GENUS HETEEOPHEYS-HETEEOPHEYS MYEIAPODA. 247 



pertains to Heterophrys, and resembles the H. Fockii described by Mr. 

 Archer.* It also resembles a form described by Professor Greeff, and with 

 doubt considered to be the young oi Acanthocystis viridis.f 



The individual was obtained in August, from a pond in a sphagnous 

 swamp, at Vineland, New Jersey. It resembled the Actmophrys sol, but 

 was of less uniform foamy aspect, being composed of a spherical mass of 

 pale granular protoplasm, with a number of clear globules or vacuoles of 

 various sizes scattered through it. The body was enveloped in a thick 

 layer of clear protoplasm rising in wave-like points on the pseudopodal 

 rays. 



An enigmatic body of uncertain reference, of which two views of 

 the same individual are given in figs. 5, 6, pi. XLV, may perhaps pertain 

 to Heterophrys. It was obtained in July, from a ditch in which grew 

 Hippuris vulgaris, at Fort Bridger, Wyoming. When first observed, it was 

 nearly spherical, and resembled in general appearance au Actinophrys, but 

 was of a red hue, and was enveloped with a thick layer of colorless proto- 

 plasm defined by a minutely dentate outline. The body measured 0.04 

 mm. in diameter, and consisted of a basis of colorless, faintly granular 

 protoplasm mingled with red granules of varied depths of hue, difi'used and 

 partially collected in irregularly rounded masses. It also contained two 

 large clear globules, probably nuclei, which remained unchanged during 

 the time the creature was under examination. The rays were compara- 

 tively few, and appeared as abruptly tapering processes of the superficial 

 colorless protoplasm of the body. They varied in length and degree 

 of robustness, and were mainly straight and simple, though a few of the 

 stronger ones were furcate. 



The stratum of protoplasm enveloping the body was clear, and 

 appeared to have a finely echinate or granular surface. Sometimes the 

 granules appeared to be connected with fine perpendicular striae, extending 

 through the cloak of protoplasm, as seen on one side of fig. 6, so as to 

 resemble the pin-like rays of Acineta ; but the appearance was uncertain, 

 and may have been deceptive. 



As the animal moved in the same slow, gliding manner of an Actino- 

 phrys, it gradually underwent a variety of changes in shape. Becoming 



* Quart. Joiir. Mic. Sc. 1869, pi. xvi, fig. 3. 



t Arcliiv f. mik. Auatomie, 1869, Taf. xxvii. Fig. 35. 



