British Hydrozoa, Actinozoa, and Polyzoa. 85 



the simple peristome. Ovicell in the form of a helmet, punc- 

 tured in the same manner as the cells, and surmounted by a 

 small avicularium. 



Dredged on shell off Guernsey, in about 10 fathoms (1859). 



This well-marked form is not likely to be confounded with 

 any previously described Lepralia that we are acquainted with. 



Lepralia complanata, n. sp. PI. X. fig. 4. 



X. cellulis rhomboideis, planis, immersis, perforatis, lineis elevatis 

 inter se separatis ; orificio semicirculari) margine inferiore recto 

 evexo, superiore convexo inermi ; ovicellula minima, depressa, 

 lunata, Isevi. 



Cells lozenge-shaped, much flattened, having their surface 

 punctured and separated from each other by elevated lines. 

 Mouth semicircular, with the upper lip well arched and not 

 furnished with any spines, and the lower lip nearly straight, but 

 pouting. Ovicells depressed, in the form of a quarter-moon, 

 and having their surface smooth. 



This species was found among the valuable collection of 

 British Zoophytes accumulated by my late friend Mr. Barlee, 

 and bequeathed to me by him. It is lodged in the little hollows 

 of a rounded and much water-worn piece of coarse-grained 

 granite. This fact may probably hereafter lead to the identifi- 

 cation of the exact locality of the specimen, which (there being 

 unfortunately no label attached) is at present unknown to me. 

 In company with it on the stone were Memhranipora spinifera, 

 Lepralia spinifera (true), and Lepralia punctata. 



Lepralia laqueata, n. sp. PI. X. fig. 5. 



X. cellulis rhomboideis, latis, subimmersis, granulosis, puncturis 

 margiualibus magnis lineisque elevatis sejunctis ; orificio semicir- 

 culari, margine superiore dentibus tribus (?) plerumque evane- 

 scentibus armato, inferiore recto evexo denticulum penitus coUo- 

 catum desuper spectato ostendente ; ovicellula rotundata, convex- 

 iuscula, subimmersa, granulosa, ad marginem perforata. 



Cells lozenge-shaped, nearly immersed, having their surface 

 granular, and pierced with a single row of large punctures 

 round the margin. The cells are separated from each other by 

 raised lines. Mouth semicircular, apparently armed when per- 

 fect with three teeth on the upper margin, but in all the speci- 

 mens I have seen only the stumps remained. The lower margin 

 of the mouth is straight and considerably pouting. A den- 

 ticle is situated within the lower lip, but is so deeply seated that 

 it cannot be seen when the cell is viewed in front. The ovicells 

 are round and nearly immersed, being only slightly convex. 



