68 PECTIXIA. 



Eusmilia alticostata M.-Edw. & 11. 



Several specimens in the Museum from Florida agree better witli 

 the description of this species than with the description and figure of 

 Eii-siji/7/'f( mperu M.-Edw. & II. (not Eiiphf/Ula axpcra Dana), of which I have 

 no typical specimens for comparison. As suggested hy M.-J]d\vards and 

 Ilaime, this may be only a variety. The columella in our specimens is 

 very little developed ; the costa' thin, foliaceous. forming a succession 

 of lobes, extending far down, very indistinctly or not at all sen-ate. 

 The calicles are generally considerably smaller than in Eiisuiilld /n.^li- 

 (j'lala. The differences thus appear to l)e more considerable than the 

 short description of Milne-J]dwards and Ilaime would suggest. 



Florida Reef, rare ; Agassiz, Pouitales. 



DICIIOCCENIA M.-Euw. & II. 

 Dichocoenia Stokesi M.-Kdw. i*»; II. 



/). .SV»/.rN;/ M.-Knw .^ II. Ann. S ■. Xal , V .Scr., t. X.. p. lior, PI. 7, (!;.'. :!, IS-1!). 



The Museum has but three speciuu'us of I)ichoc(euia from Floiida. 

 which ])resent consideral^le differences among each other, particularly 

 with regard to the intercalicinar surface, which in the larger specinuMi 

 is entirely occupied by thick granular costa\ the calicles being uuuh 

 more crowded tlian in Milne-F]dwards and Ilaime's figure. In fbe 

 others, which are young specimens, these s])aces are coarsely granular, 

 with less distinct cost;\3. There is also considerable diversity in the 

 development of the pali. They are all referred jjrovisorily to the 

 al)0ve species. A specimen fi-oni llayti resembles the figure more 

 closely. 



It is quite difficult to make use of the descriptions and figures of the 

 various species established by Ducliassaing and Michelotti, which are 

 mostly based on ver\' vai'ial)le cluiracters. 



PECTIMA Okk.n. 



Pectinia maeandrites iM.-Knw. it II. 



Very rare. When examined with a nuiguilier, the septa are seen to 

 be distinctly though very finely serrate. 



