APPENDIX. 72 1 



cupy a line in length. The pleiades is a lighter coral, with the stars larger, and the 

 cellules in a vertical section one-half coarser. 



Plate 13, fig. 15, represents a worn coral of uncertain locality, near the porcata in its 

 stars (in a transverse section). Fig. 14 represents a transverse section, and 14 a, a ver- 

 tical section. It is probably from the West Indies. A single cell remains on the specimen, 

 nearly perfect, and from that the interstices appear to be slightly concave with a medial 

 sulcus (nearly as in the porcata) ; the lamellae are thin and evenly regular over the inter- 

 stices, and very minutely denticulate ; the cells rather shallow ; the septa nearly solid, 

 two-thirds to three- fourths' of a line wide; the stars three lines in diameter, many-rayed, 

 with the cellules sparingly decompound. 



Genus Fungia. p. 287. 



The following species has been described by Michelin. 



Fungia distorla. F. suborbicularis, lobata, subtus irregulariter concava, striata, sea- 

 bra ; striis tenuissimis, dichotomis, saepe divaricatis, rugosis, stella convexa, contorta , 

 lamellis inaequalibus dentatis, latere granulosis ; oririma subdivisa. 



Michelin adds that the species is remarkable for its irregular form, it being divided into 

 five or six lobes, one of which lies partially beneath the others ; this character was alike 

 in four specimens examined. The figure represents a specimen one and a half inches in 

 diameter, with the lamellae minutely denticulate. The locality is not given in Guerin, 

 from which work it is here cited. 



Fungia distorta, Michelin, Revue Zool., par la Soc. Cuv., 1842, p. 316 ; Guerin, Mag. 

 de Zool., 1843, pi. 5. 



Pavoniafrondifera. p. 328. 



The references for this species, omitted in the text, are as follows : 



Pavania frondifera, Lamarck, ii. 379. , Deslongchamps, Encyc., 605. 



, Blainville, Man., 365. 



Genus Turbinalopsis. p. 349. 



Ehrenberg proposes to substitute the name Trochopsis for Turbinalopsis, of which he 

 says " Hybridum nomen e scientist removendum est." 



Genus Turbinalia. p. 374. 



The remark that the Turbinalioa are free Dendrophyllise should be modified, inasmuch 

 as we find the Caryophyllia structure also represented among them. The Caryophyllise 

 and Dendrophylliae are so closely related, that although we have attempted to point out 

 distinguishing characters, none can be certainly relied on excepting the mode of budding 

 and growth. 



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