80 ZOOPHYTOLOGY. 



Polyzoariam small, branched, attached by an expanded base, branches 

 irregular terete ; tubes exserted, border of orifice toothed ; surface sparsely 

 punctured, porcellanous, irregularly sulcate ; posterior sparsely punctured 

 like the anterior. 



Hab. — Madeira, /. Y. L. 



This Hornera appears, from the specimens furnished, to be 

 of small size, probably not exceeding an inch at most in height. 

 The erect, irregularly branched growth arises from a wide, 

 expanded, discoid base, and the branches taper towards the 

 ends. The character of the surface and the pectinate border 

 of the orifice suffice at once to distinguish it from any other 

 species, recent or fossil, with which I am acquainted. 



{To be continued.) 



DESCEIPTION OF PLATES XXXII & XXXIII. 



PLATE XXXII. 



l.—Scrupocellaria Maderensis, p. 65. 

 2. — Psileschara 3Iaderensis, p. 67. 

 3.— „ (back). 



4. — Cellepora ampuUacea, p. 66. 

 5. — Lepralia multispirata, p. 66. 

 6. — „ X 50 diam. 



PLATE XXXIII. 



1. — Hschara tubulata, p. 66. 



g. — „ (orifice X 50 diam.) 



3. — Membranipora irregularis^ p. 65. 



4. — Hornera pectinata (nat. size). 



5. — „ X 25 diam. 



6. — „ portion of back. 



