22 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



REOPHAX MONILIFORME Siddall. 



Reophax (?) sp. Balkwill and Wright, Trans. Roy. Irish Acad., vol. 28, (Sci.), 

 1885, p. 328, pi. 13, figs. 9, 22-24.— Halkyard, Trans! Ann. Rep. Manchester 

 Micr. Soc, 1889, p. 66, pi. 1, figs. 8-9. 



Reophax monilifonne Siddall, Proc. Lit. Philos. Soc. Liverpool, No. 40, 1886, 

 appendix, ]>. 54, pi. 1, fig. 2. — ^Heron-Allen and Earland, Journ. Roy. 

 Micr. Soc, 1909, p. 322; Proc. Roy. Irish Acad., vol. 31, pt. 64. 1913, p. 43, 

 pi. 2, fig. 12; Trans. Linn. Soc. London, vol. 11, ])t. 13. 1916, p. 223. 



Descri'ption. — Test elongate, subcylindrical, slightl}^ tapering, 

 initial end of the test largest, thence gradually decreasing in diameter 

 to the apertural end or keeping the same diameter throughout after 

 the early portion, in some cases the proloculam large and inflated; 

 wall of fine sand and cement or largely of sponge spicules laid length- 

 wise of the test; color ferruginous. 



Distribution. — This species is only known from the region of the 

 British Isles. It is found especially at several stations in the Clare 

 Island region, western Ireland, and off western Scotland (Heron- 

 Allen and Earland). 



One of the peculiar characters of the species is the tendency to 

 break, leaving the apertural end and a few adjacent chambers only. 

 Heron-Allen and Earland, however, have found complete specimens 

 in the Clare Island region. It has not been found on the western 

 side of the Atlantic, 



REOPHAX FINDENS (Parker). 



Lituola findens Parker, in Dawson, Canad. Nat., vol. 5, 1870, pp. 177, 180, fig. 1. — ■ 

 Siddall, Proc. Chester Soc. Nat. Sci., pt. 2, 1878, p. 47. 



Reophax findens Siddall, Catal. British Rec. Foram., 1879, p. 4. — H. B. Brady, 

 Rep. Voy. Challenger, Zoology, toI. 9, 1884, p. 299, pi. 32, figs. 10-11.— 

 Egger, Abh. Bay. Akad. Wiss. Munchen, vol. 18, 1893, p. 257, pi. 4, 

 figs. 28-30. — ^Heron-Allen and Earland, Proc. Roy. Irish Acad., vol. 31, 

 pt. 64, 1913, p. 44, pi. 2, fig. 13.— Rhumbler, Foram. Plankton Exped., teil 2, 

 1913, p. 466, fig. 175. 



Description.— Test elongate, one end bifurcate, the other single, 

 chambers of nearly uniform size, aperture at the single end, rounded 

 or elliptical; wall arenaceous, somewhat rough; reddish brown in 

 color. 



Length about 1 mm. 



Distribution. — The type locality for this species is Gaspe Bay, 

 Gulf of St. Lawrence, in 15-20 fathoms (27-37 meters). The other 

 records are from about the British Isles, the estuary of the Dee 

 (Siddall), and six stations in the Clare Island region on the west 

 coast of Ireland (Heron- Allen and Earland). 



This species has been confused with R. 7iioniliform,e, which, according 

 to Heron-Allen and Earland differs in being smoother than R. findens 

 and in using sponge spicules which R. fi-ndens does not use. The 

 shape when complete is, of course, distinctive. 



I have entirely failed to find this species in the Atlantic material 

 which I have examined. 



