80 ILLINOIS BIOLOGICAL MONOGRAPHS [80 



Genus of Uncertain Position 

 AGRIPPINA Strickland 1912: 108 



Sporonts solitary, epimerite a circular disc armed with digitiform 

 processes on periphery, a short neck. Spores ellipsoidal. 



AGRIPPINA BONA Strickland 1912: 108 Type species 

 [Figures 101,102, and 103] 



1912 Agrippina bona Strickland 1912: 108 



Sporonts elongate conoidal, average length 175jli. Nucleus ellipsoidal 

 Protomerite dome-shaped, deutomerite tapering to a long pointed extremity 

 from the shoulder. Epimerite as in genus. 



Cysts spherical, dehiscing by rupture. Spores smooth, ellipsoidal, 

 6.6 by 7/t. 



Intestine of Ceratophyllus fasciatus Bosc, larva. 



Taken at Cambridge, England. 



LIST OF SPECIES FOUND IN THE SUBPHYLUM TUNICATA 



The figure given by Kolliker indicates the presence of a septum. Animal 

 solitary, length 30 to 40/i. Ratio LP:TL: :1:4.5. WP:WD: :1:1. Proto- 

 merite dome-shaped, constricted at septum. Deutomerite cylindrical, 

 tapering slightly and ending in a broad, rounded extremity. Nucleus 

 spherical. Epimerite a short bulbous style. 



Cyst and spores unknown. 



Taken at Triest. 



Intestine of Phallusiae mamUlaris Ecker. 



The position of the gregarines in Tunicates is still uncertain. Little 

 work has been done on them for thirty years and they ofiFer an interesting 



