Antilloseris angulata 
The costae are close, unequal, transversely granular, 
and those at the end of the long axis of the e a lice are the 
most prominent and broadest. Inferiorly synaptieulae exist. 
Epitheoa rudimentary. 
Height of co rail urn 13 mm* Length of calice 33 mm. 
Breadth 23 mm. 
The following measurement s are based on 9 specimens 
belonging to the University of Upsala: 
