POLYPI. 85 



SECTION I. 

 Tentacles twelve. (Phytocorallia dodecactinia EHRENB.) 



Family VIII. Madreporina (Madreporina and Milleporina 

 EHRENB.) Polypary secreted by the Polyps, stony, supplied with 

 polypiferous cells, usually ramose or expanded, lobate. Tentacles 

 short. 



Madreporalu. (exclusive of many species) , LAM. (Forties EJUSD. 

 Heteropora and Madrepora EHRENB.) Polypary stony with cells 

 circumscribed, lamellose, often prominent, with porous interstices. 



Sp. Madrepora palmata, Heteropora palmata EHRENB., Madrepora muricata, 

 var. ESPER Pjlanzenth. Madrepor. Tab. LI. On the animal of this species 

 comp. LESUEUR, Mem. du Mus. vi. pp. 290, 291, PL xvn. fig. 18. Madre- 

 pora dbrotanoides, Madrepora muricata PALL., QUOY and GAIMARD Voyage 

 de VUran. PI. xcvi., GUE'KIN Iconogr. Zooph. PI. xxui. fig. 10. Madre- 

 pora pociUifera LAM. &c. 



Pocillipora LAM. Polypary stony, ramose, with cells of slight 

 depth not lamellose, contiguous. 



Sp. Pocillipora damicornis LAM., ESPER Pjlanzenth., Madrep. Tab. XLVI. 

 and XLVI A. &c. 



Genus Nullipora LAM. Syst&me des Ani. s. vertebres 1801. p. 374. 

 (Millepores with pores not evident Hist. nat. des Ani. s. vertebres n. 

 p. 311) according to EHBENBERG is in part to be brought here. 



Seriatopora LAM. (in part). Polypary stony, ramose, with cells 

 disposed in longitudinal rows, with margin slightly prominent. 

 Polyps with the structure of the dodecactinia, destitute of tentacles. 



Sp. Seriatopora subulata, Millepora lineata L., ESPER Pjlanzenth. Millep. 

 Tab. xix. 



Millepora L. (exclusive of species) Polypary stony, ramose, with 

 cells deep, obsoletely or not at all lamellose, separate, scattered. 



Sp. Millepora alcicornis L., ESPER Pjlanzenth. Millep. Tab. v, vn, xxvi, &c. 

 (Here also the Polyps appear not always to possess arras). Many species 

 which were formerly placed amongst the Millepora are now ranked in other 

 genera. Millepora truncata, the genus Truncularia WIEGMANN (Handb. 

 der Zool.), Myriopora BLAINV. belongs to the Bryozoa, EHRENB. Die Coral- 

 hnthiere des rothen Meeres, ss. 126, 154, MILNE EDWARDS in 2nd edition of 

 LAMARCK Hist. Nat. des Ani. s. v. p. 306. 



