142 BULLETIN 104, UNITED STATES NATIONAL MUSEUM 



Genus EORUPERTIA Yabe and Hanzawa, 1927 



Eorupertia Yabe and Hanzawa, in Cushman, Contr. Cushman Lab. Foram. 



Res., vol. 3, 1927, p. 97.^ — Cushman, Special Publ. No. 1, Cushman Lab. 



Foram. Res., 1928, p. 331. 

 Uhligina Yabe and Hanzawa, Jap. Journ. Geol. Geogr., vol. 1, 1922, p. 71 



(genoliolotype, Uhligina boninensis Yabe and Hanzawa) (not Uhligina 



Schubert). 



Genoholotype. — Uhligina boninensis Yabe and Hanzawa. 



Test with the early stages coiled, later in a subcylindrical form, 

 the chambers in an elongate spiral about a hollow center; wall cal- 

 careous, coarsely perforate, developing canals and pillars; aperture 

 not well distinguished. 



This genus allied to the foregoing is known only as a fossil in the 

 Early Tertiary. 



Family 44. HOMOTREMIDAE 



Test in the early stages trochoid, attached by the dorsal surface, 

 later becoming irregular and growing upward from the area of attach- 

 ment into a more or less branched mass, all trace of the early arrange- 

 ment being lost; wall calcareous, coarsely perforate; apertures large, 

 open or covered by a perforated plate; a reddish or orange color 

 strongly developed. 



The forms belonging in this family have been excellently described 

 by Hickson — On Polytrema and Some Allied Genera. ^° There are 

 three genera as noted below. So far as recorded, Homotrema is the 

 only one of the three in the West Indian region where it is exceedingly 

 abundant. The others are known from the Indo-Pacific. All occur 

 in comparatively shallow, warm waters often in the case of Homo- 

 trema in the West Indies in pools left by the tide and which become 

 very hot in the sun. Little is definitely known of the family in the 

 fossil state, although specimens have been recorded as "Polytrema," 

 a name which before the appearance of Hickson's paper was usually 

 applied to all the members of the family. 



Genus HOMOTREMA Hickson, 1911 



Homotrema Hickson, Trans. Linn. Soc, London, ZooL, vol. 14, 1911, p. 

 445.— Cushman, Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 364; Smith- 

 sonian Misc. Coll., vol. 77, No. 4, 1925, p. 47; Special Publ. No. 1, 

 Cushman Lab. Foram. Res., 1928, p. 332. 



Millepora Lamarck, 1816 (not Linnaeus). 



Polytrema (part) of Authors (not Risso). 



Genoholotype. — Millepora rubra Lamarck. 



Test attached, the early stages coiled, later extending up in an 

 irregular mass with short stout projecting portions; wall calcareous, 



»« Trans. Linn. Soc. London, Zoology, vol. 14, No. 20, 1911. 



