170 ILLINOIS BIOLOGICAL MONOGRAPHS [380 



GREGARINA CUNEATA Stein 

 [Figures 132, 133, 134, 135, 136, 152] 



1838 Clepsidrina polymorpka Hammerschmidt 1838 :357 



1848 Gregarina cuneata Stein 1848:209-10,222 



1848 Gregarina cuneata Frantzius 1848:196 



1851 Gregarina cuneata Diesing 1851 :13 



1863 Gregarina polymorpha Lankester 1863 :95 



1875 Clepsidrina polymorpha 



var. cuneata Schneider 1875:581 



1899 Gregarina polymorpha 



var. cuneata Labbe 1899 :11 



1902 Gregarina cuneata Berndt 1902:393-404 



1903 Gregarina xylopini Crawley 1903:47 



1904 Gregarina cuneata Leger & Duboscq 1904 :354-5 



1910 Clepsidrina cuneata Pfeiffer 1910:108 



1911 Gregarina cuneata Ishii 1914:435 

 1914 Gregarina cuneata Ishii 1914:435 



Gregarina: Sporonts biassociative, elongate cylindrical. Length 

 380/x; width 170/i. Ratio length protomerite : total length primite :: 

 1:3; width protomerite : width deutomerite primite : : 1 : 1.5. Pro- 

 tomerite elongate cylindrical, 2y 2 times as wide as posterior portion, 

 dilated at anterior end, widest part acutely angled, apex broadly 

 rounded. Slight constriction at septum. Deutomerite elongate, width 

 gradually increases from septum to posterior portion, terminates in a 

 very broadly rounded extremity. Nucleus spherical, small, with one 

 karyosome. 



Cysts spherical, 240/u, in diameter, long spore ducts. Spores ex- 

 truded in chains, doliform, 5.7 by 4/t. 



Taken at Roscoff and Caen, France; Berlin; Philadelphia; and in 

 the province of Izu, Japan. Host : Tenebrio molitor L. larv. and adult. 

 Habitat: Intestine. 



Hammerschmidt described two gregarines from Tenebrio molitor 

 under one name, Clepsidrina polymorpha. He regarded them as differ- 

 ent shapes assumed by the same parasite. 



Stein said, concerning his discoveries : 



"Ich fand drei verschiedend Formen, von denen zwei zur Gattung Gregarina 

 in engern Sinne, eine zur Gattung Stylorhynchus gehort. Hammerschmidt kannte 

 wahrscheinlich bereits zwei Formen, doch geht dies selbst aus seinen Abbildungen 

 die gar zu roh sind, nicht mit volliger Bestimmtheit hervor ; er hielt sie aber f iir 

 eine Art und nannte sie Clepsidrina polymorpha." 



Stein's figure is reproduced in Figure 133. 



