGERINA PYGMAEA d'Orbigny. 



Plate 22, fig. 4. 



"' Polymorplia Pineiformia " Sot.dani, Testaceographia, vol. 1, pt. 2, 1791, 



pi. 130. tigs, ss, tt. 

 Uvigerina pigmea d'Orbigny, Ami. Set. Nat., vol. 7, 1826, p. 269, pi. 12, figs. 



8, 9 ; Modeles, 1826, No. 67. 

 Uvigerina pygmaea d'Orbigny, Foram. Foss. Bass. Tert. Vienne, 1846, p. 190, 



pi. 11, figs. 25. 26. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 



1884, p. 575, pi. 74, figs. 11-14. 



Description. — Test subcylindrical, triserially spiral, chambers nu- 

 merous, inflated, sutures deep ; wall ornamented by numerous longi- 

 tudinal costae, those of each chamber usually independent of those 

 of adjacent chambers; aperture with a short cylindrical neck and 

 phialine lip. 



Length 0.75 mm., breadth 0.32 mm. Cat. No. 321637#, b, c, 

 U.S.N.M. 



Specimens referable to this species occurred in the Culebra forma- 

 tion at U.S.G.S. No. 6012a, in lower dark clay beneath lower con- 

 glomerate, one-fourth mile south of Empire Bridge, Gaillard Cut, 

 and No. 60126? in clay and sandstone just below conglomerate at 

 base of green clay one-half to three- fourths of a mile north of Con- 

 tractors Hill, Gaillard Cut. 



Specimens of a slightly different character were abundant at No. 

 6035, Gatun formation, in gray-green, fine-grained sandy shell marl, 

 vicinity of Mindi Hill. 



UVIGERINA TENUISTRIATA Reuss. 



Plate 22, fig. 7. 



Uvigerina striata Reuss, Sitz. Kais. Akad. Wiss. Wien, vol. 52. 1870, p. 485 — 

 von Schlicht, Foram. Pietzpuhl, 1870, pi. 22, figs. 34-36.— H. B. Brady, 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 574, pi. 74, figs. 4-7. 



Description. — Test subcylindrical, chambers spirally arranged, tri- 

 serial at least in the early portion, later portion sometimes biserial 

 and more slender ; chambers inflated, sutures deep, walls ornamented 

 by numerous longitudinal costae. except the last chambers, which tend 

 to become smooth or nearly so; aperture with a short tubular neck 

 and often a phialine lip. 



