I r,ii Freeh' rick Chapman: 



Horizon end Occurrence. — .Silurian (Yeringian), Ruddock's 

 Quarry, near Lilydale. Holotype presented by Mr. J. S. Green, 



after whom the species is named. Also several other fragmentary 

 specimens from the same locality, in the Museum collection. 



Goldius cressivelli, sp. nov. (Plate XIV., Fig 3 ; Plate XVI., 

 Fig. 17). 



Description of pi/gidium. — Comparatively short, one-third 

 broader than long. Surface gently convex below the pygidial axis 

 and falling away to a plane surface round the circumference. 

 Pygidial axis prominent, surface covered with distinct, rounded 

 granules, rather closely set, and extending over the whole of the 

 flabellate portion. Pygidial fused segments six on each side of the 

 median ray, which is simple except for a short bifurcation close to 

 the margin. Pygidial segments fairly conspicuous around the axis, 

 flatly rounded; slightly sinuous and concave towards the median 

 axis; divided by a very narrow groove, which disappears near the 

 outer margin of the pygidium. 



Dimensions. — Width of pygidium, IT mm.; length, 11 mm. 

 Length of pygidial axis, circ. 3.5 mm. 



Observations. — Although the above species is founded on a 

 pygidium, the characters of this portion of the carapace are so well 

 denned as to afford a good basis for its specific identification; 

 moreover, the pygidial characters are especially distinct in this 

 genus. 



There is already one described species of the genus which bears a 

 striking resemblance to the present form, namely,- Goldius ed- 

 wardsi, Barrande sp. 1 ; found in the Silurian of Bohemia in Etage 

 Ee2, the upper led of the Silurian in the present interpretation 

 of that system, and which practically agrees with the Yeringian 

 series of the Victorian Silurian. G. edwardsi, although agreeing 

 will, ','. cresswelh in form, general style of ornament, and non- 

 bifurcation of the median axial rib, has more convexly rounded ribs 

 anterior region; the median axis is more swollen; and the 

 granulal ions are coarser. 



Horizon and Occurrence. — Silurian (Yeringian). Cooper's Creek, 

 Gippsland. Presented by the late Per. A. W. Cresswell, M.A., after 

 whom lb.' species is named, in recognition of bis valued collecting 

 in the Silurian of this Slate. 



i t;,..,)inii; tdwardsi, Barrande, Syst. sil. Boheme, vol. i., 1852, i>. 882, pi. xlii., figs. 30-33. 



