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 175At. 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/Li. 



Intestine of Ceratophyllus fasciatus Bosc, larva. 



Taken at Cambridge, England. 



LIST OF SPECIES FOUND IN THE SUBPHYLUM TUNICATA 



Parasite 

 [? Kolliker] 

 [? Ritter] 

 [? Frenzel] 

 [? Roboz] 

 [? Bargoni] 



1848 Gregarina phallusiae 



1848 Stylorhynchus Phallusiae 



1851 Gregarina Phallusiae 



1859 Gregarina Phallusiae 



1863 Gregarina Phallusiae 



1899 Pleurozyga phallusiae 



1903 Pleurozyga phallusiae 



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



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



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. i 



Intestine of Phallusiae mamillaris Ecker. ' 



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



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



