TRIBE I. ASTRJ3ACEA. 193 



4. MANICINA MEANDRITES. (Esper.) Ehrenberg. 



M. breviter turbinata, convexa, aggregata ; gyris sinuosis, aqualibus, 

 f " latis. Corallum fossis et collibus bene triangulatis, his fere suba- 

 cutis, scepius sukatis. 



Short turbinate, convex, aggregate ; gyri sinuous, and of nearly uni- 

 form width, | of an inch broad. Corallum with the fossae and 

 ridges triangular, the latter nearly subacute, and usually sulcate. 



West Indies. 



The even triangular ridges and trenches distinguish this species. 



Fungus lapideus, major, undulatus, Hans Meandrina pectinata, Schweig. Hand. 420. 

 Sloane's Jamaica, i. 56, tab. 18, fig. 5. Manicina mceandrites, Ehrenb., op. cit. 

 Madrepora mceandriles, Esper, i. 79, tab. 4. Gen. Ixiii. sp. 7. 



5. MANICINA HISPIDA. (Ehrenberg.) 



M. brevissime turbinata et semiglobosa ; gyris 8-9'" latis. Corallum 

 collibus 3-4'" latis, passim truncatis et concavis ; fossis J" profundis; 

 lamellis subito declivibus, basi dilatatis, latere hispidis ; septis perpen- 

 dicularibus. 



Very short, turbinate, and semiglobose; gyri sinuous to ^ of an 

 inch broad. Corallum with the ridges ^ to $ of an inch wide, 

 every where truncate and concave; lamellae abruptly inclined, dila- 

 tate at base, laterally hispid ; septa perpendicular. 



West Indies. 



Manicina hispida, Ehrenberg, op. cit., G. Ixiii. sp. 8. 



6. MANICINA PR^ERUPTA. (Ehrenberg.) 



M. turbinato-semiglobosa, gyris fere " latis. Corallum collibus fere 

 perpendicularibus, et scepius integris, lamellis basi parce dilatatis, 

 apice subtruncatis, latere arenosis ; fossis 4-5'" profundis, 2-4'" latis. 



49 



