516 VESICULARIID.E. 



those which have them spirally disposed (the latter ar- 

 rangement being a slight modification of the alternate) ; 

 and they again (as represented^ for instance, by A. senii- 

 convoluta, Lamk.) are but a step removed from the 

 species with a continuous spiral winding round the entire 

 stem. 



The known species are not numerous ; but the genus 

 is widely distributed, ranging from our own shores and 

 the Mediterranean to Japan, the American seas, and 

 Australia. 



Amathia LENDiGERA, Linuseus. 



Plate LXXIV. figs. 7-10. 



Nit Coralline, Ellis, Corall. 27, pi. xv. no. 24, fig. b, B. 



Sertulari.\ LENDIGERA, Livn. Syst. 1311: Pa^^. Elench. 124: Ellis ^ Sol. 



Zooph. 52 : Lister, Phil. Trans. 1834, 384. 

 La Sertolara lendincsa, Cavolini, Polip. Mar. 229, pi. ix. figs. 1, 2. 

 Amathia lendigera, Lamouroux, Bull. Soc. Philom. 1812 ; Pol. cor. flex. 



159; Expos. Meth. 10: Heller, Bryoz. Ad. Meer. 51. 

 Serialaria lendigera, Lamk. Ann. s. Vert. eel. 2, ii. 169: Fle-yn. B. A. 547: 



Blainv. Actinol. 476, pU xxxviii. fig. 2 : Couch, Corn. Faun. 



hi. 94, pi. xvi. fig. 4: Johnst. B. Z. ed. 2, 368, woodcut, 



fig. 68 : D' Orb. Pal. Fran^. terr. cret. : Landsb. Poji. 



Hist. 367, pi. xix. fig. 76: Alder, Northumb. Cat. 66 



(sep.) : &c. 

 Valkeria lendigera, BalycU, Rem. An. i. 249, jdI. lii. 



Zoariuin much branched, forming dense tangled masses ; 

 branches dichotomous, pellucid, obscurely jointed above 

 each division. Zooecia subcylindrical (ovate, compressed 

 laterally), disposed in distinct unilateral groups, placed 

 immediately below a fork, and containing usually from 

 4-8 cells in each row, which decrease in size towards 

 the upper extremity. 



Polypide with 8 tentacles. 



Habitat. On Fuci (especially Halidrys siliqtiosa) and 

 zoophytes, from low-water mark to deep water. 



