A. E. Verrill — Bermudian and West Indian Reef Corals. 125 



liaps the briglit green colors are more common in this species. The 

 tentacles are less numerous. 



When full grown this species is often 6 to 8 inches (150 to 200"""') 

 in diameter and 4 to 5 inches thick. 



When the calicles are crovv^ded resorption of portions of the 

 collines may break them up into detached cone-like or columnar por- 

 tions, or may simply cause interruptions of their continuity. 



Specimens partially killed by injury to the calicles may repair 

 themselves by budding out new cup-shaped calicles from the muti- 

 lated parts, and then the new growth may go on just as in the case 

 of young ones arising from eggs. 



During the spring of 1901, owing to a period of unusually cold 

 and stormy weather in February and March, many dead or partly 

 dead specimens of this species and I. dipsacea were seen, in place, 

 and even those that seemed to be uninjured refused to expand, 

 though in previous ^''ears they expanded very freely in confinement. 

 They expand best in bright sunshine and during hot days. 



This species is common at the Bermudas, in shallow water. 

 Florida Reefs. West Indies to St. Thomas. Probably generally 

 distributed in the West Indies. 



In most collections this species is confused with I. dipsacea, 

 usually under the latter name. It is not always easy to distinguish 

 the two, without careful examination. It is possible that the two 

 forms may eventually have to be united as varieties of one species. 

 But all the numerous specimens of this group that I have hitherto 

 studied can be pretty definitely arranged under the two species, by 

 the differences in the septa and costae. 



The following species seems to be so different that it can hardly 

 be confused with either of the preceding, unless when young. 



Isophyllia multiflora V., sp. nov. 



f Isophyllia multilamella Pourt. , Deep Sea Corals, p. 70, 1871 {non Duch. and 

 Mich.) 



Plate XX. Figure 1. Plate XXV. Figure 1. 



This species is remarkable for the rapid division of the calicles, 

 and the unusually small size of the calicles, which are very crowded, 

 and many of them are isolated or in very short series. 



The collines are mostly irregular, simple, narrow, with a thin solid 

 wall, but in the Tai'ger examples they are often meandriniform. The 

 calicles are rather deep, mostly decidedly stellate, generally 14 or 

 ,15""" in diameter, but varying from 12 to 18""" ; depth 6 to 8™"\ 



