I examined Duncan*© type® of Phyllocoenla XI mb at a an; I PI© e last rasa 
ramea in th© Geological Society of London a nd ®&d© a not© fchaiMfeh© Xafc*?. 
tor, except It© s«j>t* ar# brokoii dowa and the sail cog have a bellowed- 
out appearand® ■» Is the same as the former* 
1 la ®y "Some fossil corals fro® the elevated reefs off Curacao , Arab© 
and Bonaire u and ®y "Stony coral® of the Porto Rican .waters, 3 ® I placed 
thee® two a&saes of Duncan in the synonymy of Orb Ice. 11a acropora C s |>* 
annularis ) , eon-eidering the® a growth for® similar to the variation 
described from W@stpunfc.-i Curacao, More detailed studio®, subsequent- 
ly made, have led m to think that I was probably mistaken in that 
course* This coral is very similar to 0* annularis ; However, there 
appear to be two constant, differences, risk the primary septa within 
the calico© are uniformly thicker and usually longer than the second- 
aries (this looser dovolopfaenb of the secondaries is net occasional 
as in 0* annularis but oo&etafti) and small, but distinctly developed, 
pali occur before the primary and secondary septa* 
I have for study one specimen from Duncan*® original material, 
labeled Plesjastraea raaia pun can « kindly sent to the United States 
National Museum by the authorities of the Geological Society of London, 
and 10 specimens belonging to the Museum of Comparative Ecology* The 
first spetlmeab; 1© not in very good condition for study* and dees not 
fit Duncan*® description well* The Museum of Comparative Ecology 
specimens, however, fit exactly, omitting fch® remark© about the costa© 
being covered by epi theca* The figures presented on PI* , figs. , 
are based on nth® a© spec iaene* 
