44 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



QUINQUELOCULINA SUBARENARIA, new species. 



Plate 10, figs. 1, 2. 



Description. — Test one and one-half times as long as wide, cham- 

 bers distinct, sutures slightly depressed, peripheral margin broadly 

 rounded, occasionally almost flattened, sides of chambers flattened 

 or slightly concave, wall of the peripheral face smooth and polished, 

 the sides arenaceous to the sutures, line between the side and periph- 

 eral faces usually somewhat irregular, apertural end slightly ex- 

 serted, with a slight nearly circular neck, with a thin lip and a simple 

 tooth, basal end of the last-formed chamber extending prominently 

 beyond the preceding ones. 



Length, up to 1.75 mm. 



Type-specimen.— (No. 9159, U.S.N.M.) from 13 fathoms off Sin- 

 gapore. There were numerous other specimens of this species, with 

 the type all of the same character. 



QUINQUELOCULINA ARENACEA (Rhumbler). 



Plate 17, figs. 3, 4. 



Miliolina arenacea Rhumbler, Zool. Jahrb., Abteil. Syst., vol. 27, 1907, p. 43, 

 pi. 3, figs. 24, 25. 



Description. — Test free, elongate, elliptical, length about twice the 

 width, usually quinqueloculine chambers narrow, so that sometimes 

 as many as 6 or 7 chambers are visible from the exterior; the apertural 

 end sharply contracted into a short neck at the end of which is the 

 slitlike aperture; wall exteriorly composed of calcareous granules, 

 hiding the calcareous basal shell material. 



Distribution. — This species was described by Rhumbler from 

 numerous specimens in the shore sands of Laysan. 



This species differs from Q. alveoliniformis, which is somewhat 

 resembles, in the simple aperture, the more elliptical form pointed 

 ends and thickly set grains on the exterior. 



QUINQUELOCULINA SEMINULUM (Linnaeus). 

 Plate 11, fig. 2. 



Serpula seminulum Linnaeus, Syst. Nat., ed. 12, 1767, p. 1264, No. 791; 13th 



(Gmelin's) ed., 1788, p. 3739, No. 2. 

 Quinqueloculina seminulum d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 303, 



No. 44. 

 Miliolina seminulum Williamson, Rec. Foram. Great Britain, 1858, p. 85, 



pi. 7, figs. 183-185. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 



1884, p. 157, pi. 5, figs. 6a-c. 



Description. — Test somewhat longer than broad, smooth, peri- 

 pheral margins rounded, sutures distinct, apertural end not exserted, 

 aperture fairly large, oval, with a simple tooth becoming bifid at the 

 free end. 



Length, up to 1.5 mm. 



