442 ON DEEP-SEA AND LITTORAL CORALS. [May 16, 



from the septa, is lamellar and granular, the granules being long. 



It is long, arched, and thin at the surface. 



Height of corallum 1| inch. Breadth of calices T V"A mcn> 

 Locality. Galapagos Islands. Collected by Mr. Darwin. 



EXPLANATION OF THE PLATES. 

 Plate XXXVIII. 



Fig. 1. Conocyathus zelandice, nat. size. 



2. Ditto, coral, magnified. 



3. Ditto, calice, magnified. 



4. Deltocyathns orientalis, side view. 



5. Ditto, side view, magnified. 



6. Ditto, calice, magnified. 



7. Ditto, a septum, magnified. 



8. Paracyathus persicus. 



9. Ditto, side view, magnified. 



10. Ditto, calice, magnified. 



1 1 . Paracyathus coronatus, side view. 



12. Ditto, side view, magnified. 



13. Ditto, calice, magnified. 



14. Polycyathus atlanticus, side view. 



15. Ditto, side view, magnified. 



16. Ditto, calice, magnified. 



Plate XXXIX. 

 Fig. 1. Agelecyathus persicus, side view. 



2. Ditto, side view, magnified. 



3. Ditto, calice, magnified. 



4. Agelecyathus helencp, group. 



5. Ditto, costae, magnified. 



6. Ditto, calice, magnified. 



7. Brachytroclms simplex, side view. 



8. Ditto, costce, magnified. 



9. Ditto, calice, magnified. 



10. Ditto, septum, magnified. 



11. Javania insignis, side view. 



12. Ditto, upper part, side view, magnified. 



13. Ditto, calice, magnified. 



Plate XL. 

 Fig. 1. Oculina cubaensis, group. 



2. Ditto, calice, magnified. 



3. Cylicia tenella, var., calice, magnified. 



4. Placopsanunia darwini, calice, magnified. 



5. Dendrocora fissipara, nat. size. 



6. Ditto, coste, magnified. 



7. Ditto, calice, magnified. 



8. Astrangia minuta, calice, magnified. 



9. epithccafa, calice, magnified. 



Plate XLI. 



Fig. 1. AntiUia lonsdaleia, side view, nat. size. 



2. Ditto, calice, nat. size. 



3. Sclerohelia hirtella, calice, magnified. 



4. Ditto, second calice, magnified. 



5. Balanophyllia helenm, nat. size. 



6. Ditto, calice, magnified. 



7. Balanophyllia striata, nat. size. 



8. Ditto, costa?, magnified. 



9. Ditto, calice, magnified. 



