133 



CHAPTEE X 



THE FAMILY LITUOLID.E 



The L1TUOLID.E are sepanitecl from the foregoing 

 family of arenaceous rhizopods chiefly on account of 

 their possessing truly septate tests, and their more 

 regular form. 



The septa are not always perfectly developed, and 

 the interior of the test is frequently occupied by 

 meandering or labyrinthic chambers. 



In this family arenaceous isomorphs of nearly all 

 the simpler porcellanous and hyaline types may be 

 found : as, for example, in AmmodiscuSj which 

 resembles Cormispira and Spirillinci; the monotha- 

 lamous form of Beojjhax, resembling Lagena ; the 

 uniserial BeojjJiax and Horvwsina, resembling Nodo- 

 saria; the complanate forms of Hajjlojjhragmiiuu, 

 resembling Marginulina^ and CristeUarkc; the 

 Haplopliragmia with inflated chambers, resembling 

 Glohigerina, Botalia, and Nonionina ; the attached 

 form Wehhina, resembling Vitriivehbina ; and Troch- 

 ammina^ resembling Anomalina and Botalia. 



As in the AsTROEmziD.E the tests of the Lituolids 

 may be variously constructed of coarse or fine sand- 

 grains held together with chitinous or ferruginous 

 cement, as in Beophax and Hormosina ; of calcareous 



