294 ME. E. A. SMITH Olf THE 



Grenus Phtsopsis. 



100. Phtsopsis Jfkesii, S. Adams. 



Physopsis Jukesii, H. Adams, Proc. Zool. Soc. 1861, p. 144 ; Sowerby, 



I. c. fig. 71 a-b- 

 Sah. Port Essington, N. j^.ustralia (Jukes). 

 Sowerby incorrectly quotes A. Adams as the author of this 

 interesting species. 



Grenus Planoebis. 



101. Plai^oebis Gilbeeti, Bunker. (Plate VI. figs. 30-32.) 

 Planorbis Gilberti, Bunker, Proc. Zool. Soc. 1848, p. 40 ; Sowerby, Con. 



Icon. fig. 37 a-b. 



Sah. East Australia (Iftis. Cuming) ; Brisbane, Queensland 

 (Petferd). 



Dunker describes this species as having the whorls obtusely 

 angular both on the iipper and under sides. This] feature is 

 decidedly more conspicuous in the latter place. He also states 

 that the acute keel is situated below the middle of the whorls ; 

 but on very careful examination of the three typical specimens in 

 the Cumingian collection, I can affirm with certainty that it is 

 central upon the upper whorls, and becomes a little subcentral 

 upon the last, especially towards the aperture. All three speci- 

 mens exhibit, to a small extent, fine, but not close, spiral striae. 

 The whorls are S^ in number, whereof the first two are sunken 

 above, the last and the penultimate being almost on the same 

 level. 



102. Planoebis eeagilts, Brazier. (Plate VII. figs. 1-3.) 

 This species is more compressed than P. Gilberti and more 



acutely keeled. Eeing flatter, the lower surface is less sunken in 

 the middle. 



JBCah. Ipswich, Queensland (Brazier). 



The above name I have seen attached to specimens of this spe- 

 cies sent by Mr. C, E. Beddome, of Hobart Town, to Mr. J. Taylor, 

 of Leeds ; but as yet I have not seen the published description 

 of such a species. This form is spirally striated, in which respect 

 it differs from P. essingtonensis and P. macguariensis, than either 

 of which species it is more sharply carinated. 



103. Plakoebis essingtoneksts, n. sp. (Plate VI. figs. 33- 

 35.) 



Shell white, discoid, compressed, striated by lines of growth. 



