BULLETIN oi), UNITED STATES NATIONAL MUSEUM. 165 



Cotypes.—Cat. No. 20812, U.S.N.M. 



Remarks. — This species is separatod from M. temdcmdis by. first, its less atten- 

 uato t)raiH-hps; second, its slight!}' hirifcr caliccs; third, the iiiucli more elevated 

 suhciiliculiir pupilhi'. It ocours associuted with M. tinnticauJix. 



The specimens of ^1/i verrucosa, with tlic more elongate processes, approaches 

 Jif. hernardi very dosel}'. 



4a. MONTIPORA BERNARDI var. SUBGLABRA, new variety. 

 Plate I-X, figs. .5, ha. 



This variety is based on a single specimen, broken at both ends. It is 7S> mm. 

 long; groiiter diameter of lower end. 6. .5 mm., lesser, t! mm.; above the lower end in 

 places the greater is 7 mm.; diameter just below the bifurcating upper end, .5. .5 mm. 

 On one side of the specimen the papilhv are suppressed, on the other they are irreg- 

 ularly developed. 



Loraliti/. — Northeast coast of Hawaii Island, Station -lOo-l; depth, 26-60 fathoms; 

 bottom, coarse coral sand, corallines; 1 specimen. 



Type.—CaX. -No. 20S1H. U.S.N.:M. 



Remarks. — This specimen ,stands almost between the specimens that I have 

 divided into two species and named 31. temdcaulis and M. hernardt, respectively. 

 The papilhv on the side on which they are well developed are distinctlv like those of 

 the latter, and the branch, althougii somewhat more slender than tlios(> of tliat species, 

 still corresponds more closely to it than to the former. It may be tliat what I am 

 here considering two species, are in realit\- only variations of one; but as the speci- 

 mens obtained at one station differ considerably, tlu^ types of both coming from the 

 same station, it seems likely that these differences may ])rove constant. 



5. MONTIPORA FLABELLATA Studer. 

 Plate LII, fig. 2; Plate LXI, tigs. 1, In. 1/,. 

 1901. Mont iporn Jiabellata Stvveh, Zocil. .Tahrb., Syst., XIV, p. -IIS, pi. x.x.xi, fig. 15. 



The original description of this .species by .Studer is as follows: 



The colony luiilds a horizontally expanded, nearly .semicircular lamina, which is attached by one 

 side and mea.sure.s 70 mm. in widtli along the attached surface, its greatest width is 8:5 i.im.. and it 

 rises 46 mm. perpemliiular to the ha-se. The thickness on the edge is 5 mm., toward the base as much 

 as 10 mm. 



Only a small portion of the underside is covered with epitheca, the greater portion is naked. The 

 ctenenchymaof this side is reticulate ami is beset with fine, prominent spinules. The calices are sunken 

 and measure 0.4 to 0..t mm. in diameter, and each contains only six septa. 



The upper surface is uneven, showing wavy elevations which ra<liate from the middle p. ■rtion of the 

 attached side and extend to the edge. The calices are small, O.ti to O.S nun. in diameter. There are 

 two cyles of sejita, the first six project deeper into the calicular cavity. The loosely reticulat« 

 ctenenchyma is elevate<l betwi'cn the crowded calices into papillM- as much a.s 1 mm. tall. Usually 

 each papilla projects over the inner margin of a calice in such a manner that its outer edge falls 

 abruptly into the calicular cavity. The whole cci'nenchyina is covered with tine brandling spinules. 



Lavsan. 



