BULT.ETIN 50, UNITED STATES NATIONAL MUSEUM. 99 



Localities. — Heofat KaiuKikakai, Isluiid of MdIoUiu. S colonies and several broken 

 braiK'hes; Penoiiiii Hiiiik. soutli ccjast of Ouliii. Station 4fi81: ilcpth, 27-2S fathoms; 

 bottom, tine coral satiil, foraniinifora, coral; teinpcratiiro at siiifacp, 7t> F. ; 3 branches, 

 probably from tlu' same colony, Albatross 1902. Kahana, Oahu, 2 specimens; Pukoo, 

 ^lolokai, 1 s|)(>cim('n: 2 specimens without definite localities: depth. ?> to (! feet; 

 received from ^\'. '!'. IJriyiiam; lloiioluhi Ueefs. lo to 4o fatiioms. (.^uelch. ^Vaikiki, 

 Oahu, J. E. l)iierden, collector, Laysan, Stiuler. 



Ri'inarl'S. — The United States National Museum has in its older collections three 

 excellent specimens of this variety, one of them comini;- from the Wilkes Exploi'ing 

 Expedition collection. The specimens from the reef at Kaunakakai are typical, 

 judoed both by Vcrrill's description and the specimens in the National Museum. Di- 

 ameter of calices between verruca'. 7 mm.; on verruca', 1mm.; on incrustine- l)ase, 0.7 

 to 0.9 mm. Some of tlie branches in the Alhatross material are wide (see Plate XIV, 

 tig. 4), resembling in form typical P. meandrina. 



The branches in the specimens from Station 4031 are not typical: they are less 

 crowded than in the typical form; the verriicaj are smaller and uniforndy stand more 

 nearly perpendicular to the surface of the branches, and the corallum is much lighter. 

 Other than these, no dill'erenees of importance were detected. The lightness of the 

 corallum ma}' be corellated with the greater depth at which these specimens grew; 

 it was not necessary for them to be so strong as the specimens growing in shallower 

 water. The tips of the verructe in typical nobllis usually inclining toward the ends 

 of the branches may be determined b\' the branches standing nearer together. 

 Verrill in his descrijition of nohllix says that the verruca3 xuiiy be perpendicular. 



I believe that the specimen and fragments from the Hawaiian Islands referred 

 by Quclch to /*. verrucosa constitute onl\' a form of Yerrill's /tohilis, as in some 

 instances the septa may bo distinct and the columella a centi'ai dome. 



6c. POCILLOPORA MEANDRINA var. TUBEROSA Verrill. 



1869. Pocilliporti n<ihlli.s \ni: tiihirin'a Vehkill, I'roc. Kssex liiiJt., \1, j). 9S. 

 1901. PociUipora nobilis var. luherosa Studer, Zool. Jahrb., Syst., L, p. 400. 



Verrill's original description is as follows: 



One speciinen, which T refer with iloiibt to 1'. nohilis, is peculiar in having much larger and more 

 prominent verrucH', which are roumled and often swollen at the cml, or even obovate. Toward the 

 base the verruoe are less prominent and even henii.spherical. The eniis of the branches are 

 enlarged, often lobed, and tliickly covered with verruca-. The lateral cells are of medium size, not 

 crowded, with the sej)ta and cnluinella but little developed. Surface between the cells closely 

 granulous. 



Hawaiian Islands, \V. T. Ilrigbain. 



Reinarhs. — The type, No. 1270, Yale Universitj' Museum, was examined. The 

 corallimi is about 16 cm. tall, and the branches are not so crowded as is usual in 

 /•". riohiUfi. The verrucas becomes ol)solete toward the base. 



Prof. W . T. Brigham has sent one specimen of this variety to the United States 

 National Museum. It ditiers from variety* )iohills by having large verruca', usually 

 swollen on the ends. The locality label was unfortunately lost. 



