164 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



Uvigerina auheriana, var. laevis — material examined. 



UVIGEKINA ACULEATA D'Orbigny. 



Uvigerina aculeata D'Okbigny, Foram. Foss. Bass. Tert. Vienne, 1846, p. 



191, pi. 11, figs. 27, 28.— H. B. Brady, Rep. Voy. Challenger, Zoology, 



vol. 9, 1884, p. 578, pi. 75, figs. 1, 2.— Wright, Ann. Mag. Nat. Hist., 



ser. 6, vol. 4, 1889, p. 449; Proc. Roy. Irish Acad., ser. 3, vol. 1, 1891, 



p. 487. 



The only Atlantic records referred to this species are as follows: 



East of Buenos Aires, 1,900 fathoms (3,475 meters) (H. B. Brady) ; 



and off the southwest coast of Ireland, 1,000 and 1,020 fathoms (1,829 



and 1,866 meters) (Wright). 



From the collections I have examined such forms as those figured 

 by Brady have been seen only from the Indo-Pacific. Wright's re- 

 mark of his specimens that " many of the specimens are intermediate 

 betw^een U. aculeata and U. pygmaea " would probably indicate that 

 he had the species I have in this paper named U. feregrina. 



UVIGERINA SEMICOSTATA, new species. 



Plate 42, figs. 1, 2. 



Description. — Test elongate, tapering, greatest breadth near the 

 apertural end, initial end broadly rounded; chambers numerous, 

 much inflated ; sutures distinct and much depressed ; wall ornamented 

 in the adult with numerous short, low, rounded costae, beginning 

 near the base of the chamber and extending up part of the way on 

 its surface, the upper part of the chamber smooth and unorna- 

 inented; aperture circular at the end of a short cylindrical neck 

 with a phialine lip. 



Length up to 0.70 mm. 



Distribution. — Type-specimens (U.S.N.M. Cat. No. 17612) from 

 Albatross station D2160, in 167 fathoms (305 meters), on the south- 

 western coast of Cuba. 



This is distinct from the other species of the western Atlantic in 

 the peculiar ornamentation of the very inflated chambers. 

 Uvigerina semicostata — material examined. 



