BY DR. E. VON LENDENFELD. 225 



8. SUB-FAMILY. GLADIOGRAPTI^E. 

 GLADIOGRAPTID^E. Lapworth. 

 Both axes separate. Perfect exoskeleton of chitinous fibres. 

 Clathrograptus. Lapworth. 

 Trigonograptus. Nicholson. 

 Retiolithes. Barrande. 

 7. FAMILY PLUMULARID^E. Hincks, 1868. 

 Forming a colony. Alimentary and Generative Zooids, and 

 Machopolyps. Alimentary Zooids with one verticil of filiform 

 Tentacles. 



Ovum 



Blastostyl Polyp Machopholyp 



Hydroriza. 



I 

 First Polyp 



I 

 Ovum. 



Ophiodes. Hincks. 

 Plumularia. McCrady. 

 Antennularia. Lamarck. 

 Aglaophemia. McCrady. 

 Halicornaria. Busk. 

 Halicornopsis. Bale. 

 Sciarella. Allman. 

 Acanthella. Allman. 

 Schizatricha. Allman. 

 Polyplumaria. Sars. 

 Heteroplana. Allman. 

 Acanthochladium. Allman. 

 Lithocarpus. Kirchenpauer. 

 Kirchenpaueria. JickelL 

 Streptocaulus. Allman. 

 Diplochilus. Allman. 

 Cladocarpus. Allman. 

 Azigo plana. Allman. 

 Etc. 



