34 MARINE POLYZOA. 



unfrequently reduced to five by the complete or partial abortion 

 of one of the cells, it does not appear improbable that in Emma 

 crystallina the apparent gemination of the cells is in fact due 

 to the abortion of a third alternate cell in all the internodes ex- 

 cept the one at which the bifurcation takes place. 



1. GEMELLARIA. 



Cells joined back to back ; all the pairs facing the same way. 

 Aperture oval, slightly oblique ; at a bifurcation each cell of the 

 primary pair giving off one of the secondary pair. 



Gemellaria, Savigny, 1805 ? ; Van Beneden ; Johnst. Brit. Zooph. 



293; Gray, List Brit. Rad. B. M. 133. 

 Gemicellaria, Blainv. 1830. 

 Loricaria, Lamx. Expos. 7 (1821), not Lacep. 

 Notamia, Flem. Brit. Anim. 1828. 

 Loricula, Cuvier, 1836. 

 Crisia, sp. Lamx. 1816 ; Lamk. 1816. 

 Scruparia ft Oken, Lehrb. Nat. 90, 1815. 



1. GEMELLARIA LORICATA. PL XLV. figs. 5, 6. 

 The only species. 



Muscus coralloides mollis elatior ramosissimus,, Doody, Raii Syn. 



i. 34. no. 6. 



Coat-of-mail Coralline, Ellis, Corall 40. no. 7. pi. 21. f. I, B. 

 Sertularia loricata, Linn. Syst. ed. 10. 815. 

 Cellularia loriculata, Pall. Elench. 64 ; Hogg's Stock. 35. 

 Sertularia loriculata, Linn. Syst. 1314; Turt. Gmel. iv. 684; 



Berk. Syn. 1. 219; Esper, Pflanz. Sert. t. 24. f. 1-3; Turt. 



Brit. Faun. 216; Jameson, Wern. Mem. i. 564; Stew. Elem. 



ii. 447. 

 Cellaria loriculata, Ellis and Soland. Zooph. 24 ; Bosc, Vers, 



iii. 133; Lamk. Anim. s. Vert. ii. 136, ed. 2. ii. 179; Johnst. 



Trans. Newc. Soc. ii. 262. 

 Scruparia loricata, Oken, Lehrb. Nat. 90. 

 Crisia loriculata, Lamx. Corall. Flex. 140. 

 Loricaria europsea, Lamx. Expos. Method. 7- 

 Notamia loriculata, Flem. Brit. Anim. 541 ; Farre, Phil. Trans. 



1837, 413. pi. 27. f. 6^9 ; Hassall, Ann. $ Mag. Nat. Hist. 



vi. 170; Couch, Zooph. Cornw. 42; Corn. Faun. iii. 101. 



pi. 18. f. 4. 

 Loricula loricata, Cuvier, Reg. Anim. ed. 2. iii. 303 ; Templeton, 



Mag. Nat. Hist. ix. 469. 

 Gemicellaria loriculata, Blainv. Diet. Sci. Nat. Ix. 425 ; Actinol. 



461.pl. 78. f. 4. 



