4 PROCEEDINGS OF THE NATIONAL MUSEUM vol.75 



48-50; figs. 11, 12 (in text). — Cushman, Proc. U. S. Nat. Mus., vol. 56, 

 1919, p. 639; BuU. 100, U. S. Nat. Mus., vol. 4, 1921, p. 460; U. S. Geol. 

 Survey, Prof. Paper 133, 1923, p. 57, pi. 8, figs. 6, 7; Publ. 344, Carnegie 

 Inst. Washington, 1926, p. 82. 

 Miliolina rohtnda Millett, Journ. Roy. ]\Iicr. Soc, 1898, p. 267, pi. 5, figs. 

 15, 16. — Heron-Allen and Earl.\nd, Trans. Micr. Soc. London, vol. 20, 

 1915, p. 568, pi. 42, figs. 27-30. 



Test somewhat longer than wide; chambers distinct, somewhat 

 inflated; periphery broadly rounded; sutures very slightly depressed, 

 distinct; wall smooth, polished, occasionally with transverse wrinkles; 

 apertural end somewhat contracted with a slightly thickened lip, the 

 aperture itself rounded with a single bifid tooth projecting somewhat 

 above the outline of the aperture. 



Length 0.85 mm., breadth 0.60 mm. 



This species apparently has a very wide distribution as it is recorded 

 from the Mediterranean, the West Indian region, and from the Indo- 

 Pacific. 



TRILOCULINA CRASSA (?) (d'Orbigny) 



Plate 2, figures 1 a-c 



To this species are referred a few specimens with smooth surface 

 or very slightly costate of the form shown in the figure. 



TRILOCULINA SUBROTUNDA (Montagu) (?) 



Plate 1, figures 6 a-c 



There are a few rather small specimens which although they are 

 triloculine fit rather closely the characters given for this species. In 

 some respects they resemble Triloculina circularis Bornemann but are 

 not in the usual form of that species. 



Family OPHTHALMIDIIDAE 



Genus CORNUSPIRA Schultae, 1854 



CORNUSPIRA INVOLVENS (Reuss) 



Plate 2, figure 3 



Operculina involvens Reuss, Denkschr. Akad. Wiss. Wien, vol. 1, 1850, p. 



370, pi. 46, fig. 30. . 

 Cornuspira involvens Reuss, Sitz. Akad. Wiss. Wien, vol. 48, Abt. 1, 1863, p. 



39, pi. 1, fig. 2; vol. 50, Abt. 1, 1864, p. 450. 



Test nearlj^ circular in side view, consisting of a proloculum and a 

 long closely coiled, planispiral second chamber of nearly equal diameter 

 throughout, slightly involute ; suture distinct, somewhat depressed; 

 wall smooth and polished, occasionally showing slight lines of growth; 

 aperture nearly the size of the open end of the tube. 



Diameter 0.45 mm. 



There are a few specimens of this simple, widely distributed species 

 in the material examined. 



