400 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxviii. 



Ti/jje Kpecles. — MyriophyUia hadlotlca Volz, Palseontographica, 

 XLITI, p. 75, pi. IX, tij>-. 9, text fio-s., pp. 74, 75.« 



Volz places liv(^ species \\\ Nyr/opliyllla., namely: Myri<>i)]iyllla 

 l>(i«n()t!c(i\oVA, new speci(\s, (/m/fhitloj^hylUa </ra<uli'< Laube ( = ^A r/?Yi- 

 c!Ui^-\r (K cydoHtlforiiu.s Laiibe), j\hji'i()]>]iyi!i.a in'mb^ferl^ new species, 

 Monti iiiaUia dlchotoma Klipstein and 3[yr!(>p/iyll!(( mojsvarl^ new 

 species, without designatinf^- a type species. 



DlKtrihiitlon. — Trias, Schichten von St. Cassian, South Tyrol. 



RciiHirkK. — According to Volz,-' the OmpJudojiJiylUa of Laubc con- 

 tained two genera, both ^'ery closely related, but distinguishable 

 thi'ough ditterences in their columella'. Some of the species origi- 

 nally placed in <>ni)>haJoi>]iyUia by Laube possess a compact columella; 

 these Volz retains in (hnj>hal(>phylli<i. Others possess a spongy and 

 often very scant (.sv ///■ spat'licJi eiitinlckeJf) columella; for these he pro- 

 posed the name 2fyi'/(p/iyfli<i. 



Volz does not describe the wall under the generic diagnosis, nor 

 does he make any lemarks on the epitheca. Under the description of 

 the type species 3L. hnJiofica^ however, he says: '"The wall is very 

 thin, not thickened ))y stereoplasmic deposit. Externally it appears 

 solid. It is beset with coarse, often strong!}' projecting collarlike 

 processes, between which are fine wrinkles. The septa are visible 

 externally as longitudinal i'i)>s.'' Therefore, apparently the wall is 

 im})erforate, and there is no epitheca. 



Genus OMPH ALOPHYLLI A Laube. 



lSfi5. Onrphdlophy/liaA^AVBE, Deiikschr. Akad. WinHensch. Wien, Mat. Natnrliist. 

 CI., XXIV, p. 251. 



Ot'hj'nud (jenerie (lhi<iiu>s)><: " Corallum simple, attached; epitheca 

 strong; columella prominent, styliform; septa numerous, slightly 

 unecjual, dichotomoiis, curved, granulated, serrate; calice, subplane." 

 (Translation of Latin diagnosis.) 



''(\)rallum simple, attached, sometimes pedicellate; the columella 

 distinctly developed, styliform, forming a biittoidike projection in 

 the l)ottom of the calice. Septa numerous, slightly arched, serrate 

 on the sides, gramdate on the upper margin [.s/c, auf den Seiten 

 gesiigt, auf dem obern Kande gekorntlj,' straight or curved, anastom- 

 ing and radiating dichotomously or trichotomouslv from the calicular 

 fossa. Epitheca strongly developed, alwa3"s present, reaching to the 



"This is the same as the Moutliralfut? new species Loretz, Zeitschr. deutsch. geolog. 

 (iesellsch. 1875, p. 825, pi. xxii, tig. 9; tlie label of the original specimen hearing, 

 according to Volz, the name MoiiUira/tia Ixidiotica Loretz. Ajjparently Loretz never 

 published the name, therefore the spe(;ies must he credited to Volz. 



'' Pala'ontographica, XI^IIl, p. H'A. 



"I think Lauhe must have meant <nif licm oherti Raiidc t/rsib/t, uuf den Seite)i 

 gekornt, i. e., ))>« a printer's error the words " Seilni^' and '^ Randc" have been 

 transposed. 



