634 PROCEEDINGS OF THE ACADEMY OP [Oct., 



Entocyte: Coarsely granular; not dense. 



Nucleus: Large, spherical. 



Dimensions: Maximum size 150 microns long by 90 microns broad. 

 The satellites are usually slightly smaller than the primites; but 

 sometimes much smaller and sometimes larger. The smallest animal 

 seen was 50 microns long. 



Cysts: Diameter 170 microns. Gelatinous envelope 12 microns thick 

 in the young cyst, but becoming very much thicker as maturation 

 proceeds. Cysts remarkably uniform in size. Maturation period 

 2-3 days, August, 1903. 



Spores: Cj''lindrical, 25 microns long by 10 microns broad. At the 

 ends, the spore wall is raised into a little circular ridge. 



Host: Harpalus caliginosns Fab. Infection only occasional, but the 

 gregarines usually present in considerable numbers. 



Locality: Wyncote, Pa. 



There is a good deal of confusion regarding the gregarines occurring 

 in the Diplopod family Julidse. These gregarines all bear a certain 

 amount of resemblance to one another, and it has been usual to rele- 

 gate all of them to the species Stenophora juli Frantz. Leger et Du- 

 boscq (1903) have recently shown that such a procedure is not war- 

 ranted for the fauna of Corsica, and the case is certainly the same for 

 that of the eastern United States. The Julidiae of this region are 

 infected with certainly two and possibly three species of Stenopliora, 

 while the classic S. juli apparently does not occur. Of these species, 

 one is unquestionably the form described by Leidy (1853) as Gregarina 

 julipusulli. As indicated by the specific name, Leidy considered its 

 host to be Julus pusillus Say. According to BoUman (1887) this 

 millipede, correctly Julus minutus Brandt, does not occur in Pennsyl- 

 vania, and it may be that Leidy was mistaken in his identification. 

 This matter is not, however, of any great importance, and the specific 

 name of the gregarine must stand. Leidy spelled the specific name 

 of the host pusullus, whereas Say's memoir (1821) renders it pusillus, 

 which spelling will be used for the name of the gregarine. The 

 description is as follows : 



stenophora julipusilli (Leidy). PI. XXX, figs. 16, 17. 



Gregarina julipusulli Leidy (1853), p. 238, PI. 10, figs. 21, 22. 

 Stenophora juli Crawley (1903), p. 51. 



Protomerite: Hemispherical to cylindro-conical to conical. In front 

 a more or less evident papilla, through which there is an apparent 

 pore. Ordinarily broader than long. 



