86 MILLEPORA. 



slight depression, and are surrounded by five or six small ones. This 

 arrangement is subject to many exceptions, however. The smaller 

 calicles are about half the diameter of the larger ones. This species 

 incrusts foreign objects, like the other ones. It is represented on a 

 Gorgonia by Seba, Tab. 106, No. 8. A similar specimen is in tlie 

 Museum, collected by myself in Florida. 



Millepora alcicornis Lamk. 



J\Iillcpnra alricnrniri (pars) LiNN. 

 Alillejinm alcicornis Pallas (var. a, 1 and 2). 

 Mlllcjiora alcicornis Espkk. (var. a, and 2). 

 Millepora alcicornis Dana. 

 Millepora alcicoi-nis DucH. & Micir. 

 Millepora crista-galli Duch. & Mich. 

 Millepora delicatula Duch. & Mich. 

 Millepora Schrammi Duch. & Mich. 



This species is very polymorphous, but in general can be recognized 

 by its small and nmnerous digitations, showing a tlaljcllate tendenc}', 

 sometimes flattened into a coxcomb shape at the end of the branches ; 

 very small calicles, Avithout depressions generall3% or if so, both large 

 and small in saucer-like pits. Duchassaing and Michelotti have appar- 

 ently multiplied the species unnecessarily; one West India form is, 

 however, probaljly different, being very slender from the stem to the 

 liranches, spreading, and seldom coalescing; it is probal)ly the vari- 

 ety ramosa Pallas ; Millepora nujtosa Dana. I have not oljserved it in 

 Florida. 



