" We have .... reached the point long ago predicted by Lamarck in 

 promulgating the evolution theory, namely, that the lines drawn in the Linnean 

 system of nomenclature would be finally obliterated by discovery. In fact, we 

 are now beginning to retain the binomial system upon grounds of convenience 

 and of scientific courtesy, rather than upon lines of definition." OSBORN 



AND WORTMAN, 1895. 



PART III. 



DESCRIPTION OP SPECIES, 



CLASS ECTOPROCTA, Nitsche. 



SUBCLASS GYMNOL^EMATA, Allman. 



Order CYCLOSTOMATA, Busk. 

 Suborder TUBULATA, Gregory. 

 Diagnosis. See p. 39. 



Family TUBTJLIPORIDJ3. 



SYNONYMY : 

 Tubuliporidce, M. Edwards, pars ; Busk ; Smitt, pars ; MacGillivray, pars ; 



Hincks, pars ; Ulrich ; Johnston, pars ; Haime, pars ; Jullien, pm s. 

 Diastoporidce, pars ; Busk, pars ; Smitt ; Pergens and Meunier. 

 Diastoporidce, Marsson. 

 Stomaloporidce, Pergens and Meunier. 

 Sparsidce, D'Orbigny, pars. 



Diagnosis. Cyclostomata Tubulata in which the zocecia are 

 simple, open tubes, which either grow as linear series, or as 

 encrusting or erect sheets. The sheets may be coiled into hollow- 

 tubes, but only exceptionally form solid bundles. The zooecia 

 may be wholly immersed or partly free. 



