BULLETIN o'J, UNITED STATES NATIONAL MUSEUM. 171 



Tlie l;i>l i)ul)lislicd accouTit of the Hawaiian Poritida' i.s l)v Bernard." He. in 

 ordoi' to escapi- exproti.sing an opinion a.s to the probal)le specitic value of the various 

 forms dosci'ibod l)y him, attaches to each one a numl)er, j)receded by an adjective 

 indicatinij tiie locality. The following list is compiled from his memoir: 



P. hawaietiiiis pnina = P. niard'i.r Dnua. 



-\-P. morda.f var. tlonyi/ta Dana. 



P. hawaietufis secu7ida = P. (ompressa Dana. 



+ ? P. coinjii'i'xxa Quelcli. 



I', hawaicntiis ie>'tia = I'. lohat<( Dana. 



P. hawai^nsis qua7't(i= Synai'sea in'egidarin Verrill. 



/'. haivalensls qiiiiita, B. M. N. H.*= P. IiuIIxikh (^iiclch. 



P. hawaioisls sexta, B. M. N. 11.*= 7'. lichen Quek-ii (not Dana). 



P. hawaiensis septima, B. M. N. H.*=/'. compres-ia Quelch (not Dana). 



P. /nfira/'en^iti acta I'd, B. M. N. II. *=/'. /e««/.v Quelch (/?«?■/) (not Verrilll. 



y. /i(iwiiii'»t!/s /)o)ia = I\ 'ji'i//<'/i/' Studer. 

 From Lavsan, Bernard recotrnizes the folhuving forms: 



/'. laysitna primci = P. lannyinufiii »Studer. 



y. /ai/xima secrmda =P. xchaimidandi Studer. 



P. laynana tertia = P. dlxcoidea Studer. 

 Apparently only those I'drltis from the Hawaiian Islands considered h\- (^uelcii 

 in his report on the Ciiallenger Reef Corals are represented in tlie British Museum. 

 The United States National Museum now lias a fairly good collection of this genus 

 from these islands. It is here necessary to refer only to those forms previouslv 

 recorded by Quelch, and allude to /'. iii<ml<i,r var. ehmyata Dana. The last is not 

 even ciosel}' related to /'. mordax. l)ut is a varietal form of /'. compresm. P. bidhusa 

 Quelch is treated in this memoir as a forma of P. rompn-xxK. P. b'c/ien Quelch is 

 the young of a form of /'. loJinta; the P. niinpreisxa of Quelch is correct!}' identified; 

 P. tenuis Quelch (not Dana) is a form of /'. lohata. 



The United States National Museum is fortunate in possessing the original tvpe 

 specimens of the three species and one variety described ))y Dana from these islands, 

 and the types of his /'. lichen and P. ridiculoxa and Verrill's /'. tenuis. I have there- 

 fore redescribed these types of Dana and Verrill, and have included the descriptions 

 of Studer and the description of /'. iiTeynlnrix Verrill (originally as Symwiva), as 

 well as desi-ribing all the material collected by the Alhatroxx in 19():i, a series of b'2 

 specimens sent me by Dr. W . T. Brigham, a number of specimens collected by Dr. 

 .1. K. Duerden, donated to the United States National Museum by the Carnegie Insti- 

 tution, and a large amount of materi;ul belonging to the American Museum of Natural 

 Histor_y, also collected by Doctor Duei-den, and kindly loaned for study. The treat- 

 ment of the species is only tentative, but it is felt that it is the best that is at present 

 possible. As the septal ari'angement in /'. diseoidca, P. xchuHinxInndi, and /'. 

 irregularis could not be ascertained, the following synopsis of the species of the 

 genus is not altogether satisfactorj-. 



"Catalogue of the Madreporarian Corals, Brit. Mus. (Nat Hist.), V, Pontes of the Indo-Pacific 



Region, 1905. pp. 99-lOt!. 



''Till' (U'sifinations t'ollowi-il by H. M. >». H. are represented in the Uritish Museum (Natural 

 History). 



