405] STUDIES ON GREGARINES- WATSON 195 



UNCERTAIN SPECIES OF UNCERTAIN PA1 



GEEGARINA BOLETOPHAGI Crawley 



[Figure 145] 



1903 Gregarina boletophagi Crawley 1903-47-8 



Sporonts not associative, cylindrical, 320/* in length. 



"Protomerite large, variable in shape. Separated from deutomerite by a 



sharp constriction. Deutomerite cylindrical, with conical end. Endocyte 



dense, nucleus oval to spherical, with one karyosome. Epimerite not seen. 



Host: Boletophagus cornutus. Locality Swarthmore, Pa." 



Ellis (1913b:280) says 



"This species has been transferred to this genus (Anthorhynchus) from 

 Gregarina although neither cysts nor epimerite are known, because it is not found 

 in association and because the anterior portion of the protomerite is suggestive of 

 the slightly produced protomerite of other species of the genus Anthorhynchus 

 which bear epimerites. It is to be regarded as a provisional determination only." 



No characteristics of the genus Anthorhynchus are evident. The 

 epimerite, not being seen, cannot be compared with the very large glo- 

 bular epimerite of the latter genus and the spores cannot be compared, 

 not being seen. The size of the species in question is only one seventh 

 that of the type species of the genus Anthorhynchus (A. sophiae Schn.). 



It seems that the only solution of the problem is the relegation of 

 the species to the uncertain group. 



GREGARINA MICROCEPHALA Leidy 



[Figure 149] 

 1889 Gregarina microcephala Leidy 1889 :11 



"Body clavate, the head like a watch crystal with a little ball at 

 the summit." Length 350/A, width 100/*, head 12/t long x 40^ wide. 



Taken at Philadelphia, Pa. Host: Arrhenoplita licornis Olivier 

 (Hoplocephalus bi.). Habitat: Intestine. 



Ellis (1913b) corrected the host name. He left the species in the 

 genus Gregarina. Leidy said of the species : 



"It bears a close resemblance to Echinocephalus hispidis Schneider - - but 

 in the one described I at no time found digitiform appendages on the head." 



That the species belongs in the genus Gregarina seems doubtful ; its 

 position is left undetermined. 



