DESCRIPTION OF GENERA AND SPECIES. 



Sub-Order II. CYCLOSTOMATA, Busk. 



Cyclostomata, Bk., Smitt, Hincks, Auctt. 

 Tubuliporina, M. -Edwards, Jolinst., &c. 

 Auloporina and Myrioporina (pars), Ehrenberg. 

 Cerioporina (pars), Bronn. 

 Centrifuginea (pars), d'Orbigny. 

 Millepores d cellules (pars), Blainville. 



Character.— Zocecia. tubular, calcareous, partially free or wholly connate or 

 immersed ; aperture terminal, inoperculate. 



Division L— ARTICULATA seu RADICATA. 



Radicellata, d'Orbigny, Hincks, Smitt, &c. 

 Articulate s. Radicatse, Bk., Crag Polyz. 



CAamc^er. —Zoarium branched, divided into distinct internodes by flexible chitinoua 

 jomts ; aflised by chitinous, or calcareous jointed stoloniform radical tubes. Zocecia 

 disposed in single or double longitudinal series, all facing in one direction. 



Family I. Crisiad.^. 



Les Crii-ies, M.-Edwarda 

 Crisiadse, Johnst., Busk, &c. 

 Crisiidoe, Busk, Hincks, &c. 

 Crisiex, Smitt. 

 Crisidea, Reuss. 

 Crisids, d'Orbigny. 



Character. — The only family. 



(ZOOL. CHALL. EXP. — PABT L, — 188C.) j)^^ j 



