PER AG ALLOA. 



419 



GENUS 87/w.-PERAGALLOA SCHUTT, 1895. 



Frustules formed of 

 numerous annulate joints, 

 interrupted, with orbicular 

 valves furnished with two 

 long horns, more or less 

 spinous or hirsute. 



This curious genus, which 

 approaches Aitheya, has the body 

 of a Dac/ytiosokn, and the valves 

 of a Chtetoca-os. It only com- 

 prises a single species. 



Fig. 137- 



Peramlloa Meridiana. 



Peragalloa meridiana Schutt (Ber. Deutsch. Bot. Geseii. 



1895, xiii., p. 36, pi. 5, f. 28*). 

 Found pelagic in the Baltic Sea (Schutt). 



