Folliculinids of Ago Bay, Japan — Matthews 
13 0 p 
Fig. 11. Metafolliculina andrewsi. Lateral view 
of left side showing: a, peristomal lobe; b, collar; c, 
spiral whorl; d, neck; e, moniliform nucleus; f, sac of 
lorica; g, foot. 
these had 4 M. limnoriae in a single row on the 
dorsal left side of the head with neck openings 
( b ) pointing toward the mid-line and another 
had 2 M. limnoriae on the dorsal, right side of 
the head, with neck openings also pointing 
toward the mid-line. On still another, M. 
limnoriae was present on the dorsal, posterior 
margin of the head as well as on the dorsal 
surface of the pleotelson, and on 13 M. 
1 limnoriae was attached only to the dorsal surface 
243 
200 jj 
Fig. 12. Mirofolliculina limnoriae. Ventral view 
of extended animal showing: a, peristomal lobe; b, 
collarless neck; c, neck; d, lateral pouch of lorica; 
e, moniliform nucleus; f, non-spatulate foot. 
of the pleotelson, but here again, their arrange- 
ment was random, affording only slight feeding 
advantage when the peristomal lobes (<#) were 
extended above the short neck (c). 4 Thus, the 
commonly held notion that the larval swimmer 
"selects” a site advantageous for the subsequent 
4 This applies also to thousands of M. limnoriae ex- 
amined from Hawaii. 
