Little-Ktiown Victorian Fossils. 337 



The species described here from the Melbournian series are : — 

 Coleolus (1) aciculuiu, J. Hall. 

 Hyolithes novellus, Barrande. 



,, spryi, sp. nov. 



Conularia ornatissima, sp. nov. 

 From the Yeringian series — • 



Conularia sowerbii, Defr. 

 From beds probably higher in the series than tlie preceding — 

 Styliola fissurella, J. Hall, var. multistriata, var. nov. 

 Tentaculites matlockiensis, sp. nov. 

 On examining the above list, but excluding the Styli(jla and 

 Tentaculites, which occur on a higher horizon, one is struck 

 with the mixed character of the Silurian fauna in and around the 

 Melbourne area. 



Two of the species recorded, viz., Hyolithes novellus and 

 Coleolus (?) aciculum are found elsewhere — in Bohemia and 

 North America — in Devonian strata. Another is closely related 

 to an Upper Ordovician form, whilst one species cannot 1)6 

 separated from the well-known Conularia sowerbii, wliich ranges 

 from the top of the Ordovician (Bala beds) to the Ludlow series 

 in Britain. 



Genus StylJola, Lesueur. 



Styliola fisSUI^ella, J. Hall, var. multistriata, var. nov. 

 (Plate XXXI., Figs. 4-G). 



Description. — The shell is in the form of a slendei-, tapering 

 cone, with a minute l)ulb at the apical end. The Victorian 

 specimens cannot lie separated specifically from Hall's S. 

 fissurella,' but differ from it in a vai-ietal manner, l)y having the 

 surface marked with veiy fine and regulai- transverse lines of 

 growth. The Victorian specimens average about 2.5 mm. in 

 length. The American specimens are very variable as to orna- 

 ment, but they do not show so constant a character in the 

 lineation of the shell as do our specimens. 



The shells as they occur in the shale are somewhat flattened, 

 but, from the fact of their being so minute, they liave sometimes 



1 Tentaculites fissurella, .1. Hall. Guol. N.V. Suiv., Fourth Geol. Distr., 1843, p. 180, 

 fit,'S. 9 and 10 ; p. 222, fif,'- 4. 



Styliola fissurella. Hall. I'al. N.Y., vol. v., pt. ii., 1870, p. 17f<, pi. xxxi.\., fifjs. 1-30. 



