54 



Introduction to Animal Morphology. 



5th. Peneroplidae, shells striated, brown, sometimes perforate, 

 with single, lobulate, or branched openings ; shells helicoid, 

 ear-shaped, or discoidal, ex. Dendritina. 



Order 2nd. Perforata or Foraminifcra proper (D'Orli^nv], 

 shells vitreous, perforated, includes the following families : 

 i st. Lagenidse monothalamous ; mouth circular ; shell hard, 

 finely perforated, ex. Lagena. 2nd. Orbulinidae monothala- 

 mous, with globose test. 3rd. Orthocerinidae chambers 

 successive, in a straight (Nodosaria) or bent line (Dentalina), 

 openings circular in the centre of the septum. 4th. Poly- 

 morphinidae cells alternating ; sides unsymmetrical, some- 

 times with a bifurcating axis, t-x. Bulimina.* 5th. Cristel- 

 laridae nautiloid, finely perforate ; chambers encircling each 

 other, with an opening at the upper angle, ex. Cristellaria. 

 6th. Nonioninidce vitreous, often siliceous ; intercameral 

 opening at the lower angle, ex. Fozoon, Siderolithes, 

 Nonionina. ;th. Uvellinidaj chambers uniserial, spiral, 

 turbinati 1 , coarsely perforate, ex. Globigerina, spinose when 

 recent, Uvellina. 8th. Ro- 



Fit? 2 



talinidae helicoid or tur- 

 binated, with embracing 

 chambers, ex. Rosalina, 

 Rotalia. 9th. Borelidx 

 shell coiled on an elongated 

 axis, divided by incomplete 

 septa, ex. Borelis. loth. 

 Soritidoe discoidal, with 

 cycloidal whorls of cham- 

 bers, ex. Cyclolina. nth- ^j~z 

 Conulinidce axis straight, 

 mouth of many pores, ex. 

 Conulina. i2th. Textu- 

 laridce axis elongated, 

 chambers symmetrical, al- 

 ternate, double rowed, Ololigcrina bulloidcs. 

 (Frondicularia, Textularia). ijth. Cassidulinidce resem- 

 bling the last, but with the axis once curved perpendicular to 





Made the type of a family Buliminidoe. 



