328 ESCHARID^. 



man) : Hastings (Miss Jelly) . No foreign locality has 

 been recorded. 



Range in Time. Older Pliocene^ Castrocaro (Manzoni) : 

 (if I am right in identifying Lepralia chilopora, figured by 

 this author in his Monograph on the Polyzoa of Castro- 

 caro, with the present species). 



This species comes very near to P. concinna. The points 

 of difference betAveen the two may be briefly summed up. 

 P. minuta is very inferior in size to P. concinna ; its cells 

 are more distinct, and divided by deeper sutures, and they 

 are more pointed off below ; they are also arranged more 

 regularly and markedly in radiating lines. At times the 

 rows of cells are rather widely separated, and the inter- 

 vening space is crossed by connecting ridges, which pass 

 at intervals from side to side. 



The ooecium of the present species is less prominent 

 than that of P. concinna. It may be added that in the 

 latter the front of the cell is never mucronate, while 

 within the lower lip there is a broad denticle, of which 

 no trace exists in P. minuta. 



The very close affinity between these two species is not 

 apparent from Norman^s description, as he has overlooked 

 the presence of an avicularium. But there is no doubt 

 that they are most intimately allied. 



On one or two marginal zooecia I have detected traces 

 of a pair of spines. 



