EEPOET OX THE FOEAMINIFEEA. 
65 
Test subcylindrieal, growing attached at one end (?) ; 
the other end rounded, and formed of loose sand- 
grains with interstitial openings. Interior filled 
with irregular septa, formed of coarse sand-grains 
slightly cemented together, . . . Botellina , Carpenter. 
Test columnar, growing attached by an expanded convex 
pseudo-polythalamous base ; column straight or 
crooked ; either simple and gradually increasing in 
size towards the apex, or dividing into a number of 
branches. Test generally beset with sponge-spicules ; 
aperture terminal, ..... Haliphy sema, Bowerbank. 
Family IY. LITUOLIDJE. 
Test arenaceous, usually regular in contour ; septation of the polythalamous forms 
often imperfect, chambers frequently labyrinthic. Comprises sandy isomorphs of the simple 
porcellanous and hyaline types ( Cornuspira , Miliolina, Peneroplis , Lagena, Nodosaria , 
Cristellaria, Globigerina, Rotalia, Nonioninct, &c.), together with some adherent species. 
Sub-family 1. Lituolinse, — test composed of coarse sand-grains, rough 
externally ; often labyrinthic. 
A. Non-labyrinthic 
Test free ; composed either of a single flask-shaped 
chamber, or of several, united in a straight, curved, 
or irregular line ; never spiral, 
Test free ; partially or entirely spiral ; nautiloid or crosier- 
shapecl ; chambers numerous, 
General characters those of Phaplophragmium, but the 
later chambers widening rapidly, 
Chambers piano convex, adherent, 
B. Chambers labyrinthic. 
Test free, uniserial, straight, or arcuate : never spiral, 
Test free ; partially or entirely spiral ; nautiloid or 
crosier- shaped, ..... 
Test adherent ; chambers linear, vermiform, approxi- 
mated, intercommunicating by a row of pores on each 
septal face, ...... 
Reophax, Montfort. 
Haplophragmium, Beuss. 
Coskinolina, Stache. 
Placopsilina, d’Orbigny. 
Haplosticlie, Reuss. 
Lituola, Lamarck. 
Bdelloidina, Carter. 
