40 



BRITISH I^EESHWATEE EHIZOPODA. 



and Lancashire {Broion) ; N. and W. Yorksbire ; 

 Derbyshire (Broum) ; Rutlandshire ; Bedfordshire ; 

 Cambridgeshire ; Essex (Scoitrfield) ; Buckingham- 

 shire ; Isle of "Wight ; Devonshire; Cornwall. 



Wales. — Frequent in North Wales. 



Scotland. — Shetlands ; St. Kilda {Brown) ; Outer 

 Hebrides ; Loch Ness, Inverness-shire {Penarcl, 

 Brown) ; Elginshire, Aberdeenshire, Perthshire, and 

 Argyllshire {Broivn) ; Skye, Inner Hebrides ; Isle of 

 May, Bass Rock, and Wigtownshire [Broion). 



Ireland. — Clare Island and mainland. Mayo; Gal way. 



A A 



y 



Fig. 126. — Various types of spines of Euglypha compressa ; tlie last 

 figure a side view, x 1000. 



The spines (fig. 126) vary greatly in length and' 

 shape but are always of a stout form ; they may be 

 slightly flattened, lanceolate, or even spathulate, but 

 are always arranged so that the narrow edges only 

 are seen when viewed from the direction of the fundus 

 of the test. The aperture varies in shape from 

 narrowly to broadly oval. The thickness of the test 

 may vary from one half to five sixths of the breadth, 

 but is usually about one half. 



Tia. 127.- 



-Hexagonal appearance oocasionally seen in tests of Euglypha 

 compressa. x 1000. 



