64 BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



Peneroplis (Monalysidium) polita Chapman, Journ. Linn. Soc. Zool., vol. 28, 



p. 4, pi. 1, fig. 5 (?), 1900. 

 Monalysidium poliium Heron-Allen and Earland, Trans. Zool. Soc. London, 



vol. 20, p. 603, text-fig. 43G, 1915. — Cushman, Carnegie Inst. Washington 



Publ. 311, p. 80, pi. 13, fig. 4, 1922; Publ. 344, p. 84, 1926; U. S. Nat. Mus. 



Bull. 104, pt. 7, p. 44, pi. 15, figs. 11, 12, 1930. 



There are a very few specimens from scattered stations evidently 

 belonging to this species described by Chapman, None of the speci- 

 mens show the coiled early stages. The surface of the test is orna- 

 mented by beads arranged in longitudinal lines, and the apertural end 

 usually has a distinct neck. All the specimens are from shallow-water 

 stations as follows: Mokaujar Anchorage, Fiji; 12 fathoms, Levuka, 

 Fiji; 12 fathoms, Nairai, Fiji; 7 fathoms, Rotonga; 18 fathoms, Vavau 

 Anchorage, Tonga Islands; and Makemo Lagoon, Paumotu Islands. 



Subfamily Orbitolitinae 



Genus SORITES Ehrenberg, 1840 



Sorites Ehrenberg, Abh. Akad. Wiss. Berlin, 1838, p. 134, 1840. 

 Synonym : Orbitolites (part) of authors (not Lamarck) . 



Genotype. — By designation, Sorites dominicensis Ehrenberg. 



Test discoid, planispiral in the early stages at least of the micro- 

 spheric form, later annular, completely divided into chamberlets, 

 typically in a single layer, those of each annular chamber communi- 

 cating with the adjacent ones as with those of the preceding and 

 succeeding annular chambers; wall imperforate except in the very 

 early chambers ; apertures confined to a narrow band along the middle 

 of the periphery. Miocene to Recent. 



SORITES MARGINALIS (Lamarck) 



Orbulites marginalis Lamarck, Syst. Anim. sans Vert., vol. 2, p. 196, no. 1, 1816. 



Orbitolites marginalis W. B. Carpenter, Philos. Trans., vol. 174, p. 560, fig. 1 

 (in text), 1883; Rep. Voy. Challenger, "Orbitolites," p. 20, pi. 3, figs. 1-7; 

 pi. 4, figs. 1-5, 1883. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 p. 214, pi. 15, figs. 1-5, 1884.— Flint, U. S. Nat. Mus. Ann. Rep. for 1897, 

 p. 304, pi. 50, fig. 2; pi. 51, fig. 1, 1899.— Cushman, U. S. Nat. Mus. Bull. 71, 

 pt. 6, p. 92, pi. 38, figs. 1, 2, fig. 47 (in text), 1917. 



Sorites marginalis Cushman, U. S. Nat. Mus. Bull. 104, pt. 7, p. 49, pi. 18, figs. 

 1-4, 1930. 



Test thin, much compressed, circular in outline in the adult, the 

 whole test composed of a single layer of chambers, each with a single 

 layer of chamberlets throughout, early chambers in a spiral, later 

 extending back, finally meeting and in most of the chambers forming 

 annuli; aperture consisting of a single row of pores along the periphery 

 of the test. 



This species is not so common in our material as it is in the West 

 Indies, occurring commonly only at two or three of the stations in 



