358 GEOLOGY AXD PETROLOGY OF THE GREAT SERPEXTIXE BELT OF X.S.W., 



tion. The slit band is placed nearer to the suture than to the greatest periphery 

 of the shell, but is not presei-\ed in our specimens, a little patch of obliquely 

 striated test from below the slit band serving to indicate its position. 



The following are the dimensions of two specimens : Height of spire, 9, 9mm. ; 

 diameter of base, 17, 21; height of aperture, 9. 9; breadth of aperture, 9, 10; 

 angle of spire, 115°. 



This variety differs from the type of the species in the greater height of the 

 spire proportionately to that of the body wliorl. These forms were collected by 

 Mrs. Scott from the south-east of Babbinboon, and are Nos. n2455 in the collec- 

 tion of the Geological Survey. 



GosSELETiXA MACKAYi, sp. nov. (Plate xxii., fig. 2.) 



The spire consists of four or five whorls, the first three being discoid, but 

 the body whorl is depressed so that the top of the aperture rests against the 

 middle line of the previously-formed whorl. The whorls are turreted. with a 

 sharp angle placed half-way between the suture ;ind the periphery and marked by 

 low tubercles. The slit -band is half way between this angle and the suture. 

 The aperture cannot be seen. 



The dimensions are: Height of spire, about 16 mm.; diameter of base, 32; 

 height of body whorl. 11. 



The specimen is a cast obtained by Mrs. Scott from the shelly ridge in the 

 soutb-east of Babbinboon, and named after her parents in appreciation of their 

 hospitality and helpfulness. The type is specimen No. F 12456 in ths collection 

 of the Geological Survey. 



GossELETixA .scoTTi, sp . nov. (Plate xxii.. figs. 3, 4.) 

 Shell composed of four or five whorls, the cross section of which is very 

 characteristic. The suture is rather deeply marked, and the slit-band lies at a 

 sharp angle close to the suture line, less than a quarter of the distance from the 

 margin to the periphery, and beneath it is another but much fainter ridge. The 

 margin is rounded and subangular. Tliere is a small umbilicus. 



Dimensions: Height, 8 mm.; breadth of base, 20; height of aperture, 8; 

 breadth of aperture, 9; angle of spire. 135°. 



This form differs from G. aiu^tnilis in its greater size, and the position and 

 angular character ef the slit band. It was obtained by Mrs. Scott from the 

 shelly ridge in the south-east of Babbinboon. The type is specimen No. F 12458 

 in tiie collection of the Geological Survey. 



YVAXIA KOXIXCKIl Elh til. 



Baylea komiickii, Etheridge, Junr., Rec. Geol. Surv. N.S.AV.. ii.. 1890. p. 82; 



Yranin koninckil, ihid, Geo]. Pal. (^Id. and N. Guinea. 1892. p. 288, t. 



41, f. 7; ibid., Rec. Geol. Surv. N.S.W.. viii.. 1907. p. 192. t. 38. f. 2, 3. 

 This form is represented in our region by S|iecimen 1804 in the collection of 

 the Geolosrical Survey, obtained from Carroll by Donald Porter. 



PORCKLLIA PEARSi Etli. fil. (Plate xxii., fig. 7.) 

 R. Etheridge, Junr., Geol. Pal. Q'sland and N. Guinea. 1892. p. 290. t. 15. f. 7,8. 

 This form' is represented by Specimen 437(i in the collection of the Geo- 

 logical Survey, and -was obtained by Cullen from the parish of Moorowarra. It 

 consists of a cast of the base of a single shell. It contains about four or five 



