238 
THE VOYAGE OF H.M.S. CHALLENGER. 
MADREPORARIA.—I. to XVI. 
Note.—Those figures which represent enlarged views, are marked in the plates with 
the amount of magnification ; the remainder of the figures are of the natural size of the 
objects represented. The locality at which each actual specimen figured was dredged is 
given in each instance, 
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PLATE I. 
. Caryophyllia levicostata. a Mouth of the calicle of the same specimen. Off 
Ascension Island. 425 fathoms. 
. Caryophyllia clavus, var. transversalis. a Mouth of the calicle of the same 
specimen. Off the Ki Islands. 129 fathoms. 
2. 3. Caryophyllia paucipalata. a Mouth of the calicle of the same specimen. Off 
Fig. 8. 
Fig. 1 
g 
Culebra Island, Danish West Indies. 390 fathoms. 
. Caryophyllia communis. a Mouth of the calicle of the same. Lat. 42° 8’ N., 
long. 63° 39’ W. 1250 fathoms. 
. Caryophyllia communis. Lat. 37° 24’ N., lone. 25° 13’ W. 1000 fathoms. 
Fig. 6. 
Caryophyllia profunda, mass of examples fused together. a Mouth of one of the 
calicles of the same specimen. 6 Part of the wall of one of the calicles, to 
show the arrangement of the coste. Off Nightingale Island, Tristan 
da Cunha group. 150 fathoms. 
. Caryophyllia lamellifera. a The same enlarged. 6 Mouth of the calicle. Off 
the Kermadec Islands. 630 fathoms. 
‘aryophyllia rugosa. a Mouth of the calicle of the same. 6 Portion of the wall 
enlarged to show the transverse lamellee upon it. Off the Ki Islands. 129 
fathoms. 
PLATE II. 
Pleurocyathus biunneus, attached by its side near the apex of its base to a frag- 
ment of volcanic rock. a@ The same enlarged, viewed from the side. b Mouth 
of the calicle of the same. c¢ Portion of the wall of the calicle of the same, 
