53] STUDIES ON GREGARINESKAMM 53 



Maximum length 5 mm. This length is reached only by the species 

 just preceding, the two being the longest known species of gregarines. 

 Intestine of Phalangium opilio. 

 Taken at Tomsk, Russia. 



Leger also found Acanthrospora repelini in his material. 



Family ACANTHOSPORID AE Leger 1892 : 167 



Sporonts solitary. Epimerite simple or appendicular. Dehiscence by 

 simple rupture. Spores with equatorial and polar spines. 



Genus ACANTHOSPORA Leger 1892: 167 



Epimerite a simple large conical papilla on a short neck. Spores biconi- 

 cal or ovoidal with a row of equatorial spines and a tuft of four spines at 

 each pole. 



ACANTHOSPORA REPELINI Ledger 

 [Figures 57 and 107] 



1897 Acanthospora Repelini Leger 1897:13,42 



1899 Acanthospora repelini Labbe 1899: 28 



1903 Acanthospora repelini Minchin 1903: 338 



1911 A canthospora repelini Wellmer 1911: 139 



Sporonts solitary, obese. Maximum length 1 mm., width 250ju. 

 Ratio LP : TL :: 1 : 4 (without epimerite); WP : WD :: 1 : 1.2. Proto- 

 merite dome-shaped, deeply constricted at septum. Deutomerite widest 

 in anterior third, tapering irregularly to a sharp point. Epimerite a 

 broad flattened papilla indented in the middle and crenulate along the 

 margin. Nucleus spherical, one karyosome. 



Cysts spherical, 500/z, dehiscence by simple rupture. Spores 13 by 4.8/x, 

 biconical, spines at apices and equator. 



Intestine of Opilio grossipes Herbst, Phalangium cornutum, and P. 

 opilio. 



Taken in Tourraine, France, and in East Prussia. 



This species was found in association with Sciadophora phalangii by 

 Leger. There is no possibility of confusion, however, in the two species. 



The epimerite of this species does not conform closely to that of the 

 type, A.pileata(L6geT,1892: 115). 



Uncertain Species 

 [? Wellmer; 



1911 Gregarinasp. Wellmer 1911: 148 



Intestine of Oribata geniculata (L.). Taken in East Prussia. 

 There are no data whatever concerning this gregarine form. 



