1895.] MICROSCOPICAL JOURNAL. 81 



Classification of the Radiolaria : Key to the Species of 

 Barbadoes. 



By rev. FRED'K B. CARTER, 



MONTCLAIR, N. J. 



Continued from jp^ 384, Vol. XV. 



34. SPONGOPRUNUM. 

 Meshes scarcely broader than the bars ; polar spines conical. ...amphilonche. 



35. SPONGODRUPPA. 



Cortical shell thorny, nearly 5 times as broad as medullary shell. ..pistachia. 



36. SPONGOTRACTUS. 



Cortical shell rough ; polar spines conical, sulcated pach^ stylus. 



37. SPONGOLIVA. 



Cortical shell smooth, 4 time.^ as broad as outer medullary shell cerasina. 



38. SPONGOXIPHUS. 

 Cortical shell thorny ; medullary shells spherical sphserococcus. 



39. ARTISCUS. 



Pores circular, 10-11 on half equator paniculus. 



40. CYPASSIS. 



Outer cortical shell thorny ; inner cortical shell with 10-11 pores on half 



equator of each chamber entomocora. 



41. C ANN ARTISCUS. 



Cortical shell rough ; pores 10-12 on half-equator of each chamber 



amphicylindrus. 



42. CANNARTIDIUM. 



Cortical shell without fenestrated protuberances ; pores 10-12 on half 



eqnator of each chamber amphicanna. 



43. PANARTUS. 



Cortical shell smooth ; pores 8-15 on half-equator of each chamber 



tetraphalangus. 



44. OMMATOCAMPE. 

 Cortical shell smooth; every chamber with 3 transverse rows of pores 



2-3 times as broad as the bars polyarthra. 



45. SETHODISCUS. 



Disk with thorny surface ; pores 11-12 on the radius echinatus. 



46. PHACODISCUS. 



Disk smooth; pores 12-13 on the radius lentiformis. 



