/..3 
A number of other name® need to ba considered la greater or le#e 
detail. 
1/ 
Gregory applied the name Orbicolla nor op era to tfaio 
jt/ Quart. Jour. Gaol. Soc. London, toI. t»I » p. STS, 1895. 
specie®. Ho accepted the dotorminat ion of the epacio® by Mila® Sd« 
1/ 
ward® & Haim®, whp' separated it from £. annul&rla fey lt& hmlng no eept* 
2/ Hist. Hat. Corall. t. II, p. , 1857. 
correspond lag to the last cycle of costae. Gregory showed that ocoaeion* 
ally in typical specimen® of 0., annularis the last cycle of septa may 
be absent while the costa® are present, thus breaking down the character 
used by Milne* Edward® A Haim© fee differentiate the species. I accept** 
ed Gregory*® conclusion, and followed Mm In mj paper on "Some fossil 
coral® from the elevated reef s of Curasao, Aruba, and Spaa ire,* and 
subsequent papers, Prof. Terrill, in his "Variati one and nomenclature 
1/ 
of Bermudian, feet, Indian, and Brazilian reef corals,* declare® that 
3 y frans. Conn* Acad. Sci • , voX, XI, p. 94, 19-02. 
Hadrepora as r opera Linnaeus *i s utterly Indeterminable** and take® the 
next younger name, annularis Ellis and Solaader, for the specie®. Sub- 
sequent study convinced m that Prof. Terrill wad right, and t pub** 
my c hang® of opinion in a little paper on f, So.a® recent changes 
' y 
in the nomenclature of West Indian coral®.* therefore* I now believe 
4/ Biol. See. Washington Pros., voi. XT, p. 96 » 190ft. 
that Mad repo ra aoropora Linnaeus should fe© considered as undeterminable , 
