RADIOLARIA 261 



Genus Staurocyclia (Fig. 105, c) 



Similar to the above, but flattened Family 4 Larcoidae 



Genus Cenolarus (Fig. 105, d) 



Colonial; individuals with anastomosing extracapsular cytoplasm, embedded 



in a jelly mass Legion 3 Polycyttaria 



Without latticed skeleton, but with silicious spicules arranged tangentially 

 to the central capsule Family 1 Sphaerozoidae 



Genus Sphaerozoum (Fig. 105, e) 



The central capsule of each individual enclosed in a latticed skeleton 



Family 2 Collosphaeridae 



Genus Collosphaera 



Suborder 3 Monopylea Hertwig 



Without any skeleton Legion 1 Nassoidea 



Family 1 Nassoidae 



Genus Cystidium (Fig. 106, a) 

 With skeleton 



Without a complete latticed skeleton Legion 2 Plectellaria 



Skeleton a basal tripod Family 1 Plectoidae 



Fig. 106 a. Cystidium prince ps. X120. 



b. Triplagia primordialis. X25. 



c. Lithocircus magnificus. XIOO. 



d. Dictyophimus hertwigi. X83 (All after Haeckel from Kiihn). 



Genus Triplagia (Fig. 106, h) 

 Skeleton a simple or multiple sagittal ring Family 2 Stephoidae 



Genus Lithocircus (Fig. 106, 6) 



With a complete latticed skeleton Legion 3 Cyrtellaria 



Lattice skeleton single, without constriction Family 1 Cyrtoidae 



Genus Dictyophimus (Fig. 106, d) 



Lattice skeleton is multiple Family 2 Botryoidae 



Genus Phormobothrys 



