301] STUDIES ON GREGARINES— WATSON 91 



AMPHOROCEPHALUS AMPHORELLUS Ellis 



[Fibres 45, 46] 



1913 Amphorocephalus amphorellus Ellis 1913 :463-4 



Amphorocephalus : Sporonts solitary, elongate, length 500 to 970/i,, 

 width not given. Ratio length protomerite : total length : : 1 : 1.7 ; 

 width protomerite : width deutomerite : 1 : 2.5. Protomerite dome 

 shaped, broadly rounded in front, a distinct constriction near middle. 

 Deutomerite cylindrical, tapering slightly to a sharp point. Endocyte 

 dense, nearly blacls. Epimerite flasli-shaped with fluted apical disc, ses- 

 sile on the protomerite, persisting on large free cephalonts. Nucleus 

 not noted. Cyst and spores not seen. 



Taken at Boulder, Colo. Host: Scolopendra heros Giard. Habi- 

 tat : Intestine. 



This genus contains the unique species above. It is characterized 

 by the flasl^-shaped epimerite with fiinger-lilse processes at the apex and 

 by the protomerite having a constriction at the middle, extending hori- 

 zontally around the same. 



HOPLORHYNCHUS ACTINOTUS (Leidy) Crawley 



[Figures 42, 43] 



1899 Gregarina actinotus Leidy 1889 :10 



1903 Hoplorhynchus actinotus Crawley 1903 :55-56 



1913 Amphorocephalus actinotus Ellis 1913b :277 



Hoplorhynchus: Sporonts solitary. IVEaximum length recorded 

 that of Leidy, 520/a, maximum width SO/x. Crawley's maximum recorded 

 length, 4:85fji, width 105yu.. Ratio length protomerite : total length : : 

 1 :9 (Leidy) to 1:12 (Crawley); width protomerite : width deuto- 

 merite ::1 :2 (Leidy and Crawley). Protomerite dome shaped, twice 

 as broad as high. Deutomerite roughly triangular, wider than protome- 

 rite at septum. Attaining maximum width at shoulder, thence taper- 

 ing to a more or less sharp point. Epimerite 80 to 100/^ long, vase shaped, 

 broadest near base and tapering to a necli where it again widens into a 

 broad disc of short digitform processes from 8 to 20 in number. Craw- 

 ley says : 



" amphora shaped. Differentiated in front into four dichotomously branched 



lobes. In the small animals making up nearly 1/2 the total length; in the 



adults from 1/4 to 1/5 of the total length." 



