48 PROCEEDINGS OF THE ACADEMY OF [Jan., 



Deutoynerite: Cylindrical, with a protrusion at the posterior end, to 

 conical with a pointed end. 

 Epicyte: Thick. 

 Sarcocyte: ?. 



Entocyte: Dense, uniform in both protomerite and deutomerite. 

 Nucleus: Moderate ; oval to spherical, with one karyosome. 

 Dimensions: 320 microns long. 

 Host: Boletophagus cornutus. 

 Locality: Swarthmore, Pa. 



? Gregarina calverti' sp- n. PI. II, figs. 19-21. 



Epimej'ite: Not seen. 



Protomerite: Greatly compressed in the large animals (figs. 19, 20). 

 Anterior boundary usually straight or slightly convex, but frequently 

 concave, giving the protomerite the form of a shallow cup. Approxi- 

 mately reniform in the young animals (fig. 21). Constriction always 

 deep and sharp. 



Deutomerite: Displays a shoulder at the anterior end, being here 

 widest. Narrows gradually backward, more regularly in the younger, 

 less regularly in the older animals. Posterior end always blunt. 



Epicyte: Thicker than the sarcocyte. Longitudinal sculpturing may 

 or may not be present. It was often possible to see that the proto- 

 merite was longitudinally striated, but the cause for this appearance 

 seemed to he deeper than the epicyte. 



Sarcocyte: Thinner than the epicyte. 



Myocyte: Easily seen in the living animals. 



Entocyte: In large animals black in transmitted light in the deuto- 

 merite and nearly so in the protomerite. In most cases, however, the 

 granules do not fill the entire entocyte, but thin out rapidly toward the 

 posterior end, so that in the last fourth or fifth of the entocyte they con- 

 stitute only a narrow, central strip. This condition is shown in fig. 21, 

 from a young animal, and is held true for nearly all the gregarines seen. 



Nucleus: Not large, spherical, with one spherical karyosome. 



Movements: These gregarines, although quite flexible, are rather 

 sluggish, and usually lie motionless. Progression, when observed, was 

 generally accompanied by lateral movements of the protomerite. As a 

 rule, the animals were slightly curved, a phenomenon frequently dis- 

 played by elongated gregarines. 



Diynensions: Maximum length 1,500 microns. 



Host: Lysiopetalum lactarium. 



Locality: Wyncote, Pa. 



''To Philip P. Calvert. 



