700 ZOOPHYTES. 



GENUS COSCINOPORA. GOLDFUSS. 



Affixes, cyathiformes aut incrustantes. Corolla cakarea, cellis tubufis 

 fibriformibus composite/, ; cellis in quincuncem dispositis, immersis, 

 infundibuliformibus ; inter stitiis angustis. 



Attached, cyathiform or incrusting. Coralla calcareous, consisting of 

 fibriform tubes; cells immersed and arranged in quincunx order, 

 funnel-shape ; interstices narrow. 



This genus, as established by Goldfuss, consisted, as Blainville states, 

 of heterogeneous materials: it was consequently restricted by him to 

 those species having the general characteristics of the Coscinopora 

 infundibuliformis of Goldfuss, and placed with the Madrepore tribe. 

 The above description is essentially that drawn up by Blainville. 



Goldfuss, Petref., pi. 9, figs, a, b, c, and pi. Blainville, Man., 386, pi. 60, fig. 5. 

 30, fig. 10. Lamarck, 2d ed., ii. 458. 



GENUS RECEPTACULITES. DEFRANCE. 

 Coratta cakarea, cellis quadrangulatis,fere contiguis. 

 Coralla calcareous, with quadrangular and nearly contiguous cells. 



The genus Receptaculites, as characterized by Blainville, includes 

 a clypeiform species (R. Neptunii), concave below, and convex above, 

 with a kind of mammilliform summit; cells on the upper surface 

 round, on the under rhomboid or quadrilateral. His characters and 

 figures were taken from Defrance's specimens and others collected 

 from the old formations in the vicinity of Chimey, France. 



The quadrilateral form of the cells appears to be the most promi- 

 nent characteristic, and in this respect it differs from all recent corals. 

 Blainville, in view of its anomalous form and structure, suggests as a 

 possibility, that it may be a fossil fruit, which, however, seems hardly 

 probable. 



