extending further into valley. Larger ones with 709 

 ieeth, directed ohlic{uely upwards. Slightly exsert, ex- 

 sert ends toothed. Continuous over colline. Sides some- 

 times ^ough. Columella absent but septa converge to- 

 wards centers, which are connected by 2 or 3 toothed 

 lamellae. Jhin epitheca covers under surface to within 

 10 mm of edge. 

 49. Isophylliasinuosa (Ellis and Solander) , (Plate 39) 



Also Jsophyllia jragilis (Dana) , and Isophyllia dis- 

 psacea (Dana), (Verrill 1902). 



Described by Matthai (1928), pages 237-247. 



Color variegated with patches of lavender, bright 

 green and white. Frequently bright green is predomi- 

 nant in the Florida Keys. 



TAedium size, massive, with short stalk, up to 6 or 

 8 inches. Valley continuous, lobes radiating from 

 center, average width 22 mm widening towards rim, up 

 to 3 5 mm, depth 8-iO mm. Valley becomes discon- 

 tinuous in older colonies, losing radial arrangement. 

 Circumscribed corallites possess one or two columellar 

 centers. Colline usually ridged, sometimes with shallow 

 groove above, swollen at base, 3-8 mm. Septa 7-9 

 per cm, 4 or 5 principal, very sloping margins which 

 have 6- 10 slender coarse teeth, lower ones larger, di- 

 rected oblicjuely upwards, sides spinulose. Septa thicker 

 towards columella, usually 2 mm. Principals exsert to 

 5 mm at edge of corallum, elsewhere 2 mm. Septa 

 continuous over colline or meet in groove, extending 

 to pedicel. Jhin epitheca over non-calicinal surface 

 except within iO mm of edge. Variety dipsacea more 

 spinous and heavier corallum, collines and septa thicker 

 so that septa appear more crowded. Variety fragilis 

 less spinous and lighter corallum, collines and septa 



98 



