369] 



STUDIES ON GREGARINES— WATSON 



159 



STYLOCEPHALUS OBLONG ATUS (Hammerschmidt) Watson 



[Figures 106, 120] 



1838 

 1848 

 1851 

 1875 

 1882 

 1916 



Bhiziniaohlongata 

 Sporadina oblongata 

 Gregarina oblongata 

 Stylorhynchus oblongatus 

 Stylorhynchus ohlongatus 

 Stylocephalus ohlongatus 



Hammerschmidt 



Frantzius 



Diesing 



Schneider 



Schneider 



Watson 



1838 :357 

 1848 :195 

 1851 :14 

 1875 :569 

 1882 :434 

 (This paper) 



Stylocephalus: Sporonts solitary, elongate. IMaximum length 

 3000/x. ; 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 karyo- 

 somes. 



Cysts irregularly spherical with slight depressions and protuber- 

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



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

 (L.) and Asida grisea (F.) Habitat: Intestine. 



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

 rhynchus, Stylocephalus. The species thus becomes Stylocephalus ol- 

 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, 

 given. Ratio length protomerite : total length : : 1 



IMeasurements not 

 10; width protome- 



