TABULAT.E. 



219 



Suborder TABULATE Agassiz. 



Tabulatce Agass. Sill. Journ., XXVI. p. 140. 1858. 

 Coralhtria Tahulata Ei>\v. & IIaime. Aroliiv dti Mus., V. 

 Miulreponirui Tuhulnta ICnw. & IIaime. Hist. Corall., III. p. 223. 18C0. 

 Tabulatce Agass. Cont. Nat. Hist. U. S., IV. p. 292. 18C2. 



Family MILLEPORID^ Agass. 

 MILLEPORA Llnn. 



MiUepora Linn. Syst. Nat. 



Millepora alcicornis Lin. 



Millrpora alcicornis LiK. Syst. Nat., X. 1 758. 



Millepora alcicorni.<i Dana. U. S. Ex. Exp. Zoophytes, p. 543. 



Millepora alcicornis Edw. & Haime. Hist. Corall., HI. p. 228. 



Millepora alcicornis Agass. Cont. Nat. Hist. U. S., III. p. 292, PI. 15, Fifjs. 3-13. 18G0. 



Millepora alcicornis Veruill ; in Bull. Mus. Comp. Zobl., p. 59, No. 3. 18C4. 



The absence of radiating partitions in the Tabulatae seems to show, 

 without much doubt, that their true place is among the Hydroids. It 

 is true that Professor Agassiz has not observed the Medusa) buds on 

 the specimens he has figured (Fig. 358), yet the Ilydroid character 

 of the animal, and their similarity to Halocharis-like Hydroids, is very 



Fig. 353. 



Fig. 359. 



Fig. 360. 





striking. It certainly is not more wonderful to have among Acalephs 

 Hydroids which should deposit hard limestone parts (Figs. 359, 300), 

 as Millepora and the like, than it is to find among the Polyps animals 

 in which we find partitions of every stage of hardness, from a gelati- 

 nous or a homy nature, to the most solid deposits of limestone. We 

 have already something of the same diversity in the formation of the 



Fig. 358. Magnified view of extended Hydroids of Millepora. o, a, small Hydroids ; b, larger 

 ones ; m, mouth ; t, tentacles. 



Fig. 359. Branch of Milh'pora alcicornis ; natural size. 



Fig. 300. Transvci-se section of braucli. «, a, pits of Hydroids. 



