52 RECORDS OF THE AUSTRALIAN MUSEUM. 



OCCASIONAL NOTES. 



I.— APERTURE OP CONULARIA. 



In 1S73 I called attention^ to the infection of the distal end of 

 the shell in Conularia, whereby the four faces of the pyramid are 

 uniformly inflected and bent down, but do not meet in the centre 

 of the truncated end. A quadrangular opening is then left, with 

 the four corners forming re-entering grooves, which join the angles 

 formed by the union of the conical sides of the shell. 



In a collection of fossils recently acquired by the Trustees is a 

 small example of C. Icevigata, Morris, from the Lower Marine Series 

 of Ravenstield, New South Wales, in which there is an indication 

 of a similar inturning of the distal margins, but not as perfectly 

 preserved as in the Scotch fossil just referred to. 



Another instance is figured by Mr. R. M. Johnston. A very 

 fine Conularia is termed by him C. tasmanica,- from the Bridge- 

 water Limestones of the Lower Marine Series of the Tasmanian 

 Permo-CarV)oniferores, in which the terminal sides are also to some 

 extent inturned. 



A further exemplification of this distal inturning is shown in a 

 specimen of C. undidata, Conrad, from the Conularici-heds of 

 Bolivia, by Dr. A. Ulrich." In this case there is an absence of 

 the bilateral symmetry observed in the distal end of the Scotch and 

 New South Wales examples. Three of the inturned faces meet at 

 the centre, but the fourth not so. The two faces of the longer 

 diameter of the shell are equal, but those of the shorter diameter 

 are not equal to the former, nor to one another. 



R. ETHERIDGE, Junr. 



1 Etheridge— Geol. Mag., 1873, x., (1). p. 295. 



2 Johnston— Syst. Ace. Geol. Tas., 1888, pi. xx., fig. 1. 



3 Ulrich— Steinnmann's Beitriige Geol. Tal. Siiclamerika, 1892, i , p. 32, 

 pi. iii., iig. 6a, 06. 



