new Infusoria from American Fresh Waters. 447 



spicuous ; tentacles distinctly capitate, often twice as long as 

 the diameter of the body, arranged in two, three, or four 

 fascicles ; contractile vesicles two ; nucleus ovate, coarsely 

 granulate, subcentral or near the posterior extremity ; endo- 

 plasm granular. Diameter of the body y-^> to j^ inch. 



Hob. Standing water with dead leaves j attached to frag- 

 ments and debris. 



So abundant in its habitat was this Podophrya that a single 

 dip of a small glass rod brought to the microscope-stage a 

 dozen or more attached to floating fragments in the bacterial 

 pellicle. The foot-stalk is here so short and inconspicuous 

 — no previously-observed Podophrya possessing so obscure a 

 stem — that the infusorian may be recognized by this peculi- 

 arity. Unless seen in profile or side view, or in longitudinal 

 optic section and attached to the supporting object, from 

 which it is readily separated, it bears a not remote resem- 

 blance to Sphcerophrya. In the figure (PI. XV. fig. 4) the 

 pedicle is shown of extreme length, being the longest observed 

 among innumerable individuals. Ordinarily it is not more 

 than one half the length there represented. In young or 

 immature forms — which were as plentiful in the infusion as 

 the larger, more distinctly pedicellate specimens — the foot-stalk 

 is so rudimentary that the animalcules seem to be quite sessile, 

 and the posterior point of attachment to be somewhat in- 

 dented, thus giving that part the aspect of an adhesive aceta- 

 buliform disk. The latter is said to be conspicuous in 

 Podophrya Bucket, S.K., so named by Kent from its discoverer, 

 who described it, but failed to supply a specific title ; and 

 Kent intimates that, on account of this peculiar modification at 

 the point of attachment, the creature may hereafter become 

 the type of a new genus. In view, however, of the disk-like 

 aspect of the adhesive extremity in the young P. brachypoda } 

 I would suggest that P. Buckei is probably an immature form 

 of an unobserved, more distinctly pedicellate member of the 

 present genus. 



The embryo of the present species is elongate-ovate, about 

 three times as long as broad, and very active. It has two 

 contractile vesicles and a conspicuous ovate nucleus. I have 

 been unable to follow the development, as all those seen to 

 leave the parent have, within the confined space below the 

 cover-glass, sooner or later fallen victims to the appetite of 

 waiting Podophrya?. 



Solenophrya inclusa, sp. nov. (PI. XV. fig. 5.) 



Lorica subspherical, irregularly rounded or somewhat flat- 

 tened posteriorly, bearing near the anterior border an irregular 



31* 



