Victorian Fossils, Part XIX. 79 



contrasted with the more rugose character of those in T. pJmre- 

 troides. 



Occurrence. — Sihirian (Yeringian). In ochreous mudstone, 

 Loyola, near Mansfield. Collected and presented by Mr. G. Sweet, 

 F.G.S. 



Fani. BUCANIIDAE. 



Genus Trematonotus, J. Hall, 



Trematonotus i)ritchardi, Cresswell. 



Tremanotus pritcliardi, Cresswell, 1893. Pro. Roy. Soc. Victoria, 

 vol. V. (N.S.), p. 42, pi. VIII., fig. 1. 



Trematonotus pritchardi, Cresswell, Chapman, 1913. Rep. Austr. 

 Assoc. Adv. Sci., vol XIV., p. 227. 



Observations. — This species shows some marked resemblances to 

 the Gotland form, T. lo/iffifudinalis, Lindstrom.l The Victorian 

 species has a more regularly planorbid spiral shell, Avhich is not 

 anteriorly elongated as in T. longitudinalis. The interior of the 

 aperture is almost smooth in T . pritchardi , whilst the longitudinal 

 spiral lines are undulose, producing with tlie concentric lines of 

 growth a decided fenestration. A medium-sized example from the 

 Thomson River, Gippsland, lias the perforations in the slit-band 

 rather larger than in the Lilydale specimens, and the spiral lines 

 are decidedly more flexuous. 



Occurrence. — Silurian (Yeringian). In limestone, Cave Hill, 

 Lilydale. Collected by the Rev. A. W. Cresswell, M.A. Thomson 

 River, Gippsland, 3^ miles N.W. of Mt. Lookout; presented by 

 Mr. G. T. Lovat. 



Fam. Bellerophontidae. 

 Genu.s Bellerophon, Montfort. 



Bellerophon Jasciattis, Lindstrom. (Plate II., Fig. 6 ; Plate VI., 

 Fig. 52). 



Belleropho7i fasciatus, Lindstrom, 1884. Kongl. Svenska Vet.- 

 Akad. Handl., Bd. XIX., No. 6, p. 75, pi. VI., figs. 13, 14. 



Observations. — The Victorian specimen agrees Avith Lindstrom's 

 form in having a compressed shell which is hardly umbilicate, and 

 an inconspicuous and blunt keel ; the growth lines are gently 

 sinuous. 



1 Kongl. Svenska Vet.-Akad. Handl. Bd. xix., No. 6, 1884. p. 86, pi. iii., figs. 39, 40 ; pi. iv., 

 figs. 1-7. 



