MARINE POLYZOA. 21 



In the aberrant species above referred to the cells are numerous 

 in each internode, usually tri- or multiserial. The genus appears 

 to enjoy a wide geographical range, occurring from the arctic 

 circle in a species not here described, to the southern points of 

 South America and of Africa. 



a. Operculatse. Cells with a pedunculate operculum protecting the 

 aperture. Tricellaria. 



1. MENIPEA FUEGENSIS. PI. XIX. 



Cells elongated, three in each internode. Operculum simple, 

 acicular, curved; three to four spines on the upper border. 

 Anterior avicularium single. 



Hob. Tierra del Fuego, low water, Darwin-, Falkland Islands, 

 Hooker. 



2. MENIPEA TERNATA. PL XX. figs. 3, 4, 5. 



Cells elongated, much attenuated downwards, three in each 

 internode. Operculum expanded, entire; two spines on the 

 upper margin. Anterior avicularium single. 



Cellaria ternata, Ellis and Soland. Zooph. 30. 



Sertularia ternata, Turt. Gmel. iv. 687. 



Crisia ternata, Lamx. Corall. Flex. 61. 



Tricellaria ternata, Flem. Brit. Anim. 540; Blainv. Act. 458; 



Gray, Brit. Had. 113. 



Cellularia ternata, Johnst. Hist. Brit. Zooph. ed. 2. p. 335. t. 59. 

 Hab. Britain. 



/3. Inoperculatae. Without a pedunculate operculum. Menipea. 



3. MENIPEA CIRRATA. PL XX. figs. 1, 2. 



Cells pyriform, constricted below, six in each internode, one 

 of the lower usually more or less aborted; usually one large 

 lateral avicularium to each internode ; three marginal spines very 

 long and strong ; anterior avicularium single, its upper border 

 toothed. 



Cellaria cirrata, Ellis and Soland. Zooph. 29. t. 4. fig. d, D. 



Cellaria crispa, Pall. Elench, Zooph. 71. 



Sertularia crispa, Gmel. Syst. Nat. ed. 13. 3860, and 



Sertularia cirrata, ib. 3862. 



Tubularia cirrata, Esper, Pf. T. t. /. fig. 1-3 ; Seba, Thesaut . iij . 



t. 101. no. 8. 

 Menipea cirrata, Lamx. Exposit. p. 7. pL 4. fig. D, D 1 ; Krauss, 



Cor. und Zooph. d. Suds. p. 32. 

 Hab. South Africa. 



