194 



well developed, united to those of the preceeding cycle, which rise 

 up in the form of prominent paliform lobes, beyond which the 

 central region of the cell is deep. Columella very porous, its sur- 

 face papillose. Walls very porous, destitute of epitheca, with scar- 

 cely distinct costae, biit with series of rough granules. (Entpricht 

 durch seineWachsthumsverhältnisse dem Gen. Astrangia in der Gruppe 

 der Oculinaceen.) 



Subord. Oculinaea Verr. wird folgendermassen 

 charakterisirt: 



Corallum simple or Compound , encrusting or branched, of 

 firm tcxture, with imperforate solid walls and septa. Cells gena- 

 rally small, tubulär. Polyps when expanded rising above the cell or 

 long exsert, the mouth protuding, the tentacles 10 — 48, some times 

 more, elongated. the tips usually, if not always, swollen or capitate, 

 their surface covered with small wart-like Clusters of urticating cells. 

 The Compound species increase by basal and lateral badding, and 

 there is tendency to form hard compact corals, the coenenchymc 

 being, when present, very compact, the walls aro often thickcned 

 or the cells may be partially fiUed up and oblitterated (as in Oculi- 

 jiidae. some Stylasteridae etc.). The transverse plates within the 

 cells are usually few and distant, and may be entirely wanting; in 

 some cases they are coincident in all the interseptal Spaces, so as 

 to form continuous tranverse plates or septa (as in Pocilloporidae). 

 The septa of the ürst and secoud cycles, at least, have the edge 

 entire or nearly so, often all the septa are entire. The exterior 

 of the walls is generally more or less costate, sommetimes finely 

 granulous or spiculose, but never strongly spinöse. 



Hielier als flauptfamilien die Stylasterldeii; Oculini- 

 den, Pocüloporiden, Stylophoriden, ?Styliniden, Astrangi- 

 den, Caryophylliden, von denen aber nur vier an der 

 Westamerikauischeu Küste Vertretung finden : die Sty- 

 lasteriden durch zwei Arten des Gen. AUopora Ehr., 

 unter denen A. venusta n. (= A. californica Pourtal.), 

 die Pocüloporiden durch zwei Arten des Gen. Pocil- 

 lopora (von denen aber eine P. capitata Verr. dreierlei 

 Varietäten aufweist), die Astraugiden durch 9 Arten, die 

 CaryophylUden durch 4 (die Turbinoliden durch 1). Die 

 Asti^angiden gehören meist zu dem Gen. Astrangia, das 

 dabei durch A. Pedersejiü und A. {Coenangia Verr.) con- 

 ferta bereichert wird — ausserdem durch A. -palifera aus 

 Ceylon, die aus Versehen mit abgebildet wurde. — Unter 



