34 ILLINOIS BIOLOGICAL MONOGRAPHS [34 



Lger and Duboscq (1911) have described a new species, Cephaloido- 

 phora maculata, from Gammarus marinus which is identical with the aber- 

 rant species referred to above. 



Family GREGARINIDAE Labbe 1899:9 



Epimerite symmetrical, simple. Sporonts solitary or in association. 

 Cysts with or without spore-ducts, spores symmetrical. 



Genus URADIOPHORA Mercier 1912a 



Intestinal parasites. Development extracellular. Epimerite an 

 elongate papilla. Cysts without sporeducts. Spores spherical or sub- 

 spherical, not united in chains, faint equatorial line. End portion of deuto- 

 merite of satellite greatly constricted. Associations of two sporonts. 



URADIOPHORA CUENOTI (Mercier) Mercier Type Species 

 [Figure 63] 



1911 CephaloidophoraCuenoti Mercier 1911: 51 



1911 CephaloidophoraCuenoti Sokolow 1911:286 



1912 Uradiophora Cuenoti Mercier 1912a: xli 

 1912 Uradiophora Cuenoti Mercier 1912b;177 



1912 Uradiophora Cuenoti Tregouboff 1912: Ivi 



1913 Uradiophora Cuenoti Ellis 1913:264 



Characters of the genus. Syzygies of two sporonts, infrequently of 

 three. Sporonts very elongate, cylindrical. Ratio LP : TL : : 1 : 20 

 (primite) 1 : 28 (satellite without appendage). WP:WD ::!:!. 9 to 

 1 :2. Sporonts 70(V in max. length. Nucleus sub-spherical. Epimer- 

 ite an elongate papilla, persistent in sporonts. Deutomerite with small 

 atrophied appendix. Nucleus in adults spherical, with one large karyo- 

 some; chromidial bodies frequently found in both protomerite and deu- 

 tomerite. Cysts ovoidal, 38 to 44/i in diam. Spores 4/i in diam. 



Intestine of Atyaephyra Desmaresti Millet. 



Taken at Nancy, France. 



Genus PYXINOIDES Tregouboff 1912 



Intestinal parasites, extracellular in development. Epimerite a short 

 stype dilated in middle to form a globe with sixteen longitudinal grooves, 

 the free upper end of the style being about 2/t in length. Septum with 

 small disc-shaped horizontal swelling in middle. Sporont ovoidal, nucleus 

 large, one karyosome. Syzygies of two sporonts, the primite always 

 larger. Cyst and spores unknown. 



