104 



BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



in 469 fathoms; D5018, in 100 fathoms in the Okhotsk Sea; and 

 D4998 in 66 fathoms in the Gulf of Tartary off the southwestern 

 coast of Sakalin Island, bottom temperature 35.9° F. 



This species seems to be distinct from H. canariense and may be 

 distinguished by its broader form, more deeply excavated umbilici, 

 and the wider, flattened chambers. 



HAPLOPHRAGMOIDES ROTULATUM (H. B. Brady). 



Eaplophragmium rotulatum H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 1881, 

 p. 50; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 306, pi. 34, figs. 5, 0.— 

 Chapman, Proc. Zool. Soc. London, 1895, p. 16. — Egger, Abh. kon. bay. 

 Akad. Wiss. Miinchen, vol. 18, 1893, p. 261, pi. 5, figs. 43, 44. 



Description. — Test nautiloid, planospiral, composed of about three 

 coils, wall fairly thick, of rather coarse sand particles, slightly rough 

 on the exterior, chambers very broad and low, the peripheral margin 

 much flattened, somewhat involute but the preceding coils exposed 

 at the umbilical region, deeply concave on each side at the umbilici; 

 chambers about nine in the last-formed coil, but rather indistinct 



Figs. 156-157.— Haplophragmoides rotulatum. X 50 (after Brady), a, a, front views; 



6, 6, APERTURAL VIEWS. 



when viewed from the exterior; aperture a narrow slit at the base of 

 the apertural face; color brown. 



Diameter 0.56-0.75 mm. 



Distribution. — Brady gives but a single North Pacific station, Chal- 

 lenger station 244 in 2'900 fathoms, but the volume on the "Sum- 

 mary of Results" adds two Challenger stations, 237 in 1,875 fathoms 

 and 246 in 2,050 fathoms. The only specimen I have seen referable 

 to this species is a single one from the coast of California, Albatross 

 station H2681 in 486 fathoms, and this may perhaps be an extremely 

 broad form of H. scitulum. 



HAPLOPHRAGMOIDES GLOMERATUM (H. B. Brady). 



Lituola glomerata H. B. Brady, Ann. Mag. Nat. Hist., ser. 5, vol. 1, 1878, p. 



433, pi. 20, figs. la-c. 

 Haplophragmium glomeratum Wright, Proc. Belfast Field Club, 1880-81 (App.), 



p. 180, pi. 8, figs. 1, la. — H. B. Brady. Denkschr. kais. Akad. Wiss. Wien, vol. 



43, 1881, p. 100; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 309, pi. 34, figs. 



