76 Scientific Intelligence. 



He corrected this mistake in the ed. xii, p. 1 279, where Madrepora 

 muricata appears. Therefore, if we follow the strict rules of 

 priority and go back to ed. x of Linne, we cannot use the name 

 for this genus.* 



The substitute-name that has the prior claim for adoption, and 

 which seems available, is Acropora Oken, 1815. This originally 

 included three generic types : — 1st, Pocillopora damicornis : 2d, 

 a Forties ; 3d, A. muricata (L.). The first two having been 

 eliminated by Link, 1807, and Lamarck, 1816, Acropora should 

 be restricted to the third species, which is the true West Indian 

 muricata. Yaughan uses the much later and objectionable name 

 Isopora Studer, 1878, originally applied to a small section of the 

 genus in which single, prominent axial corallites do not form the 

 tips of branches. 



In my work, cited above, I have restricted Madrepora to the 

 types, M. oculata L. and M. prolifera L., ordinarily referred to 

 Lophohelia and Amphihelia E. and H. 



II. — Mceandra, 1815, versus Platygyra, 1831/.: — It seems nec- 

 essary to restrict Meandrina (Lam., 1801) to the type meandrites 

 (L.)—pectinata Lam., as claimed by Yaughan and others. The 

 next generic name, in order of publication, is Maiandra Oken, 

 1815, in which the first species {areola = Manicina areolata, 

 authors), and also the second and fourth, belong to this group. 

 Ehrenberg, also, definitely adopted this name nearly in the sense 

 used here. Yaughan assumes that M. meandrites should be con- 

 sidered the type of Maiandra, and thus makes it a synonym of 

 Meandrina. This is not logical. Oken includes in this genus 

 one of the meandr ites-gr ou\) by mere accident, it being errone- 

 ously referred to as a variety of a true Maiandra (M. labyrinthi- 

 f or mis (L.) = Diploria), while the four other species were of the 

 Diploria and Coeloria. groups. Moreover, he founded, in the 

 same work, a new genus (Pectinia) for the meandrites-group. 

 This of itself would show that he did not intend to include 

 meandrites in Maiandra. Hence 1 have adopted Mmandra Oken, 

 in place of Meandrina of later authors, but I have reunited to 

 the genus Manicina, Diploria, and Coeloria of Edw. and Haime, 

 for they have no structural or generic differences. Platygyra, 

 used by Yaughan, was given to a subdivision of Maiandra by 

 Ehr., 1834, and would be valid had not Mmandra prior and 

 better claims. 



III. — Maiandra cerebrum (JEllis and Sol., 1786) versus Platy- 

 gyra viridis (Les., 1877) : — This is the common large, rounded, 

 simple-ridged brain-coral that has had many and varied names, 

 but is more commonly called Mmandrina labyrinthica, M. 

 strigosa Dana, or M. sinuosa Les. Evidently none of the early 

 names used for this species are available, except M. cerebrum of 



* In a letter received after this review was put in type, Mr. Vaughan authorizes 

 me to state that he now agrees with me that Acropora should be used in place of 

 Isopora, and in the restriction of Madrepora to the oculata-gvoup. Also in the 

 reunion of Diploria, Manicina (auth.), Coeloria, aud Platygyra = Mceandra in one 

 genus; in the use of Mceandra, in place of Platygyra; and in the use of 0. 

 annularis instead of O. acropora. 



