322 ZOOPHYTES. 



I. Pavonice unifronles hypocrateriformes. 



1. PAVONIA EXPLANULATA. (Lamarck.} Dana. 



P. hypocrateriformis, scepe distorta et lobata, centra affixa. Corallum 

 "-" crassum, lamellis confertis, sub&qualibus, majoribus alternis, 

 laciniato-denticulatis ; oririmis remote spar sis, scepe 2'" langis; super- 

 fide inferno, echinulato-striatd et porosd. 



Hypocrateriform, often distorted and lobed when large, attached below 

 at centre. Corallum J to | an inch thick, lamellae crowded, sub- 

 equal, the larger alternate, laciniato-denticulate ; oririmes remotely 

 scattered, often 2 lines long; under surface echinulato-striate and 

 porous. 



East Indies. Exp. Exp. 



A specimen of this species in the Expedition collections, has the 

 shape of a broad somewhat conical disk, supported on a short pedicel ; 

 it measures six inches by four in breadth, and is two and a quarter 

 inches deep. The lamellae have a coarse appearance, quite different 

 from the other Pavonise, there being but about six of the larger to half 

 an inch in breadth ; there is usually a ragged prominence on some of 

 the lamellae immediately above an oririme. Other specimens seen by 

 the author, were three times the above size, and much contorted. 



This species might well form a distinct genus. It looks much like 

 an inverted pedicellate Halomitra. 



Mad. pileus, Esper, vol. i. tab. 6 ; the Agaricia ezplanata, Lamouroux, Encyc. 



figure, though indifferent, is easily recog- 14. 



nised. , Blainville, Man. 361. 



Agaricia explanulata, Lamk., ii. 383, , Schweig., Handb. 415. 



No. 7. 



II. Pavonice unifr 'antes, foliacece. 



2. PAVONIA CRISPA. (Ehrenberg.} Dana. 



P. pumila (sesquipollicaris], foliacea, hemispherica, frondibus parvis, 4'" 

 latis, distortis, apice rotundatis. Corallum oririmis crebris in facie 

 stirpis inferior e, viz 1'" latis. 



