ON FOSSIL POLYZOA. 127 



163. Lepralia Borlingtoniensis, Waters (Vincularia forma), ' Quart. 



Jour. Geol. Soc' vol. xxxviii., p. 270, pi. vii. f. 6. Bairnsdale. 



164. Lepralia depressa, Busk, var., ' Quart. Jour. Geol. Soc' vol. 



xxxviii., p. 509. 



165. Lepralia Bairnsdalei, "Waters, ' Quart. Jour. Geol. Soc' vol. 

 xxxviii., p. 509. 



166. Lepralia Gippslandii, Waters, ' Quart. Jour. Geol. Soc' vol. 



xxxviii., p. 509, pi. xxii. f. 12. 

 Ttange. — The whole of the above are fossil species and varieties, 

 described by Mr. Waters as occurring in his 'Australian Miocene' ? Material. 



Genus Umeonula, Hincks (see Brit. M.P. p. 316). 



167. Umbonula verrucosa, Esper (? Gellepora ibid.). 

 Mange. — Scotch Glacial ; Palaeolithic (Bell). Living. 



II. With a raised secondary orifice. 



Genus Porella, Gray. 



' Zooicia with a primary orifice, semicircular ; secondary (or adult) 

 orifice elongate, inversely sub-triangular or hoi'seshoe-shaped, inclosing 

 an avicularium usually with a rounded mandible. Zoarium incrusting or 

 erect ; foliaceous, with a single layer of cells, or ramose' — Hincks, 

 p. 320. 



168. Porella concinna, Busk (Lepralia ibid.) = Lepralia Belli, Dawson 



' Rep. Geo. Surv. Canada.' Porella concinni, Waters, ' Quart. 

 Jour. Geol. Soc' vol. xxxviii., p. 271. 

 Range. — Scotch Glacial ; Palaeolithic ; Post-Pliocene, Canada ; 

 Miocene? Mt. Gambier, Australia (Waters). 



169. Porella minuta, Norman (Lepralia, ibid.) = ? Lepralia cldlopora, 



Manzoni, ' Castrocaro,' 32, pi. iv. f. 51. 

 Range. — Older Pliocene, Castrocaro (Manzoni), ' If I am right in the 

 identification' (Hincks). Living: only a few British localities — Shet- 

 land, Hastings (Jelly). 



170. Porella emendata, Waters, ' Quart. Jour. Geol. Soc' vol. xxxvii., 

 p. 336, pi. xvii. fig. 69. 



171. Porella denticdlata, Stol. (Waters), ' Quart. Jour. Geol. Soc' 

 vol. xxxvii., p. 936, pi. xvii. fig. 7Q=Flustrella ibid. (Stol.), 

 ' Foss. Bry. Orak.' p. 183, pi. xx. fig. 2. 



172. Porella marsupiuji, MacG. (Waters), op. cit. vol. xxxix.,p. 437= 



Lepralia ibid., MacG. ' Trans. Roy. Soc. Vict.' 1868. 

 Range. — Miocene, Australia (Waters) ; MacGillivray. 



Genus Escharoides, Smitt. 

 No fossil record. See Hincks, ' Brit. M. Pol.' p. 336. 



Genus Smittia, Hincks. 



' Zooicia with the primary orifice suborbicular, the lower margin entire 

 find dentate ; peristome elevated, and forming a secondary orifice, which is 

 channelled in front ; generally an avicularium below the sinus. Zoarium 

 cither incrusting, or erect and foliaceous, the cells in a single or double 

 layer.' — Hincks, p. 340. 



