18 
LopnoniYLLUM corniculum, De Koninclc ? 
Plate X, Pigs. 7-9. 
Lojihoph yllum COrniculuM, Dc Koniuck, Poss. Pal. Xouv. G-alles du Sud, Pt. 3, 1877, p. 
148, t. 5, f. 0, a and h. 
Sp. Char. — Coralluni of medium size, eonieal, slightly curved, with 
fine-growth swellings ; section circular ; base pointed. Calico deep, with 
erect margins. Septa thirty-four to thirty-six, alternating wdth an equal 
nuniher of secondary lamella) ; primary septa gently bent on themselves 
dorsally, straight ventrally, converging inwards towards, hut not reaching 
the spurious columella ; cardinal septum lamellar along its outer two-thirds, 
enlarging at its inner extremity in the centre of the calice, into a more or 
less lanceolate body ; below the floor the dorsal, central, and probably ventral 
septa meet the thickened end referred to, and unite Avith it to assist in form- 
ing the so-called columella ; counter and alar septa not diferentiated ; 
fossula dorsal, A'cry large and deep ; dissepiments scanty and irregular, 
forming one or two cycles close to the jAcriphery ; vesicles irregular ; loculi 
othcrAA’ise open and deep. Epithica thin Avith fine accretion marks, and 
delicately concentrically lined ; rugae fine, corresjionding to the interseptal 
loculi. 
Ohs. — The specimens referred to this species depart from Ee 
Koninck’s description in the position of the fossula, AA’hich is certainly 
dorsal, or on the side of the greatest curvature of the corallum, and not 
lateral, or variable. The remaining eharacters, however, are identical. 
Ec Koninck stated that in the corals examined by him the position of the 
fossula did not corresj)ond to either of the curvatures of the corallum, 
hut Avas situated sometimes to the right, at others to the left. In Loplio- 
2)hyUum the position of the fossula is generally described* by authors as 
ventral, hut in their original definition of the genus, EdAvards and Ilaime 
do not lay down any special rule, and it may therefore A^ary in position 
generically, just as much as in Zaphrentis. 
The position now" assigned by Avriters to Lophophyllum is fully borne 
out by the structure of the Australian speeimens. It aaus sIioavii by Kuntld 
that the sup})osed columella is only the enlarged inner end of one of the 
principal septa, usually the counter sej)tum, and not a columella in the true 
' “ Beitriige zur Kenntniss fossiler Korallen,” Zeitscli. Dcutscli. Geol. Gesellschaft, 1869, j). 193. 
