44 



BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



Genus ANOMALINA d'Orbigny, 1826. 



Anomalina d'Orbigny (type, A. punctulata d'Orbigny), Modeles, 1826, No. 67, 

 p. 282.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 671. 



Description. — Test nautiloid, composed of numerous chambers, 

 but slightly involute; the two faces usually much alike, biconvex or 

 slightly unsymmetrical; aperture a narrow curved slit at the base 

 of the final chamber. 



This genus consists of but few living 

 species. It is distinguished from Trunca- 

 tulina, mainly, by the biconvex character 

 of the test. 



ANOMALINA ARIMINENSIS (d'Orbigny). 



Plate 19, fig. 1. 



Planulina ariminensis d'Orbigny, Ann. Sci. Nat., 

 vol. 7, 1826, p. 280, pi. 14, fig. 1-3; Modeles, 

 No. 49. 

 Anomalina ariminensis H. B. Brady, Rep. Voy. 

 Challenger, Zoology, vol. 9, 1884, p. 674, pi. 

 93, figs. 10, 11— H. B. Brady, Parker, and 

 Jones, Trans. Zool. Soc, vol. 12, 1888, p. 

 228, pi. 45, figs. 20-22.— Terrigi, Mem. Com. 

 Geol. Italia, vol. 4, 1891, p. 107, pi. 4, fig. 

 12. — Fornasini, Mem. Accad. Sci. Inst. Bo- 

 logna, ser. 5, vol. 5, 1895, p. 13, pi. 4, fig. 

 37.— Flint, Rep. U. S. Nat. Mus., 1897 

 (1899), p. 335, pi. 79, fig. 1.— Millett, Journ. 

 Roy. Micr. Soc, 1904, p. 495. 

 Planorbulina ariminensis G. M. Dawson, Can. 

 Nat., ser. 2, vol. 7, 1874, p. 253, fig. d.— Goes, 

 Kongl. Svensk. Vet. Akad. Handl., vol. 25, 

 No. 9, 1894, p. 91, pi. 15, figs. 784, 785. 

 Planorbulina tuberosa, var. ariminensis Goes, 

 Kongl. Svensk. Vet. Akad. Handl., vol. 19, 

 pt. 4, 1882, p. 98, pi. 7, figs. 228-233. 

 Description. — Test much compressed laterally, composed of numer- 

 ous chambers all clearly visible from the dorsal side, and a part from 

 the ventral side besides the last formed coil, nine or ten chambers 

 in the last formed coil, chambers becoming elongate, comma- 

 shaped; the sutures limbate; periphery squarely angled; wall coarsely 

 perforate ; aperture somewhat oblique on the ventral half of the cham- 

 ber in face view. 



Diameter about 0.6-1.2 mm. 



Distribution. — Brady records this species from Hongkong Harbor. 

 Bagg had it from two Albatross stations H4430 in 1,544 fathoms 

 and H4567 in 1,307 fathoms off the Hawaiian Islands. 



I have had typical specimens from but few stations, Albatross D3346 

 in 786 fathoms off the coast of Oregon and Nero 1065 in 1,321 fathoms 

 between Guam and Japan. 



Fig. 49.— Anomalina ariminensis 

 (d'Orbigny). (Fromd'Orbigny's 

 type figures of 1826.) o, ven- 

 TRAL view; 6, side view; c, dor- 

 sal VIEW. 



