THE SPOROZOA 



235 



Genus 13. Klossia, A. Schn., 1875. The spherical spores are 

 tetrazoic or poly zoic. 1 



FIG. 65. 



Sporogony of Adelea dimidiata, A. Schn. (par. Scolopendra morsitans). a, sporpnt encysted 

 in a host-cell, and commencing to divide, b, the contents of the oocyst have divided into a 

 number of sporoblasts. c, oocyst containing ripe spores, d, a ripe spore more highly 

 magnified, showing the two sporocysts and the granular residual body. From Wasielewski, 

 after A. Schneider. 



The type-species is K. helicina, A. Schn. (Fig. 48), infesting the kidneys 

 of various land-snails (Helix spp., Succinea spp.). The parasite and its life- 

 many authors place the species in the genus Klossia. Assuming, however, that the 

 trizoic condition is an adequate generic difference, the name Benedenia must never- 

 theless be changed on the ground of preoccupation, having been employed by Diesing 

 in 1858 for a Trematode. Blanchard has proposed in its place the generic name 

 Legeria (1900), but Labbe had already (1899) given this name to the genus of 

 Gregarines previously termed Dufouria (see p. 200). As regards the specific name, 

 Labbe terms the trizoic species, occurring in Sepia, Klossia eberthi, and retains the 

 specific name octopiana of Schneider for a polyzoic species of Klossia occurring in 

 Octopus, If two distinct species, inhabiting different hosts, were originally confused 

 by Schneider under one name, this is certainly a useful reform. 



Very recently Liihe [48] has proposed the name Eucoccidium for Benedenia. 

 He regards the name Coccidium as obsolete (see above p. 232, footnote), having been 

 given to the sporogonous cycle of Eimeria. Since, therefore, " Benedenia " has only 

 sporogony, he considers the name Eucoccidium appropriate to denote snch a form. 

 Liihe retains, however, the specific name octopianum, which is inappropriate if, as 

 alleged, the species occurs in Sepia and not in Ocbyus. 



1 Mesnil [6] considers the genus Klossia to be normally tetrazoic, and states that 

 in K. helicina the usual number of sporozoites is four, though it may exceptionally 

 be as high as eight. He also throws doubt upon the alleged occurrence of 10-12 

 sporozoites in the spore of A". 



