61] STUDIES ON GREG A RINESKA MM 



61 



While the observations of the two authors are not comparable, the 

 first from an immature specimen only, yet there is a probability of their 

 being identical, the hosts being the same. In order therefore to reduce 

 the number of older incompletely described species they should be absorbed 

 wherever possible. In the present species there are at least no conflicting 

 characters. 



GREGARINA MYSTACIDARUM Frantzius 



[Figure 76] 



1848 Gregarina Mystacidarum Frantzius 1848: 193, 196 



1848 Gregarina Mystacidarum Stein 1848: 188 



1851 Gregarina Mystacidarum Diesing 1851: 12 



1859 Gregarina Mystacidarum Diesing 1859:734 



1863 Gregarina Mystacidarum Lankester 1863: 94 



1875 Clepsidrina mystacidarum Schneider 1875: 592 



1899 Gregarina mystacidarum Labbe 1899: 11 



1903 Gregarina mystacidarum Minchin 1903: 335 

 1911 Gregarina mystacidarum Wellmer 1911:118 



Sporonts in pairs, long-cylindrical, Ratio LP:TL::1:6 to 10; 

 WP : WD ::!:!. Protomerite cylindrical, truncate at free end, slightly 

 constricted at septum. Deutomerite cylindrical, broadly rounded pos- 

 teriorly. Nucleus spherical. Epimerite not known. Cysts spherical. 



Taken at Berlin and in East Prussia. Host Mystacides sp., larva. 



This host is also parasitized by Pileopcehalus chinensis Schn. 



GREGARINA MARTELI Leger 

 [Figures 36 and 37] 



1904 Gregarina Marteli Leger 1904: 358 

 1911 Gregarina Marteli Sokolow 1911:279 



Sporonts in pairs, elongate, slender. Length 100 to 150/*. Width 

 not given. Ratio LP :TL :: 1 : 10; WP : WD ::!:!. Protomerite of 

 primite conoidal, blunt at apex and dilated in posterior two-thirds. Pro- 

 tomerite, of satellite deeply cupped in anterior portion. Constriction at 

 septum. Deutomerite elongate-cylindrical, of same width throughout, 

 ending in a broad blunt extremity. Epimerite a simple globular papilla. 

 Nucleus spherical. Cyst and spores unknown. 



Host: Embia Solieri Ramb., larv. Intestine. 



Taken at Cavaliere, France. 



This host is also parasitized with Diplocystis clerci Leger (Monocystid 

 Gregarine) and Adela transita Leger (Coccidian). 



Genus GAMOCYSTIS Schneider 1875: 586; 1882: 443 

 Sporonts biassociative, united in apposition, ovoidal, stout-bodied, 

 resembling a Monocystid. Protomerite only in trophozoite. Sporulation 

 partial. Cyst without spore-ducts. Spores elongate-cylindrical. 



