39 



like ActinopJirys sol that I would pronounce it the same. 

 The Freia producta Wright, was most common ; this 

 creature is related to the fresh- water trumpet animal- 

 cules, and is one of the most beautiful protozoans I have 

 ever seen. I reproduce here, with some changes, my 

 description of the Chesapeake form from the American 

 ]N"aturalist for ]!*^ovember, 1880. "The tubes in which 

 ' ' the animalcules reside are formed of a narrow trans- 

 " parent ribbon of horny consistency, wound into a spir- 

 "al and terminating in a trumpet-shaped extremity from 

 "which the odd peristome of the inhabitant protrudes. 

 "The basal or attached end is usually bent at an angle 

 "to the tube and bears a striking resemblance to the 

 "foot end of a stocking resting upon the sole. This por- 

 "tion is not composed, like the tube, of a spiral ribbon, 

 "but is simply a thin- walled sac, from the open-end of 

 ' ' which the ribbon takes its rise, but it is composed of 

 "the same kind of material. Many of the tubes show a 

 "trumpet-like rim projecting from the sides of the form- 

 "er, a little above the middle, and of the same form as 

 ' ' the terminal rim, showing that this, like the form de- 

 " scribed by Mr. Wright from British waters, may stop 

 "building its tube for a time and then recommence. 



' ' The adult animal tube and all, when fully extended 

 "will measure 1-25 of an inch in length. It is of the 

 ' ' same color as Stentor cceruleus^ or bottle green, but has 

 "the power of elongating and twisting itself as greatly as 

 "aS^. Toeseli. The peristome is quite unlike that of Freia 

 ' ' ampulla^ and bears a strong likeness to the blades of a 

 "pair of obstetrical forceps. The blades are deex^ly 

 "grooved, forming a deep ciliated demi-canal with paral- 

 "lel saides, and at the junction of their bases lies the 

 ' ' spacious, twisted and spirally ciliated pharynx, which 

 "is bounded dorsally and ventrally by the prominent 

 "folds which unite (m either side with the hmg curved 

 "lobes of the peristome. There is a small basal disc 

 "as in Btentor^ and tUfe ectosarc is traversed as in that 



