218 ZOOPHYTES. 



Astrcea microphtJudma, Lamarck, ii. 409, Astrcea microphihalma, Lamour., Encyc., 



No. 10. 130. 

 , Blainville, Man., 370. Favia microphthcdma, Ehreub. G. lix. sp. 1 . 



16. A. ORBICELLA OCELLINA. (Dana.) 



A. glomerata et lobata, scepe incrustans ; polypis vix 1'" superantibus, 

 lamellis 24. Corallum caliculis globoso-cylindricis, minoribus, non 

 lineam super antibus, et s&pius 12 lamellis minutis teque exsertis, inter- 

 stitiisferenudis; celld profunda : transverse secto,s eptis subsolidis et 

 stellis pauciradiatis. 



Glomerate and lobed, often incrusting ; polyps scarcely exceeding a 

 line in breadth, lamellte 24. Corallum with the calicles globoso- 

 cylindrical, as in the microphthalma, but smaller, with 12 minute 

 lamellae equally exsert ; interstices nearly naked ; cell deep : in' a 

 transverse section, septa nearly solid, and stars few-rayed. 



Plate 10, fig. 10. 



Sandwich Islands. 



This species forms lobed glomerate masses, having an ascending 

 mode of growth. The calicles are unequal, and in the lower concave 

 portions of the corallum, are almost wholly immersed, while in other 

 parts they are sometimes nearly a line exsert. Like the preceding, 

 the internal texture below the cells is very minutely cellular. It is 

 sometimes found in thin incrusting plates, and thus forms a passage 

 between the Astrseas and the Echinopores. 



This species and the preceding are also near the Oculinse ($ 80). 



SUBGENUS II. SIDERINA. 

 17. A. SIDERINA GALAXEA. (Ellis.) 



A. incrustans et glomerata, inter dum subglobosa, polypis non prominulis. 

 Corallum subcellulosum; cellis immersis subprofundis, scepius l"' latis, 



