ISO ILLINOIS BIOLOGICAL MONOGRAPHS [360 



PYXINIA RUBECULA Hammerschmidt 

 [Figures 119, 159] 

 1838 Pyxinia rubecula Hammerschmidt 1838:357 



Pyxinia: Sporonts solitary, obese. Measurements not given. Ra- 

 tio protomerite : total length : : 1 : 3.6. Width protomerite : width deu- 

 tomerite : : 1 : 1.2. Protomerite large, regularly eonoidal, a little longer 

 than wide (1.2 :1), constriction at septum. Deutomerite conical, wid- 

 est at shoulder, tapering to a slender, pointed extremity. Endocyte 

 dense, of protomerite much less dense. Nucleus ellipsoidal.* Epimerite 

 situated upon a short neck, urn-shaped, wide mouthed, crenulate on the 

 periphery, with a short, stout conical style projecting upward through 

 the center. 



Cysts spherical, 250 to 280/li in diameter, spores bluntly biconical, 14 

 by 7/x. 



Taken at — '■ ?, Germany, and at Poitiers, France. Hosts: 



Dermestes lardarius L. larva and D. vulpinus Fabr. adult. 



PYXINIA CRYSTALLIGERA Frenzel 



[Figures 84, 85, 86] 



1892 Pyxinia crystalligera Frenzel 1892 :314-29 



Pyxinia : Sporonts solitary, elongate. Maximum length 750/a. 

 Width not given. Ratio length protomerite : total length : : 1 : 5 to 1 : 

 10; width protomerite : width deutomerite ::1.1 : 1. Protomerite spher- 

 ical in adults. Deutomerite of adults regularly cylindrical, tapering in 

 posterior third to a long, slender, bluntly pointed extremity. Epime- 

 rite a short sharp rigid style resting upon a small crenulate corona, the 

 whole superimposed upon the cone shaped protomerite of the cephalont. 

 Endocyte containing large, strongly refractile variousl}^ shaped crystals 

 and granules of pyxinin. Nucleus irregularly ellipsoidal, containing 

 several karyosomes. 



Cyst and spores not known. Taken at Cordoba, Argentina. Hosts : 

 Dermestes vulpinus Fabr. ; Dermestes peruvianus Casteln., adults and 

 larvae of both. Habitat: Intestine. 



*Frantzius' illustration shows a spherical nucleus. 



