254 ZOOPHYTES. 



Arrangement of the Species. 



A. CONVEX OH HEMISPHERICAL NOT GIBBOUS OR CLAVATE. 



a. Septa acute or subacute at apex. 



I. Gyri short. 



*1. M. dedalea. *2. M. spongiosa. 



II. Gyri long. 



*3. M. labyrinthica. *8. M. phrygia. 



*4. M. strigosa. *9. M. gracilis. 



*5. M. interrupta. *10. M. tenuis. 



*6. M. rustica. *11. M. filograna. 



*7. M. valida. 



b. Septa stout and truncate at apex. 

 *12. M. cerebriformis. *13. M. truncata. 



B. GIBBOUS OR CLAVATE. 



*14. M. mammosa. 16. M. caudex. 



15. M. cylindrus. 



A. M. CONVEXjE, HEMISPHERIC.E, NON i; I Kilos K NEC LOBATO-RAMOSJB. 



. Septis apice subacutis aut acutis. 

 I. Gyris brevibus. 



1. MEANDRINA DEDALEA. (Ellis.) 



M. hemispherica ; discis subgyrosis, brevibus, scepius pollicem Imgitudine 

 non super antibus ; gyris 3'" latis. Corattum cettulosum ; collibus 

 acuto-triangulatis ; fossis 3'" profundis ; lamellis valde incequalibus 

 et incequaliter exsertis, eroso-denticulatis ; septis basi viz J'" crassis. 



Hemispherical ; with the submeandering disks short, seldom over an 

 inch long ; gyri 3 lines broad. Corallum with the fossse 3 lines 

 deep, ridges acute-triangular ; lamellae much unequal and unequally 

 exsert, eroso-denticulate ; septa scarcely J a line thick at base. 



Plate 14, figs. 12 a, 12 b, sections of cells, of a specimen from the 

 Feejees, showing profile of lamellee, natural size; 12 c, vertical section 

 of the corallum, natural size. 



East Indies. Feejee Islands. Exp. Exp. 



