SCHIZOPORELLA SPINIFERA. '211 



in the littoral region, and on stones, shells, &c., from deep 

 water. 



LOCALITIES. Very widely distributed. 



Form unicornis. Guernsey ; South Devon (one of the 

 commonest littoral species) ; Ilfracombe; Filey (T. H.) : 

 Northumberland and Durham (Alder) : St. Andrews (Dr. 

 M'Intosh): Ayrshire (Landsb.): the Minch (A. M. N.): &c. 



Form ansata. Shetland, 40-170 fathoms, extremely 

 abundant ; the Minch (A. M. N.) : Antrim (Hyndman) : 

 Hastings (Miss Jelly) : Cornwall, 30-40 fms. (T. H.) : &c. 



GEOGRAPHICAL DISTRIBUTION. Form unicornis : Adri- 

 atic (Heller) : Naples (A. W. Waters) : Gibraltar Bay 

 (Landsb.) : France, S.W. (Fischer) : North America 

 (Leidy) : Durban, South Africa* (W. Gates). Form 

 ansata: Greenland ('Valorous' dredgings). Bergen, 

 both forms (A. M. N.) . 



RANGE IN TIME. Form unicornis : Coralline Crag (S. 

 Wood) : Vienna Basin ; Austro- Hungarian Miocene 

 (Reuss) : Italian Pliocene (Manzoni) : Scotch Glacial 

 deposits (Geikie) : Palaeolithic (A. Bell) . Form ansata : 

 Coralline Crag (S. Wood) : Vienna Basin (Reuss) : Ital. 

 Pliocene (Manzoni) : Palaeolithic (A. Bell). 



SCHIZOPORELLA SPINIFERA, Johnston. 

 Plate XXXV. figs. 6-8. 



LEPRALU CILIATA, HOM. Ann. N. H. vi. 171, & rii. 307, pL ix. fig. 2 : Couck, 

 Corn. Faun. iii. 118, pi. mi. fig. 10. 



* The South- African specimens are extremely beautiful. The surface of 

 the zoarium is silvery and lustrous, and of the most remarkably delioato 

 texture ; the wall of the cells is reticulated, the punctures appearing as Tery 

 deep perforations in a thick vitreous crust. The ovioell is more or left* 

 punctured in addition to the usual sculpture, and the cells are very regular 

 in form and arrangement. The specimens show very plainly the influences 

 of climate. 



K 



