40 AXOHELIA DUMETOSA. 



marked near the calicle than the base, finely serrate. Septa somewhat 

 exsert, rounded, granulated, in four cycles not equally developed in all the 

 systems. Calicle suboval, deep. Columella spongy, well developed. Endo- 

 theca not very abundant. 

 Barbados, 100 fathoms. 



LOPHOSMILIA M.-Edw. & H. 



Lophosmilia rotundifolia :m.-Edw. & H. 



PI. VII. figs. 2, 3. 



A fine coral dredged in Barbados agrees in every essential particular with 

 the description of the above species, except in the columella, which is con- 

 siderably thicker than in the figure of M.-Edwards and Haime, so that it 

 scarcely deserves the name of lamellar, still it is much elongated and ob- 

 scurely trilobed, so that it may be simply a variety. Duchassaing, in his 

 Eevue des Zoophytes et des Spongiaires des Antilles, 1870, asserts that this 

 species is only a young and still simple corallite of a compound genus which 

 he has named OxysniiUa rotundifolia. The specimen in question is undoubtr 

 edly adult, and shows no signs of gemmation. 



Family STYLOPHORIDiE M.-Edw. & H. 



On re-examining the subject, it seems to me preferable to retain the generic 

 name of Axohelia, which I had joined to Madracis, for the species with com- 

 pact coenenchyma, and the latter name for those in which it remains cellular. 



AXOHELIA M.-Edw. & H. 



AxoheUa (Stylophora) dumetosa Duch. 



PI. VIIL fig. 1. 



To Duchassaing's description ought to be added that there are always ten 

 equal septa, hence it is no Stylophora. The columella is pointed, and is hir- 

 sute as well as the septa. The branches are 8 to 10 cm. high, slender, 6 to 

 8 mm. in diameter at the base. Color white with purple polyps. 



Barbados, 100 fathoms. The Museum possesses also a specimen from St. 

 Thomas, presented by Dr. Duchassaing, but without label. 



