369] 



STUDIES ON GREG ARINES— WATSON 



15^ 



STYLOCEPHALUS OBLONGATUS (Hammerschmidt) Watson 

 [Figures 106, 120] 



1838 Rhiziniaoilongata 



1848 Sporadina oblongata 



1851 Gregarina oblongata 



1875 Stylorhynchus oblongatus 



1882 Stylorhynchus ohlongatus 



1916 Stylocephalus ohlongatus 



Hammerschmidt 1838 :357 



Frantzius 1848 :195 



Diesing 1851 :14 



Schneider 1875 :569 



Schneider 1882 :434 



Watson (This paper) 



Stylocephalus: Sporonts solitary, elongate. Maximum length 

 3000/1 ; width not given. Ratio length protomerite : total length : : 1 : 6 

 to 1:8. Ratio width protomerite : width deutomerite : : 1 : 2. Proto- 

 merite globular, constriction at septum. Deutomerite cylindrical, tap- 

 ering slightly from middle, ending in a rather slender blunt posterior ex- 

 tremity. Epimerite a thick cylindrical neck with a terminal dilated por- 

 tion with papilla on extremity. Whole epimerite equal to 1.5 to twice 

 the length of protomerite alone. Endocyte yellow in cephalont, becom- 

 ing black in adult sporont. Nucleus ellipsoidal, with several kary©- 

 somes. 



Cysts irregularly spherical with slight depressions and protuber- 

 ances. Spores brown, united in chains, 7/t in long axis. 



Taken at Paris and Poitiers, France. Hosts: Opatrum sabulosum 

 {li.) sjiA Asida grisea {¥ .) Habitat: Intestine. 



Because the name was preoccupied, Ellis renamed the genus Stylo- 

 rhynchus, Stylocephalus. The species thus becomes Stylocephalus oh- 

 longatus. 



STYLOCEPHALUS LONGICOLLIS (Stein) Watson 



[Figures 107, 121] 



1815 Gregarina sp. 



1848 Stylorhynchus longicollis 



1848 Stylorhynchus longicollis 



1851 Gregarina Mortisagae 



1863 Gregarina longicollis 



1875 Stylorhynchus longicollis 



1882 Stylorhynchus longicollis 



1884 Stylorhynchus longicollis 



1916 Stylocephalus longicollis 



Stylocephalus: Sporonts solitary, elongate. Measurements not 

 given. Ratio length protomerite : total length : : 1 : 10 ; width protome- 



