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ZOOPHYTOLOGY. 



Class. POLYZOA. 



Order I. P. infundibulata. 



Sub-order 1. Cheilostomata. 



§ 1. Articulata. 



§§ 2. Bi-multiserialaria. 



Fam. Salicornariad^, Busk. 



Gen. Onchopora, n. sp., Busk ("OyKos). 

 Cells ventricose, coalescent ; not bordered by a raised margin. Ovicells 

 inconspicuous. 



1. 0. hirsuta, n. sp. ? Busk. PI. III. 



A long jointed corneous tube arising on each side on the front and upper 

 part of the cell ; a raised median jjore, below the mouth, which is produced 

 and subtubular. 



? Cellaria hirsuta, Lamx. Hist, des Polyp, cor., p. 126. PI. II., 



fig. 4, a, B. 



Hab. New Zealand. Dr. Lyall. 



The outward aspect of this species so closely resembles that of C. hir- 

 suta, Lamx., that, notwithstanding the apparent differences in the minuter 

 details, so far as they can be ascertained from the imperfect figure above 

 cited, I am strongly inclined to regard them as most probably identical. 

 The polyzoary forms small tufts, constituted of short truncated internodes, 

 united by a single large corneous tube, and having a hairy aspect from 

 the curious, jointed corneous tubes springing from each side of the cell. 

 The little median pore sometimes appears like a very minute avicularium, 

 but it is by no means clear that it is an organ of that kind. The corneous 

 tubes are clearly not vibracula ; and as the perfect ones are closed at the 

 end, and free, they do not seem to be of the nature of radical tubes, such 

 as exist, for instance, in Cauda arachnoidea. 



2. 0. tuhulosa, n. s., Busk. PI. IV., fig. 1. 



Mouth of cell — very much produced, tubular ; a median pore in front 

 of the cell. 



Hab. ^gean Sea. E. Forbes. 



The much-produced tubular prolongation of the mouth in this species, 

 at the end of which there is no indication of a moveable lip, might at first 

 sight lead to the supposition that this form belongs to the second sub- 

 order of the Polyzoa ; but further examination, and especially where the 

 tubular portion may be partially broken off, will detect the lip, at the 

 bottom of the tube, in the usual situation. The absence of the corneous 

 tubes at once suffices to distinguish this from the preceding species, from 

 which it also diflers very widely in external aspect. The polyzoary is not 

 constituted, as in that case, of short internodes, arising from each other in 

 a dichotonions arrangement, but is formed of cylindrical branches some- 

 times an inch or more in length, from which others arise at irregular 

 distances, and nearly at right angles, to that from which they spring, and 

 to which they are articulated, not by a single, wide corneous tube, but by 

 a bundle of smaller tubes, in number corresponding to the initial cells of 

 the new branch. It may be supposed to bear some resemblance to the 

 Cellaria cercoides of Ellis and Solander (PI. V., fig. b, A, B, C, D, E) ; 



