AUG 2 18S8 



NEW OR LITTLE-KNOWN LOWER PALEOZOIC 



GASTEROPODA in the COLLECTION of the 



AUSTRALIAN MUSEUM. 



By R. Etheridge, Junr., Curator. 

 (Plates XV., and xvi.) 



The following Lower Palaeozoic fossils are either new to Australian 

 Palaeontology, or have been imperfectly described. 



Genus Goniostropha, (Ehlert, 1888. 



(Bull. Soc. Etudes Sci. Angers for 1887 (1888).) 



Goniostropha pritchardi, sj). nov. 



PI. XV., Figs. 1 - 4. 



Sp. char. — -Shell small, elongately spiral, of seven or eight slowly 

 increasing angular whorls, each bearing two sharp median keels, 

 enclosing between them a smooth, slightly concave band, and the 

 remaining surface of each whorl occupied by a series of fine spiral 

 lyrte that are sometimes finer above than below the band ; sutures 

 deep ; mouth with the outer lip apparently rounded, and the 

 inner lip reflected. Length (of largest specimen) one and a 

 quarter inches. 



Obs. — None of the mouths in the specimens before me are 

 perfect, but the outer lip seems to have been rounded in outline, 

 and the inner lip is certainly reflected. The whorls are only 

 rendered angular by the projecting principal keels, enclosing 

 between them the band, and they become less median in j^osition 

 as the apex is approached. This form belongs to a group of rather 

 common 3hirchisonia-\ike shells for which Dr. Daniel (Ehlert has 

 proposed the name Goniostropha, distinguished by more or less 

 angular whorls, the band occupying the angle or greatest periphery 

 of each whorl, accompanied by supplementary finer revolving 

 lyrae. In this respect it differs from an allied genus, Hypergonia, 

 Donald.* 



As this is an undescribed species from the Lilydale Limestone 

 of Victoria, I have much pleasure in associating with it the name 



* Quart. Journ. Geol. Soc, 1889, xlv., p. 623. 



