222 NORMAN, ON RARE BRITISH POLYZOA. 



Hemeschara sanguinea, n. sp. PL VII, figs. 9 — II. 



Polyzoary spreading in a film-like, semi-attached state 

 over shells, and sometimes rising in frill-formed, free expan- 

 sions, consisting of a single series of cells ; colour deep red, 

 shining. Cells subquadrangular, distributed in nearly 

 straight subparallel lines, and quincuncially arranged, flat- 

 tened, perforated ; perforations large, circular ; mouth well 

 arched above, having a central sinus on the lower lip, on 

 each side of which is a little notch cut in sideways (see fig. 

 11) ; no oral avicularia. Ovicells semiglobose, tumid, perfo- 

 rated, surface between the perforations raised into nodulous 

 processes. 



H. sanguinea differs from the other species here included in 

 the genus in not having any oral avicularium. Several 

 specimens were dredged off Fermain Bay, Guernsey, based 

 on shells (Pecten maximus, Pectun cuius glycymeris, &c.), and 

 one on Eschara foliacea. 



I suspect that Busk^s figures, pi. Ixxviii, figs. 1 and 2, are 

 drawn from this species. They are called Lej^ralia pertusa ; 

 but in L. pertusa the cells are ovate and very tumid, the 

 mouth without any sinus on the loAver lip. That species is 

 well figured (Busk, pi. Ixxviii, fig. 3 ; and pi. Ixxix, figs. 

 1 and 2). 



Celleporella lepralioides, n. sp. PL, VII, figs. 4, 5. 



Polyzoary small, encrusting, in little lobed patches on 

 small stones. Cells irregularly disposed, cylindrical, elon- 

 gated, semi-erect, upper portion free (except in marginal 

 cells), surface rugose ; mouth nearly circular, apical, opening 

 vipwards ; peristome much raised, no avicularia. There are 

 large scattered punctures here and there upon the sides of 

 the cells, but they are not always very easily seen. 



Hab. Shetland, in 90 to 110 fathoms, living on small 

 pebbles. This is another addition to the large assemblage 

 of Polyzoa which live in the deep waters of the Shetland 

 seas, and have not been found elsewhere off" our coasts. 



