58 BULLETIN" 103, UNITED STATES NATIONAL MUSEUM. 



Genus VIRGULINA d'Orbigny, 1826. 



VIRGULINA SQUAMOSA d'Orbigny. 



Plate 21, fig. 6. 



Virgulina squamosa d'Oebigny, Ann. Sci. Nat., vol. 7, 1826, p. 267.— Cush- 

 man, Bull. 71, U. S. Nat. Mus., pt. 2, 1911, p. 91, fig. 145a, h. 



Description. — Test elongate, tapering gradually to the apical end 

 and again toward the apertural end, chambers comparatively few, 

 inflated, sutures distinct, wall smooth, aperture a comma-like slit at 

 the base of the last formed chamber. 



Length 0.7 mm., breadth 0.25 mm. Cat. No. 324625a, b, c, U.S.N.M. 



Specimens of this species occurred in the Gatun formation at the 

 following three stations, U.S.G.S. No. 6033c, marl from second bed 

 from bottom, just below lower clay, Gatun Section, relocated line 

 Panama Kailroad; U.S.G.S. No. 6035, in gray-green, fine-grained, 

 sandy shell marl vicinity of Mindi Hill, and U.S.G.S. No. 6036, in 

 dark-colored fine-grained, sandy clay marl, at Monkey Hill, Mount 

 Hope Station. 



At none of these stations were more than a few specimens found 

 but all seem referable to this species. 



Family LAGENIDAE. 

 Genus LAGENA Walker and Boys, 1784. 



LAGENA STRIATA (d'Orbigny), var. STRUMOSA Reuss. 

 Plate 21, fig. 7. 



Lagena strumosa Reuss, Zeitschr, geol. Ges., 1858, p. 434 ; Sitz, Akad. 



Wiss. Wien, vol. 46, pt. 1, 1862 (1S63), p. 328, pi. 4, fig. 49. 

 Lagena striata (d'Oebigny), var. strumosa Cushman, Bull. 71, U. S. Nat. 



Mus., pt. 3, 1913, p. 20, pi. 7. figs. 7-10. 



Description. — Test clavate or subglobular, the body portion orna- 

 mented with numerous longitudinal raised costae, apical end with a 

 single stout spine ; neck short and stout, typically with a phialine lip 

 and transverse costae. 



Diameter 0.5 mm. Cat. No. 324626, U.S.N.M. 



A single specimen of this variety was obtained in material from 

 U.S.G.S. No. 6010, from the lower part of the Gatun formation, dark 

 clay, north of Pedro Miguel Locks. This is the only representative 

 of the genus in the whole series of samples examined. The speci- 

 men lacks the neck except the base and the tip of the apical spine. 



