1903.] NATURAL SCIENCES OF PHILADELPHIA. 45 



I have opened perhaps a dozen termites in a search for this parasite, 

 but have not yet encountered it. 



Gregarina achetaeabbreviatae Leidy. PI. HI, figs. 34-35. 



Gregarina achetceabbreviatce Leidy (18.53), p. 238, PI. 11, figs 33, 34. 



Epimerite: Simple, spherical. 



Protomerite: Somewhat pentagonal to hemispherical. Separated 

 from the deutomerite by a sharp constriction. Shape modified in the 

 associations. 



Deutomerite: Cylindrical, tapering slightly. Terminating bluntly. 



Epicyte: Thick. 



Sarcocyte: ?. 



Entocyte: Of equal density in both protomerite and deutomerite. 



Nucleus: Large, spherical with several karyosomes. 



Dimensions: Maximum length 600 microns. 



Host: Acheta abbreviata. Infection extensive. 



Locality: Beach Haven, N. J. 



? Gregarina scarabeirelicti Leiily. 



Gregarina scarabeirelicti Leidy (1851), p. 208, 287. 

 Gregarina scarabeirelicti Leidy (1856), p. 47. 



I have not seen this species. 



■? Gregarina meloIontbaebrunneaB Leidy. 



Gregarina melolonthoebrunneoe Leidy (1856), p. 47. 



I have not seen this species. 

 Gregarina passalicornuti Leidy. PI. II, fig. 24. 



Gregarina passalicornuti Leidy (1853), p. 238, PL 11, figs. 30-31. 



Epimerite: ?. 



Protomerite: Hemispherical in the primites ; considerably compressed 

 in the satellites. 



Deutomerite: Cyhndrical; sometimes slightly narrower about the 

 middle. 



Epicyte: Thick. 



Sarcocyte: Thick. 



Entocyte: Opaque. 



Nucleus: Moderate. Spherical. 



Dimensions: Average length of pairs 350-400 microns. 



Host: Passalus cornutus. 



■; Gregarina polydesmivirginiensis Leidy. PI. II, fig. 25. 



Gregarina 'polydesmivirginiensis Leidy (1853), p. 238, PI. 10, figs. 23-29. 

 Epimerite: Not seen. 

 Protomerite: Always small; sometimes apparently undeveloped in 



