GENERA OF SIMPLE FUNGID CORALS— VA UGH AN. 385 



2. Genus PAL^^OSERIS Duncan. 

 1S70. PrtZ,rasf/-(.s Duncan, Quart. Jour. (Jeol. Soc, Lundoii, XXVJ, p. ;U»1. 



Genus referred to the L<>i)hot<.erl)\iv. 



Original generic dkign (>■<<: is. — '■ ' The coralhiin is simple, turbinate, and 

 })edicellate. The septa are numerous. The epitheca is complete and 

 dense, covering the cost^. The cohmiella is rudimentaiy.''"' 



Tyjje species. — 7^? 'oc/wmv/'/.s'v/wo^/.sv' Duncan, Ann. and Mag. Nat. Hist., 

 3d ser., XIV, p. ItJi, ph vi, figs. 2a-L>c, 18(U. Also Quart. Joui-. 

 Geol. Soc., London, XXVI, p. 301, pi. xx, ligs. 7a, 7b. 



Locality and geologic liorlzon. — Tertiary, Mudd}^ Creek, South 

 Australia. 



Re')na7'l's. — Duncan does not describe in detail the structure of the 

 septa or the wall. The original figures of Trochoserls 'inxxlxl indicate 

 that both the septa and the wall are imperforate. Therefore this genus 

 apparentl}' is an epithecate Trochoseris with a reduced columella, 



Duncan, in his Revision of the Families and Genera of the Madre- 

 poraria," makes Pala^oserls a subgeiuis of Turhlnoseris Duncan. 



8. Genus BATHYACTIS Moseley. 



1881. Baihyactis Moseley, Deep Sea Corals, Challenger Reports, p. 185. 



Genus referred to the Lophoserinse. 



Original generic diagnosis. — "Corallum free, discoid, not attached 

 or cup-shaped in the 3'Oung condition, thin and fragile; primary septa 

 free, the others united so as to form six deltoid com])inations; upper 

 margins of the septa usually coalescent over the apices of the deltas. 

 Septa deeply toothed; synapticuhe sometimes abundant, sometimes few, 

 arranged in a series of concentric circles. Columella well developed." 



Type species. — Fungla syimnetrica Pourtales, Mus. Comp, Zool., 111. 

 Cat., No. IV, p. 46, pi. vii, figs. 5, 6; Mosele}^, Deep See Corals, 

 Challenger Reports, p. 185. 



Dlstrlhutlon. — Recent, ahiiost universal in deep water. 



Mosele}^ remarks: "I am not sure whether Fung lacyafhus fragllis 

 of Prof. M. Sars^ will not prove identical with JJaf/iyactis sym- 

 metrica. If so, the name Funglacyatlius will take priority. Fungla- 

 cyatkns frag Ills agrees with Bathyactls symmetrica in all respects 

 excepting that it has no synapticulye. In some of the Challenger 

 specimens there are very few S3'napticul» indeed, but in none are these 

 structures entirely absent. I therefore hesitate to place the two forms 

 together at present. There can be little doubt that the}^ are closely 

 allied, and what little I have seen of the soft parts of Bathyactls syrji- 

 metrica goes to confirm such an opinion." 



«Jour. Linn. Soc. London, Zool., XVII, 1884, p. 148. 



b On some remarkable forms of animal life from the great depths off the Norwegian 

 Coast, I, p. 58, pi. V, figs. 24-32, Christiania, 1872. 



