34 KKCKNT MADKKI'OKAUIA OK TIIK HAWAIIAN ISLANDS AND LAYSAN. 



l\ loliaia foriiui infuudihidiiin \"iuij;liiiii. 



P. lohata forma parvicaly.v Vaughan. 



/'. hilintii forma irtitrnlix suhforma (iI/iJhi Vau<;haii. 



/'. lohdtd forma centndi^ sul)f()niia Ixtit Vaui!:liaii. 



/'. hilmtii forma centralix suhforma ijinnnKi Vaii.u'liaii. 



/'. loltitid forma rrnlralis siilifoiiiia thlta Vaii_<;liaii. 



/*. liJmtii forma ivntraJis siil)f<)i-ma cjisUuii Vauglian. 



/*. Iiihiihi fonna njicrld X'aiiuliau. 



Porifc-s ijnclckl Studcr." 



Poriteo hrujiinin! \ aiij;lian. 



Porlte>< hmucjhwsa Studor." 



Parites dij^coidea Studtu-." 



Poritex KcJutiiiihsIandi Htiuler." 



Porites irrejjidarls Verrill." 



Poriteff JiawallcfistK Vaughan. 



Alveopora rerrllluDxi Wmwi. 

 Of tile 77 spcrie.s or subdivisions of species liore listod '2 arc queried. Th(> first, 

 MontijX'ra Jiernardi. occurs at a depth between 23 and 34 fathoms. It may have 

 been obtained at a depth cither greater or less than 25 fathoms. The k)cality of the 

 second queried species, Alveopora, verrlllidna^ is not positively known ; it may not have 

 come from the Hawaiian Islands. Data, as indicated V)v reference to a footnote, are 

 deficient for 12 of th<^ forms. As we know, however, something of the conditions 

 under which they were collected, we feel assured that they came from very shallow 

 water. 



SPECIES LIVING BETWEEN 25 AND 40 FATHOMS. 



Pocillopora cespitosa var. iKi/san, ,/s/.s \'aughan. 



Poc'dlopora meaiidriiid \ar. imhUis Verrill. 



Pavona varimix VerriU. 



Leptomris fuiwaiierhKiii Vaughan. 



Le])toxor>!< Kccdira Vaughan. 



LcpfoKi rix di(jilata \'aughan. 



LepUmerh tidmUferd V'aughan. 



Mont'tpora rrmicoKa (Lamarck). 



Montipirra tcnnlcaulis Vaughan. 



Monti.poro hrriiardi Vaughan i. 

 ' M. hernardi, var. suh</hdrrii ^'aughan. 



Mont'ipora atuderi Vaughan. 



Poritex studerl Vaughan. 



Por'dex hei'mirdi \'aughan. 

 This list, containing the names of 14 forms, is interesting, as it shows that sev- 

 eral of the more strictly reef species may live at a depth as great as 30 or 40 fathoms. 

 Four of the five genera present are reef builders, Imt one of them, Porites, is repre- 

 .sented by forms sufilciently diilcnMit to be considered distinct .species. 



The differences observed between individuals of the .same species and different 

 species of the same gen era (as, for instance, Montipora and Porites), living at depths 



" I'optli iiiit fiiven, Imt the assiiniption seems safe. 



