148 KKCKNT MAI)KE1>(»KAKIA OK TUK HA\VAIIA^f ISLANDS AND LAYSAN. 



Scptu in four coiiiiilctc cycles, with inenibers of the fifth present in Vd quurter 

 systems. Their inner ends tend to he fr<'e. septal groups are not so definite as is 

 usually the case in the oenus. The ineiuhers of the fifth cycle ultimately fuse to 

 the sides of the fourth. It might he noted, although this is not a specific character, 

 that th(> lifth cycle originates as a pair of septa in the interseptiul loculus between 

 the third and fourth cycle. .\ccor(iing to the usual notation of the septa, one of tlie 

 lifth is reallv a member of the preceding cycle, while a member of the fifth is called 

 the fourth. Septal margins only slightly exsert. those of the primaries and second- 

 aries ecpially prominent and more elevated than those of the higiier cycles. Margins 

 of the other cycles equal in prominence. The smaller septa are rather coarsely 

 dentate, the inner margins of th(> larger unfortunately are l)roken. Septal faces 

 often transversely undulated, and striate, elongate granulations forming the strire. 



Calicular fossa elongate, narrow, deep, mm. long and 0.75 mm. wide. 



Columella very poorly developed, composed of a few septal tral)eeula'. 



Loca//.ti/. —South coast of Oahii Island, Station 3810; depth, 53-211 fathoms; 

 bottom, tine coral sand; temperature, 17.7^ F. ; 1 specimen. 



Type.— Cut No. 20822, U.S.N.M. 



Genus BALANOPH YLI-IA Searles Wood. 



BALANOPHYLLIA HAWAIIENSIS, new species. 



I 'late XLIV, t\ii>i. 4, -ill, :.. 



C'orallum lirndy attached, elongate, curved. Transverse outline broadly elliptical 

 or circular. 



Mnmuremenlx. 



«,\pproximati'. 



Wall entirely naked, p(>rforate, frequently rather thick and vesiculate, in the 

 lower portion of the corallum it becomes secondarily compacted. Costse correspond- 

 ing to all septa, suljetjual, distinct, but not prominent, with coarse granulations, edges 

 obtusely rounded, bases wide, the int(>rcostal furrows narrow with rather frequent 

 perforations. 



Septa, four com))lete cycles and about half the members of the fifth. There is 

 the usual balanophyllioid grouping about the members of the third cycle, but the 

 imier edges are not fused together above the level of the liottom of the calice. 



