1893.] MICROSCOPICAL JOURNAL. 305 



Radiolaria Classification Continued. 



By RI:v. TRED'K B. CARTER, 

 MONTCLAIR, N. J. 

 (Continued from page 230.) 

 Having finislied the genera of the legion SPUMELLARIA, or 

 I'EIvIPYLEA, we take up now the genera of the legion NAS- 

 SKLLARIA, or MONOPYLEA, in which the fundamental form 

 of the central capsule is egg-sha])ed instead of spherical, and 

 the pores instead of being distributed all over it are confined to 

 one area, and the skeleton has the shape of an egg, cone, or bee 

 hive, with one large mouth or opening. This legion is repre- 

 sented by a far larger number of genera in Barl)adoes than the 

 former, 120 as against 71. They are capable of being divided 

 and sub-divided, however, in such a way as to render it easier 

 for the student to master them than he v/ould imagine. 

 Thus, there are two main divisions: 

 A. — Without complete lattice shell. 

 B. — With complete lattice shell. 



A.— WITHOUT COMPLETE LATTICE SHELL. 

 IV. Stephoidea. — A ring or rings. 

 17.— Family : STEPHANIDA. One ring. 

 Branched spines. Dendrocircus. . 



No branched spines. Zygocircus. 



18.— Family : SEMANTIDA. Two crossed rings, vertical and 

 horizontal. 



A. — BASAL RING AVITHOUT FEET. 



Two basal pores. Semantis. 



Four basal pores. Semantntm. 



Six basal pores. Semantidium. 



B. — BASAL RING AVITII FEET. 



Three basal feet. Cortiniscus. 



19. — Family: CORONIDA. Two crossed vertical meridional 

 rings and commonly a horizontal basal ring. 

 Six large gates. Basal ring with feet. Podocoronis. 



Eight large gates. Tristephanium. 



20.— Family : TYMPANIDA. Two parallel horizontal rings 

 connected by vertical sagittal ring (and often by vertical frontal 

 ring.) 



