30 BULLETIN 11, UNITED STATES NATIONAL MUSEUM. 



Genus TRUNCATULINA d'Orbigny, 1826. 



Nautilus (part) Walker and Boys, Test. Min., 1784, p. 20. — Walker and Jacob, 



Adams Essays, Kanmacher's Ed., 1798, p. 642. 

 Serpula (part) Montagu, Test Brit., 1803, p. 515. 

 Truncatulina d'Orbigny, (type, T. lobatula Walker and Jacob) Ann. Sci. Nat., 



vol. 7, 1826, p. 279.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 



1884, p. 658. 



Description. — Test free or adherent, rotaliform, the ventral face 

 usually the more convex but passing into species which are nearly 

 biconvex; chambers usually visible from both sides, occasionally 

 with limbate sutures; wall either smooth or with raised papilla?, 

 occasionally with limbate margins, coarsely puncate; aperture usu- 

 ally a curved slit at the margin of the inner end of the chamber, often 

 with a definite lip. 



This genus includes a considerable variety of species and the 

 extreme forms are somewhat dissimilar but as a whole they form a 

 fairly unified genus. Certain groups have at times been segregated 

 with other generic names but except for two species which are here 

 placed under Siphonina it seems best to leave them under the genus 

 Truncatulina. 



TRUNCATULINA REFULGENS (Montfort). 



Plate 12, fig. 2. 



"Hammonia Balanus seu Balanoidea," Soldani, Testaceographia, vol. 1, pt. 1, 



1789, p. 58, pi. 46, figs, nn, oo. 

 Cibicides refulgens Montfort, Conch. Syst., vol. 1, 1808, p. 122. 



a v O>-*>^ b nJ c 



Fig. 33.— Truncatulina refulgens (Montfort). (Adapted from d'Orbigny, 1826.) a, ventral 

 view; b, dorsal view; c, side view. 



Truncatulina refulgens d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 279, pi. 13, 

 fig. 8-11; Modeles, No. 77. — Carpenter, Parker, and Jones, Introd. Foram., 

 1862, p. 201, fig. 32, E.— Parker, Jones, and BE. B. Brady, Ann. Mag. Nat. 

 Hist., ser. 3, vol. 16, 1865, p. 31, pi. 2, fig. 76.— H. B. Brady, Nat. Hist. 

 Trans. Northumberland and Durham, vol. 1, 1865-1867 (1867), p. 105, pi. 

 12, fig. 9a-c. — Parker, Jones, and H. B. Brady, Ann. Mag. Nat. Hist., 

 ser. 4, vol. 8, 1871, p. 176, pi. 12, fig. 139.— Terrigi, Atti Accad. Pont. Nuovi 

 Lincei, vol. 35, 1883, p. 197, pi. 3, fig. 40.— H. B. Brady, Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, 1884, p. 659, pi. 92, figs. 7-9. — Sherborn and Chapman, 



