360 GEOLOGY AXD PETROLOGY 01' THE GREAT SERPENTINE' BELT OF N.S.W.. 



MURCinSONIA SP. INDET. 



Forms referable to this genus were obtained by Mr. Pittnian from near 

 Carroll.* 



Bellerophon spp. indet. (Text -fig. 17.) 

 Out of several specimens of Bellerophon collected by Mrs. Scott, east of 

 Babbiuboon, two types only apjicar to be represented. Both are so poorly pre- 

 ser\'ed as to be incapable of specific determination. The larger is In'oad and oval, 

 the mouth broadly crescentic. The umbilicus (to the right of Text-%. 17a) is 

 ■wide and shallow. The upper edge of the lip is thickened, and there seems to be 

 no umbilicus. There is only the faintest indication of a slit -band, and no sign 

 of ornamentation. The height is 13 mm. and greatest diameter '23. The heiglit 

 of the aperture is 18 mm., and breadth 10. 



This form is evidently closely related to B. Iihilciis (Martin) t (Cf. Sowerby, 

 Min. Conch., t. 470, f. 1). 



The second form, Text-iig. 17b, is narrower and markedly carinate. The 

 fragment of the lip preserved indicates that it had a widely spreading mouth. 

 This form is probably more allied to B. costaluf:, though it is apparently rather 

 narrower than the typical form of that species. {See Sowerby. op. cit., t. 470, 

 f. 4.) The specimen is an internal cast only, and no sign of ridu-insr or tither ex- 

 ternal ornamentation is to lie found. 



Euomphalus carrollensls, sp. nov. (Plate xxii., tig. ii. ) 

 The shell is sub-turbinate to sub-conical, consisting of five to six whorls of 

 which all but the body whorl are sub-circular in cross section, while the latter has 

 a broad flattened upper surface, and is entirely of the pentaiuiulatu.t type. The 

 ornamentation of the shell consists of numerous gi'owth lines of the nornud 

 Euomplialid type. Dimensions: Height of spire. 15 mm.; breadth. 33; height 

 of body whorl, 9; spire angle, 120°. 



The specimen was obtained at rari-cill. and is Specimen No. '2771 in the col- 

 lection of the Geological Survey. 



Euomphalus cer.\ (Eth. fil.). 

 R. Etheridge, Jun., Kec. Geol. Surv. N.S.W., vi.. 189G. p. 17, t. 1, f. 5. (i. 

 The specimens examined from the south-east of Baljbiubood (which were 

 obtained by Mrs. Seort) resemble in all respects the illustrations of Euomphalus 

 cera given by Etheridge, save that tlicy are smaller than the illustration. As no 

 dimensions or statement of the nuiltiplication involved in illustrating are men- 

 tioned, the following are g-iven as tlie dimensions in millimetres of several forms 

 examined : — 



Height of shell 4 5 — 



Diameter 1<5 20 '24 



Height of aperture 4 5 6 



Breadth S 7 8 



Euomphalus PEXTANGUi.ATf^ (Sowerl)y). 

 J. Souerbv, l\Iin. Conch. Grt. Brit., 1814, j.. it7, t. 4.5, f. 1 and 2; K. Etheridge, 

 Junr.. Rec. Geol. Surv. N.S.W., ™i.. pt. 3, 1907, p. 19(i, t. 38. f. 1. 

 The specimen closely resembles that from Moonan Brook, desciibed and 

 figured by Etheridge. Its dimensions are: Height (d' sliell, 9 mm.; hreadtii of 

 shell, 29; height of aperture, 7; breadth of aperture, 10. 



" • Annual Kept. Dept. Mines^ N.S.W., 1897, p.aOO. 



tPetref. Derbiensis, 1809, t. 40, f. 4. 



