58 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



lateil. cluiml)ors six to nine in the last coil, high and narrow, generally 

 triangular in front view, sutures distinct, slightly sigmoid, wall of 

 fine sand grains with an excess of yellowish or reddish brown cement 

 smooth and glossy; aperture crcsccntiform, at the base of the aper- 

 tural face, between the base of the wall and the previous volution, in 

 adult specimens occasionally with a few circular perforations on the 

 a))ertural face of the last-formed chamber; color yellowish or reddish 

 brown. - ^ 



Diameter, 1-1.5 mm. 



Disirihi(fio)i.—As th's species is a segregation from Haplophrag- 

 moides trullissata it is impossible without an examination of speci- 

 mens to say which of the older records belong to this or the other 

 species. In the Pacific single specimens were found at two stations, 

 and in the Albatross Atlantic material single specimens were found at 

 three stations, one off the northeastern coast of the United States 

 and the other two in the Caribbean. Tliey are very typical, so the 

 species evidently has a wide distribution in cold waters and usually 

 at considerable depths. 



Cyclamrnina hradyi — muteriul examined. 



Genus LITUOTUBA Rhumbler, 1895. 



Trochamndna (part) H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879. p. 59; 



Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 342. — Ch.\pman, The Forami- 



nifera, 1902, p. 151. 

 Lituotuba Rhumbler, Nachr. Kongl. Ges. Wiss. Gottiugen, 1895, p. 83. — Cush- 



MAN, Bull. 71, U. S. Nat. Miis., pt. 1, 1910, p. 113. (Type, /.. Htni/onnis 



(H. B. 'BYiidy)=Trochammina litniformis H. B. Brady.) 



Description. — -Test of two distinct parts, an early (dose-coiled por- 

 tion and a long tubular uncoiled later ]iortion; wall arenaceous, with 

 an excess of cement, either indistinctly or irregularly divided. 



This genus seems related, on the one hand, to Ammodiscus through 

 such a form as TrocJiamminoides proteus (Karrer), but shows a definite 

 senescent character in its uncoiled form. Besides certain fossil species 

 this genus includes the following recent species: 



