265] STUDIES ON GREGARINES— WATSON 55 



STENOPHORA JULI (Frantzius) Labbe 

 [Figures 7 and 8] 



Stenophora : Sporonts solitary, elongate. Dimensions not given. 

 Ratio length protomerite : total length :: 1 : 20 (approximately); 

 ratio width protomerite : width deutomerite : : 1 : 2. Protomerite 

 small, cylindrical at base, sharply conical above, little wider than high, 

 a small papilla with an apparent pore at apex. Deutomerite elongate, 

 slightly wider in anterior third than elsewhere, tapering gradually to an 

 acute but blunt cone. Endocyte yellow to orange. Nucleus spherical, 

 diameter half that of the deutomerite at its widest part, containing one 

 large karyosome. Cysts dehisce by simple rupture. Spores fusiform 

 with equatorial line. 



Taken at Roscoff, France. Hosts: Julus sahulosus (L.) ; Julus fal- 

 lax Meinert (Julus terrestris). Habitat: Intestine. 



Stenophora juli has been the source of more confusion and of greater 

 discussion than any other gregarine parasitic in the diplopods. The too 

 concise descriptions and the lack of any measurements of the animals by 

 the earlier writers have led later workers to place a number of different 

 parasites in this same group and to regard them all as Stenophora juli. 



Frantzius' beautiful drawings are accompanied by no description 

 beyond the statement that the parasite was found in Julus. 



Diesing called the parasite Gregarina juli Frantzius. His descrip- 

 tion is as follows : 



"Proboscis? Receptaculus capitellatum acutum brevissimum. Corpus longum 

 fusiforme. Hab. Julus terrestris . . ." 



Lankester (1863:94) relegated to this species the following: Grega- 

 rina juli pusUli Leidy, G. juli marginati Leidy, and G. larvata Leidy, all 

 of which belong elsewhere, the last two being synonymous. 



