22 SMITHSONIAN MISCELLANEOUS COLLECTIONS \0L. 'J'] 



Genus THOLOSINA Rhumbler, 1895 



Plate 2, fig. 3 



Test attached, hemispherical, flattened on the side by which it is 

 attached, chamber single, undivided ; with pseudopodial extensions 

 of the test along the surface of the attached surface or with the sides 

 clear cut ; wall of fine sand grains with a large proportion of calcareous 

 cement ; pseudopodial openings at base along attachment or at the end 

 of irregular tubes running out from the base along the surface of 

 attachment. 



Genus AMMOSPHAEROIDES Cushman, 1910 



Test irregularly subglobular, composed of an elongate or sub- 

 spherical chamber with double apertures typically ; wall finely arenace- 

 ous with a large proportion of reddish-brown cement; apertures at 

 the end of short tubular portions of the test. 



Genus VERRUCINA Goes, 1896 



Test adherent, irregular-ovoid in shape ; interior divided into 

 irregular chamberlets ; wall composed of sand grains, rough exter- 

 nally ; aperture usually double, situated in the depressed area at the 

 center of the dorsal side. 



Genus CRITHIONINA Goes, 1894 



Test spherical, lenticular or variously shaped, interior either 

 labyrinthic or with a single chamber ; apertures small and scattered 

 or iufhstinct; wall thick, composed of sponge spicules or very fine 

 sand, often chalky in appearance. 



Genus THURAMMINA H. B. Brady, 1879 

 Plate 2, fig. 4 



Test typically free, usually nearly spherical, but in some species 

 compressed ; chamber single and undivided in typical species ; wall 

 thin, composed of fine sand with more or less chitin ; apertures several 

 to many at the end of nipple-like protuberances of the surface, occa- 

 sionally wanting. 



Subfamily 3. Hyperammininae 



Test consisting of a globular proloculum and a more or less 

 elongated, sometimes branching portion, but not divided into cham- 

 bers ; free or attached ; wall of various agglutinated materials. 



