1896.] MICROSCOPICAL JOUKjMAL. 19 



Classification of the Radiolaria: Key to the Species of 



Barbadoes. 



By REV. FEED'K B. CAETER. 

 MONTCLAIR, N. J. 



Continued from p. 213, July, 1895, and Concluded. 



154. SETHOCYRTIS. 



Shell bottle-shaped, smooth ; month nearly as broad as thorax cancrina 



Shell pear-shaped, thorny ; mouth i as broad as thorax diomedis 



Shell pear-shaped, spiny ; mouth I as broad as thorax menelai 



155. SETHOCORYS. 

 Shell slenderly ovate, smooth, cephalis ovate ; mouth J as broad as thorax 



armadillo 

 156. LOPHOPH^NA. 

 Horns not connected, bristle-shaped, about as long as radius of cephalis 



galea 

 Horns not connected, stout, conical ; about as long as diameter of cephalis 



radians 

 Horns connected, conical, about as long as diameter of cephalis.. .circumtexta 



157. DICTYOCEPHALUS. 



Length of the two joints 5-12, cephalis campannlate urceolus 



Length of the 2 joints 5-10, cephalis ovate-concical ..excellens 



Length of the 2 joints 4-6, cephalis ovate crassiceps 



158. SETHOCAPSA. 



Shell smooth ; cephalis with small conical horn of ^ the length lagena 



Shell smooth ; cephalis with large pyramidal horn of twice the length 



nidus 

 Shell smooth ; cephalis with internal septum of 2 crossed beams 



staurocephala 

 Shell spiny ; cephalis with conical horn of the same length bulla 



159. DICOLOCAPSA. 



Shell papillate, think walled ; cephalis flat, hemispherical platycephala 



160. PTEROCORYS. 



Cephalis with one horn twice the length ; thorax with angular wings of 



same length barbadeusis 



Cephalis with one horn three times the length ; thorax with conical 



wings twice the length.. ^ apis 



Cedhalis with one horn twice the length, thorax with conical wings \ 



the length of shell melitta 



Cephalis with one horn of same length, thorax with conical wings as 



long as the cephalis turgida 



Cephalis with several horns, thorax with short conical wings zittelii 



