463 



Fig. IL 



This genus is closely related to the other two genera of the family, 

 Menospora Leger and Hoplorhynchus Cams. 



Type, Ampho pyocephalus amphorellus sp. nov. 



As defined this genus includes two species, Gregarina actinota 



Leidy = Amphorocephalus actinotus (Leidy), and Amphorocephalus 



amphorellus. They may be distinguished as follows : 



a. Epimerite three or more times as long as wide, terminal disk deeply 



four-lobed, wider than the epimerite proper. A. actinotus (Leidy). 



aa. Epimerite about twice as long as wide, terminal disk nearly circular, 



with only a slight indication of the four-lobed condition, its width 



less than that of the epimerite proper. 



A. amphorellus sp. nov. 



Amphorocephalus amphorellus sp. nov. 



Host, Scolopendra héros Girard, a Chilopod. Collected May 24 

 and October 9, 1912, near Boulder, Colorado. 



Average specimens, 500 a to 850 u ; smal- 

 lest observed, 78 u; largest 970 t u. 



Habitat, Intestine. 



Length of the protomerite in specimens 

 over 500 |U, 18 to 22 in the length of the deu- 

 tomerite ; maximum width of the protomerite 

 1,7 to 2,5 in the maximum widthof the deuto- 

 merite; epimerite about twice the length of the 

 protomerite. 



Epimerite flask-shaped, apical disk not 

 as wide as the widest part of the epimerite 

 proper; epimerite persisting in most specimens 

 under 600 ,« length. 



Protomerite roughly cylindrical, about 

 twice as wide as long, with a distinct constric- 

 tion near the middle; anterior half narrowed 

 slightly, anteriorly. 



Deutomerite elongate, especially in the 

 sporonts; pointed anteriorly. 



Sarcocyte clear and fairly thick over the 

 entire gregarine. 



Endocyte of the protomerite pale gray 



and fairly dense; endocyte of the deutomerite, , 



J ' J ' ligure 1. Cephalont, 525,1«, 



very dense and quite black. of Amphorocephalus ampho- 



This active gregarine was taken in ^.^^ ^ont,900,u,of 

 large numbers from each of the hosts exa- Amph. amphorellus. 



