92 MARINE POLYZOA. 



11. ESCHARA CERVICORNIS. PL CIX. fig. 7. PI. CXIX. fig. 1. 



Polyzoary much branched, compressed. Cells at the growing 

 extremities ovate, elongated ; mouth orbicular, lower margin 

 sinuated and projecting, with a semicircular avicularium within 

 the sinus. In the older parts of the polyzoary the cells are 

 deeply immersed, the mouth often subtubular and projecting, or 

 immersed and sinuated below with the avicularium as above. 



?Poro cervino, Imperato, Hist. Nat. p. 630 (1572); ? Bonanni, 



Museum Kirch, p. 286. fig. 13 (1709). 

 ? Porus cervinus minor, Marsiali, Hist, physique de la Mer, 



(1525) p. 63. pi. 32. fig. 152. 

 Millepora cervicornis, Ellis fy Solander, (1786) p. 134; Pallas, 



Elenchus Zoophyt. ; Stewart's El. ii. p. 427 ; Turton, Brit. 



Fauna, 204. 

 Millepora compressa, Sow. Brit. Miscell. 83. pi. 41 ; Jameson, 



in Wern. Mem. i. 560; OJcen, Lehrb. 86? 

 Eschara cervicornis, Lam. Hist. Nat. des An. s. V. ed. 2. ii. 267 ; 



Lamouroux, Encycl. p. 374 ; Blainville, Diet. d. Sc. Nat. xv. 



297, & Man. d' ' Actinologie, p. 428 ; M.-Edwards, Sur les 



Eschares, p. 15. pi. 1, & pi. 2. fig. 1. 

 Cellepora cervicornis, Couch, Zooph. Cornw. 49 ; Cornish Fauna, 



pt. 3. p. 111. pi. 20. fig. 1. 



Porus cervinus, Borlase, Cornw. 240. t. 24. fig. 7 (not Marsiali). 

 Millepora alcicornis, Esp. Millep. t. 5, 6, 7. 

 Hab. Start Point? from J. S. Bowerbank. 



From the figures of Cellepora cervicornis given (Brit. Zooph. 

 pi. 53), that species would appear to differ from the present, not 

 only in habit, but more particularly and importantly in the shape 

 of the oral apertures in the older or immersed portions of the 

 polyzoary. In the specimen from which the figures in this 

 Catalogue were taken, and the present description drawn up, the 

 characters so exactly accord with those assigned to it and figured 

 by M. Milne-Edwards, that I cannot entertain a doubt upon 

 the identity of the form 1 have had before me and the one he 

 has in view. The exact habitat of my specimen is unfortunately 

 not quite certain : I have it marked Britain, but am not sure 

 whether Mr. Bowerbank procured it, or had it from the coast of 

 Devon, or from the Orkneys or Shetland ; in any case, however, 

 it is a British species, and until further evidence is offered of 

 another much-resembling form, I must entertain grave doubts 

 as to the existence of a distinct one so nearly allied as that 

 figured in Hist, of Brit. Zoophytes ; and this notwithstanding 

 the opinion of M. Milne-Edwards to the contrary (/. c. p. 16). 



It is to be remarked, that in the older parts of the polyzoary 

 of my specimen, the surface presents numerous protuberant 



