26 



PROTOZOA— EHIZOPODA 



PHYLUM I 



joined end to end in iiearly 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 Chambers 

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

 or dendritic. Jurassic to Recent. 



Subfamily C. Trochammininae Brady. 



Test composed of several Chambers, either in a planospiral coli, trochoid or other- 

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

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



Trochamminoides 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, Saccammina carteri 

 Brady. Carboniferous Lime- 

 stone ; Elf hüls, Northum- 

 berlaiid. 1/2. B, Fractured 

 test, filled with interior cal- 

 cite. 10/j (after Brady). 



Haplostiche 

 horrida Schwa- 

 ger. Upper 

 Jurassic (Im- 

 pressa clay) ; 

 Gruibingen, 

 Württemberg. 



Fig. 10. 



Trochammina pro- 

 tcws Karrer. Vienna 

 sandston e (Senonian) ; 

 Hütteldorf, near 

 Vienna. 



Fig. ]]. 



Lituola (Haplo- 

 phragmium) irregu- 

 laris Roemer. Sca- 

 phiten - Pläner ; 

 Kröndorf, Boheniia. 



Fig. 12. 



Placopsiliria 

 r od rata Quenst. 

 sp. Upper Jur- 

 assic (Inipressa 

 clay) ; Reichen- 

 bach, Württem- 

 berg. 



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

 Recent. 



Ammobaculites 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. 



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

 divided into pyriform or spherical Chambers, which are joined in chains or are 

 irregularly united. Lias to Recent. 



Subfamily D. Neüsininae Cuslimaii. 



Test arenaceous with som,e chitin, broad and flattened, of many Chambers, early 

 portion coiled, later Chambers broad and spreading ; sides with elbngated chitinous 

 ßaments. 



Here is placed the single recent genus Neusina Goes. 



