288 MYRIOZOID^E. 



place and name. I have therefore decided, with the 

 greatest respect for Profesor Smitt's opinion, to retain the 

 genus Hippothoa, which has not only a strongly marked 

 facies but also an ancient pedigree. In the Cretaceous beds 

 it is well represented by characteristic species ; and it is 

 widely distributed in the waters of our own epoch. 



HIPPOTHOA DIVARICATA, Lamouroux. 



Plate XLIV. figs. 1-4 ; and Plate I. fig. 2. 



HIPPOTHOA DIVARICATA, Lamx. Expos. Meth. 82, pi. bun. figs. 15, 16: 



Johnst. B. Z. ed. 2, 291, pi. li. figs. 3, 4: Busk, B.M. Cat. 



i. 30, pi. xTiii. figs. 3,4*. 

 CATENICELLA DIVARICATA, Blainv. Actinol. 4.62. 

 ? HIPPOTHOA LANCEOLATA, Gray, Zool. Misc. 35: Hassall, Ann. N. H. vii. 



366, pi. viii. figs. 5, 6 : Couch, Corn. Faun. iii. 102, pi. xyiii. 



fig. 6. 

 HIPPOTHOA PATAGONICA, Busk, B.M. Oat. pt. i. 30, pi. xvii. fig. 1 ; id. Crag. 



Pol. 24, pi. i. fig. 5. 

 MOLLIA HYALINA, forma DIVARICATA, Smitt, QEfv. K. Vetensk.-Akad. For- 



handl. 1867, Bihang, 17 and 112, pi. xxv. figs. 86, 87. 

 HIPPOTHOA LONGICAUDA, Fischer (=H. Patagonica, Busk, Crag Pol.), 



Bryozoaires d. cotes du sud-ouest de la France, Actes Soc. 



Linn. d. Bordeaux, xxvii. 1870 (p. 21, Sep.). 



Zooecia more or less remote, ovate or pyriform, smooth 

 or finely striated transversely, glossy, of a pearly white- 

 ness, carinated in front; orifice arched above, with a 

 notch in the lower margin. Ocecia small, globose, with 

 a boss in front, borne on cells which are somewhat 

 inferior in size to the ordinary zooecia. 



Var. a (confertd). Zooecia crowded, ovate or pyriform, 

 rather short, strongly striated transversely, the connect- 

 ing fibre rudimentary ; orifice arched above, with a 

 notch on the lower margin ; a prominent umbo imme- 

 diately below it. Ocecia rather large, rounded, broader 



* I do not include Audouin's H. divaricata amongst the synonyms, as it 

 possesses a yery differently shaped mouth from that of the present specie*. 

 It i the H. Saingnyana of D'Orbigny. 



