294 NATURAL HISTORY OP 



1. C. coRNUTAj LinncPAis. Plate XXII. fig. 5. 

 Sertularia cornuta {Linn., Esper, Berk.), Cellularia 



falcata (Pallas), C. cornuta [Brngiere) , Cellaria cornuta 

 {E. and 8., Lamh.), Eucratea cornuta {Lamx., Flem., 

 Temp., Cuvier), Falcaria cornuta (Oken), Eucratea 

 appendiculata [Lamx.], Unicellaria cornuta {De Bl.), 

 U. appendiculata [Be Bl.), Crisidia cornuta [M.-Eclw., 

 G. J., D. L., P. H. G., Aid., A. M. N., D'Orb., Busk), 

 0. setacea {!). L., B. Q. C, G. J.), C. geniculata [M.- 

 Ediv., G. J., P. n. G., I). L., Sars.), Filicrisia geniculata 

 (D'Orb.). 



Hab. : Cornwall (R. Q. C), South Devon, Ilfracombe, 

 Filey, Oban (T. H.), Northumberland (Alder), Shetland 

 (A.M.N.), Menai Straits, Jersey (A. 8. P.). 



This is the " Goat's-horn Coralline " of Ellis, who 

 says : '' This very small capillary coralline consists of 

 branches of single cells, shaped like goat^s horns in- 

 verted, placed one above another, on the top of which 

 is a small circular opening which inclines inwards. At 

 the back is a fine upright hair near the insertion of the 

 cell next above it.'^ It grows in slender tufts to a 

 height of J to 4 an inch. The cells are placed in 

 single series and are curved, as shown in the plate. A 

 variety (geniculata) occurs in which the cells bend 

 alternately in opposite directions. The ovicels are 

 oval, dotted with specks. The zocecia are sometimes 

 punctured, and at other times entirely without markings. 



2. C. EBURNEA, Linnceus. Plate XXII. fig. 6. 

 Sertularia eburnia (Linn., Jameson, Esper, Berk, &c.), 



Cellularia eburnia (Pallas, Llogg, Brvgiere)^ Cellaria 

 eburnia (E. and 8., Lamk., G. J.), Crisia aculeata 

 (Hassall, G. J., Busk), C. Haueri (Reuss), C. ivoire 

 (De Bl). 



