369] STUDIES ON GREGARINES WATSON 159 



STYLOCEPHALUS OBLONGATUS (Hammerschmidt) Watson 



[Figures 106, 120] 



1838 RhiziniaoUongata Hammersehmidt 1838:357 



1848 Sporadina oblongata Prantzius 1848:195 



1851 Qregarina oblongata Diesing 1851 :14 



1875 Stylorhynchus oUongatus Schneider 1875 :569 



1882 Stylorhynchus dblongatus Schneider 1882 :434 



1916 Stylocephalus oUongatus 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 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 salulosum 

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



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

 rhynchus, Stylocephalus. The species thus becomes Stylocephalus ob- 

 longatus. 



STYLOCEPHALUS LONGICOLLIS (Stein) Watson 

 [Figures 107, 121] 



1815 Gregarina sp. Gaede 1815 :17 



1848 Stylorhynchus longicollis Stein 1848 :222 



1848 Stylorhynchus longicollis Frantzius 1848 :195 



1851 Gregarina Mortisagae Diesing 1851 :12 



1863 Gregarina longicollis Lankester 1863 :95 



1875 Stylorhynchus longicollis Schneider 1875:572 



1882 Stylorhynchus longicollis Schneider 1882:423 



1884 Stylorhynchus longicollis Schneider 1884:1-36 



1916 Stylocephalus longicollis Watson (This paper) 



Stylocephalus: Sporonts solitary, elongate. Measurements not 



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



