26 



PEOTOZOA— RHIZOPODA 



PHYLUM I 



joined end to end in nearly a straight line, curved but not coiled, wall 

 coarsely arenaceous, chambers undivided, aperture simple and terminal. 

 Carboniferous to Recent. 



Haplostiche Reuss (Fig. 9). Test similar to Beophax but the chaAibers 

 divided into labyrinthic cavities, aperture in adult made up of several pores 

 or dendritic. Jurassic to Recent. 



Subfamily C Trochamjiininae Brady. 



Test composed of several chamhers, either in a planospiral coil, trochoid or other- 

 wise arranged ; trail composed of sand grains of varying degrees of coarseness 

 cemented with a ccdcareons or ferruginous cement ; free or attached. 



Trochamminoidcs Cushm. (Trochammina Reuss, pars) (Fig. 10). Test free, 

 composed of several coils, each constricted into a number of chamber - like 

 portions with large openings between ; wall of fine sand and yellowish-brown 







A, SiMvainiiiiiin cmirri 

 Brady. Carboniferous Lime- 

 stone ; Elfhills, Northum- 

 berlaiul. i/j. B, Fractured 



Fig. 9. 



Hdjihisliclie 



/((I/ /((itt Schwa- 



g e V. U p p e r 



Jurassic (Im- 



iressa clay) ; 



Fi(i. 10. 



Fig. 11. 

 Lititohi (Ihijilo- 



FlG. M 



jilimuinium) i rreiju- 



Placop.Hlliin 

 /■(istnitu Quenst. 

 sp. Upper ,) ur- 

 assic (luipressa 



Triichuiiiininn pro- 



ti'u.i Karrer. Vienna 



sandstone(Senouian); laris Roeiuer. Sea- clay) ; Reiehen- 

 test, filled with interior cal- Gruibingen, Hiittel dorf, near phiten - Pliiner ; bach, Wurtteni- 

 cite. "Vj (after Brady). Wiirtteinbers. Vienna. Knindorf, Bohemia. berg. 



cement, aperture simple at the end of the last-formed chamber. Lias to 

 Recent. 



Ammohaculites Cushm. {Haplophragmium Reuss, pars) (Fig. 11). Test free, 

 chambered, early portion close-coiled in one plane, later portion uncoiled and 

 made up of a more or less linear series of chambers ; wall coarsely arenaceous, 

 fairly thick ; aperture single, at the centre of the terminal face of the uncoiled 

 portion, but in the coiled portion at the base of the apertural face. Carboni- 

 ferous to Recent, particularly abundant in the Jurassic and Cretaceous. 



Flacopsilina d'Orb. (Fig. 12). Test rugose, arenaceous, attached, and 

 divided into pyriform or spherical chambers, Avhich are joined in chains or are 

 irregularly united. Lias to Recent. 



Sublainily D. Neusininae Cusluu; 



111. 



Test arenaceous with some chitin, broad and fiaftened, of many rliamhers, early 

 portion coiled, later chambers broad and spreading ; sides with elongated chitinous 

 filaments. 



Here is placed the single recent genus Neusina Goes. 



