New or Little-known Victorian Fossils. 71 



pointed. Brachial valve nearly flat, slightly concave at the 

 anterior margin. Cardinal process rather prominent. Adductor 

 impressions small and faint. Hinge line with indications of 

 denticulae near the umbo. Surface of shell with prominent and. 

 numerous radii, fasciculate near the umbo, stronger and bifur- 

 cating near the anterior margin; .5 mm. apart in the median 

 area of shell. Between the radii of the umbonal half of the shell 

 there are closely set concentric wrinkles or undulations. Shell 

 structure coarsely punctate. Ventral valve not seen. 



Measurements. 

 Length - - - - 20 mm. 



Width - - - - 28 „ 



Affinities. — This species agrees in the details of the surface 

 ornament with Stropheodonta (Brachyprion) varistriata, Conrad^ 

 from the Lower Helderberg Group, New York ; but with regard 

 to the relative shape of the shell all the specimens of the latter 

 species which have been figured appear to be much longer than 

 our specimen in proportion to the width. The posterior ad- 

 ductor impressions in our specimen also differ from those of S. 

 varistriata, being much shorter and broader. The limited 

 extent of the denticulated area of this fo.ssil shows its relation- 

 ship with the earlier or Silurian types of Stropheodontae for which 

 Professor Shaler proposed the generic or sub-generic term Brachy- 

 prion'-. 



Occurrence. — North of Lilydale. Presented by Rev. A. W. 

 Cresswell, M.A. [660]. 



Horizon. — Silurian (Yeringian). 



Genus Strophoneila, J. Hall. 



Stpophonella euglyphoides, sp. nov. (Plate XL, Figs. 3-6). 



Specific characters. — Shell semicircular in outline. Ventral 

 valve concave, slightly convex at the umbo. Dorsal valve flat 

 or slightly hollowed at the umbonal region, and sharply bent 

 back anteriorly. Cardinal extremities produced and pointed, 



1 See Hall and Clarke, 1892, Palaeoiitolo(fy of New York Palaeozoic Brachiopoda, pt. i., 

 pi. xiii., figs. 6-16. 



2 Bull. Mus. Comp. Zool., 1865, vol. i., p. 63. 



