92 ILLINOIS BIOLOGICAL MONOGRAPHS [302 



Endocyte dense and opaque. Nucleus ovoidal, diagonally placed. Cyst 

 and spores not known. 



Taken at Philadelphia, "Wyncote and "Wallingford, Pa., and Raleigh, 

 N. C. Hosts: Scolopocryptops sexspinosus (Say) and Scolopocryptops 

 sp. Habitat : Intestine. 



Crawley (p. 56) says: 



"Apparently in this gregarine the septum tends to disappear. It is much more 

 evident in some cephalonts than in others, and in one sporont seen no septum 

 could be made out, and the endocyte of the protomerite was not distinguishable 

 from that of the deutomerite." 



Ellis (1913b) placed this gregarine in his genus Amphorocephalus. 

 He characterizes the genus as follows : 



"Protomerite with a constriction near the middle dividing it into two lobes, 

 the anterior of which is the smaller; epimerite longer than wide, but not extremely 

 elongate, widest in its posterior third, narrowed at its junction with the protomerite 

 terminating in a somewhat concave enlargement, the edge of which has a fluted 

 appearance because of the presence of numerous small finger-like processes; deu- 

 tomerite elongate." 



It is readily seen that the species in question does not fit this generic 

 diagnosis for the following reasons: 1) the protomerite is not con- 

 stricted in the middle, with a small anterior part; 2) the epimerite is 

 elongate, from two to four times as long as wide (in Ellis' described 

 species it is but little longer than wide, 1 : 1.2) ; 3) the apex does not 

 terminate in a broad disc, the edge of which has a fluted appearance, be- 

 cause of the presence of numerous small finger like processes, but termi- 

 nates in a disc edged with dichotomously branched distinctly separated 

 digitiform processes, from eight to twenty in number; 4) the deutome- 

 rite is not elongate as in Ellis' figure, in which it is from eighteen to 

 twenty-two times the length of the protomerite, but is only from six to 

 twelve times the length of the protomerite. I have therefore replaced 

 the species in the genus designated by Crawley. 



HOPLORHYNCHUS SCOLOPENDRAS Crawley 



[Figure 41] 



1903 Hoplorhynchus scolopendras Crawley 1903a :636-7 



1913 Amphorocephalus actinotus EUis 1913b :277 



Crawley's description of the species is quoted: 



"This species is created for a gregarine parasitic in Scolopendra woodi Mein- 

 ert from Raleigh, N. C. Two specimens were present. One of these, when first 



