1892.] 



MICROSCOPICAL JOURNAL. 



257 



(//), 



Radiolaria : Their Life-History and Their Classification. 



By Rev. FRED'K B. CARTER, 



MONTCLAIK, N. J. 



\_Co7ititiued from fagc 2ig.'\ 

 It may be a help to the student to know that there is a great 

 difierence between the genera as regards the number of the 

 species in each. Furthermore, there is a diflerence in the num- 

 ber of species of any genus as regards the special locality in Bar- 

 badoes. This is very evident as one studies Ehrenberg's analysis 

 of this material. For the convenience of the student T give the 

 results in two columns, the lirst being the total number of species 

 of each genus found by Ehrenberg in the Barbadoes deposit ; the 

 second the number found at Springfield. 



Anthocyrtis, . 



Astrotmna^ 



Calocyclas^ 



Carpocaniuin^ . 



CenospAcera, 



Ceratospyris^ . 



C/adospyri's, 



Cofmi}e//a, 



Cryptoprora- Sethampora 



Cycladophora^ . 



Dictyocephalus^ 



Dictyophinius^ 



Dictyopodiuin^ 



Dictyospyris^ 



Eucyrtidium, 



Flustrella^ 



Halicalyptra^ 



Haliomtna^ 



Histiast7'u 7n , 



Hymeniastriini^ 



LitJiobotrys^ 



Lithocampe, 



Lithochytris^ 



Lithocorythium^ 



Lithocyclia, 



Lithomelissa^ 



Lithopera^ 



Lithorttithiiim^ 



LophophcFua^ 



Lychnocanium^ 



Per ichlamydium , 



Periph(^7ta^ 



Petalospyris^ 



Podocyrtis^ 



