363] STUDIES ON GREGARINES— WATSON 153 



ing in a large cone, as broad as high, no constriction at septum. Deuto- 

 merite short, ovoidal, nearly as wide as long, terminating in an obtuse 

 angled cone. Nucleus spherical and containing one large karyosome. 

 Epimerite a short retractile digitiform process which later becomes a 

 flattened button. Cysts spherical or ovoidal, 100/x in diameter, dehisc- 

 ing by simple rupture. Spores biconical, broad through middle, 9 by 



Taken in France. Host : Tenebrio molitor L. larva. Habitat : In- 

 testine. 



This is a much discussed and confused species. Early writers 

 grouped together all the polycystid gregarines found in the larva of 

 Tenebrio molitor as one species. Hammerschmidt evidently actually 

 found several species for he named the one species he described Clepsid- 

 rina polymorpha. Stein diiferentiated three species and separated out 

 this one, even assigning to it a different genus than the other two, C. 

 polymorpha and C. cuneaia. 



Schneider described under the name Clepsidrina polymorpha 

 (Hamm.) three species, one of them being the Stylorhynchus ovalis of 

 Stein. His words are as follows: 



"L'espece Clepsidrina polymorpha a ete instituee par Hammerschmidt, et plus 

 tard demembree par Stein, qui trouva moyen d'etablir a ses depens trois especes dont 

 une fut reportee dans le genre Stylorhynchus. 



Ce pretendu S. ovalis est simplement le cephalin de Tune des varietes que nous 

 allons decrire." 



Berndt, in a long paper on the Gregarines of Tenebrio molitor 

 larva, still considered this species the cephalont of G. polymorpha in 

 1902. 



It remained for Leger and Duboscq (1904) to clear up the discus- 

 sion. They created a new genus for this species, and called it Steinina. 



STEININA OBCONICA Ishii 



[Figure 95] 



1914 Steinina obconica Ishii 1914:439-41 



Steinina: Sporonts solitary, obese. Length 120 to 140/a. Width 68 

 - 80/*. Ratio length protomerite : total length : : 1 : 5 to 1 : 7. Width 

 protomerite : width deutomerite : : 1 : 1. Protomerite dome-shaped, three 

 times as wide as high. Septum constricted slightly at periphery. Deu- 

 tomerite widest just below septum, and tapering to a slender, bluntly 

 pointed posterior extremity. Epimerite a short conical hyaline projec- 



