213 



ZOOPHYTOLOGY. 



Shetland Polyzoa. Collected by Mr. Barlee. 

 (Continued and concluded.) 



Fam. Bicellariida, Bk. 

 Gen. 1. Bicellaria, Blainv. 

 1. B. Alderi, n. sp. PI. XXVIII, figs. 1, 2, 3. 

 B. cellulis tnrbinatis, in/erne valde attenuatis ; apertnrd ovali, spind 

 unicd ciPffulo externo positd instructd. 



Cells turbinate, much attenuated downwards ; aperture oval, a single 

 marginal spine at the outer angle. 

 Hab. Shetland, Barlee. 



B. Alderi, Bk. Rept. British Association, 1859. Trans, of Sect. p. 145. 

 Gen. Onchopora, Bk. 

 1. Onchopora borealis, n. sp. PI. XXVIII, figs. 6, 7. 

 0. cellulis immersis, circa marginem perforatis ; poro centrali elevato tig- 

 natis ; superficie subsulcato. 



Cells immersed, punctured at the sides ; a central raised pore on the 

 front of the cell ; surface faintly and irregularly sulcate. 



Hab. Shetland, Barlee. 



As only a very minute fragment of this species occurs in 

 Mr. Barlee's collection, its fuller description must be re- 

 served to a future occasion, and for more perfect specimens. 

 6. Lepralia monodon, n. sp. PI. XXIX, figs. 3, 4. 



L. cellulis, subpyriformibus, ovatis, seu ventricosis, superne libera, suberecta ; 

 superficie punctata seu scrobiculata ; orificio rotundo, peristomate incrassato, 

 seepius superne dentato. 



Cells pear-shaped, ovate or subventricose below, free upwards, and raised ; 

 surface knitted; orifice round, peristome entire, thickened, often raised 

 into a central blunt tooth at the summit. 



Hab. Shetland, Barlee; on shell. 



On further inspection of some of Mr. Barlee's specimens, 

 I have met with the above form of Lepralia, which I am 

 unable to reconcile with any hitherto described. From the 

 single specimen in my possession, the nature of the tooth - 

 like projection on the upper border of the mouth is not very 



