NO. 4 CUSHMAN AND MCCULLOCH: SOME VIRGULININAE 223 



Bull. 104, U.S. Nat. Mus., pt. 3, 1922, p. 36, pi. 7, fig. 3.— Heron-Allen 

 and Earland, Journ. Linn. Soc. Zool., vol. 35, 1924, p. 622; Journ. Roy. 

 Micr. Soc, 1924, p. 145. — Cushman, Bernice P. Bishop Museum Bull. 

 No. 27, 1925 (1926), p. 125.— Chapman, New Zealand Geol. Survey 

 Pal. Bull. No. 11, 1926, p. 40, pi. 9, fig. 6; Rep'ts of Great Barrier Reef 

 Comm., vol. 3, 1931, pp. 38, 39 (lists). 



Loxostonia liinbatum Cushman, Special Publ. 9, Cushman Lab. 

 Foram. Res., 1937, p. 186, pi. 21, figs. 26-29. 



Test elongate, 3 or 4 times as long as broad, much compressed, taper- 

 ing at the ends, middle portion with the sides nearly parallel, thickest 

 along the median line thence thinning toward the subacute lateral mar- 

 gins, whole test usually somewhat twisted ; chambers rapidly increasing in 

 height as added, in the adult as high as wide, slightly inflated; sutures 

 very distinct, strongly limbate, strongly curved backward ; wall cal- 

 careous, smooth, coarsely perforate; aperture elongate, oval, terminal in 

 the adult. Length up to about 1.00 mm.; breadth 0.35-0.40 mm.; thick- 

 ness 0.20-0.25 mm. 



The types of this species are from off the Hawaiian Islands. There 

 are many records for it, almost entirely in warm, fairly shallow water. 



Stations: 221, 222, 311, 312, 314, 319, 421, 422, 423, 427, 460, 463, 

 466, 469, 470, 500, 545, 557, 2015, 2081. 



Distribution. — OR Clarion and Socorro islands in 4 to 28 fms. ; ofif 

 Costa Rica and Panama in 3 to 15 fms.; off Clipperton, James, South 

 Seymour, and Charles islands, Galapagos, in 10 to 16 fms.; off Colombia 

 and Ecuador in 10 to 12 fms. 



Loxostoma limbatum (H. B. Brady), var. costulatum (Cushman) 



Plate 28, Figs. 9, 10 



Bolivina limbata H. B. Brady, var. costulata Cushman, Publ. 311, 

 Carnegie Instit. Washington, 1922, p. 26, pi. 3, fig. 8; Bull. 104, U.S. 

 Nat. Mus., pt. 3, 1922, p. 37; Publ. 342, Carnegie Instit. Washington, 

 1924, p. 19, pi. 5, figs. 2, 3, 6; Publ. 344, 1926, p. 76; Bernice P. Bishop 

 Museum Bull. No. 27, 1925 (1926), p. 125. 



Loxostoma limbata (Brady), var. costulata Palmer and Bermudez, 

 Mem. Soc. Cubana Hist. Nat., vol. 9, 1935, p. 248.— Cushman, Special 

 Publ. 9, Cushman Lab. Foram. Res., 1937, p. 187, pi. 21, figs. 30, 31. 



Bolivina limbata Chapman, Journ. Linn. Soc. Zool., vol. 28, 1901, p. 

 409, pi. 36, fig. 12. — Heron-Allen and Earland, Trans. Zool. Soc. Lon- 

 don, vol. 20, 1915, p. 646, pi. 50, figs. 1-4. 



