IIOTIFEIIA. 
457 
the temporarily fixed and the absolutely free. Cephalosiphon Umnias, Ehr., 
is truly a Philodina, During the winter, Philodinay Floscularia^ Stephano~ 
ceroSy 3£elicerta, and Limnias build up a floccose covering around them to a 
greater or less extent. Some of these forms are figured, encased and expanded. 
Chantrell and Davis (/. c. v. p. 336, vi. pp. 48 & 49) reply to some of his obser- 
vations j and the latter states that Cephalosiphon is not a Philodina. 
Floscularia. The rotary organ is always 5-lobed; and the cilia move 
during the unfolding of the lobes, or when approached by a living organism. 
Bartsch, l.c.- 
Mclicerta. Cubitt points out its essential characters, and refers to it the 
genera Limnias, CEcistes, and Tubicolaria : 1. c. vi. pp. 166-169. 
Melicerta ringens. Habits described by Bartsch, 1. c. On the formation of 
its tube, c/. II. Cubitt, 1. c. pp. 208 & 209, pis. 83 & 84. 
CEcistes crystallinus. This and other Rotifers in a warm-water pond at 
Windsor are mostly destitute of tubes. The mode of action of the cilia is 
still doubtful, some observers thinking that only the second row act in 
carrying the food to the mouth. Davis & Chantrell, M. Micr. J. v. pp. 
41 & 42. 
CEcistes intermedms, Davis, figured by H. Cubitt, 1. c. pi. 82 (lower fig.). 
Ilydatina senta possesses, attached to the brain, at the points where the 
nerves running to the two cervical palpi are given off, two pedunculate (au- 
ditory ?) vehicles, consisting of a very thin envelope, enclosing finely granular 
contents, in which about half a dozen orange-red globules are suspended. 
During the movements of the animal these vesicles oscillate to and fro. The 
cilia on the interior of the rotary organ extend down to the ground. 
Bartsch, /. c. 
Philodina aculeata, var. (?) or sp. n. (?) : cf. J. Barker, Q. J. Micr. Sci. xi. 
p. 210. 
Monommata, g. n., Bartsch, 1. c. Body cylindrical j skin partially har- 
dened ; 2 long caudal points, and one cervical eye. M. {Notommata) tigris 
and longiseta, Ehr. 
Pedalion mira, g. & sp. nn., C. T. Hudson, M. Micr. J. vi. pp. 121-124, 
216, pi. 94. A transitional form, showing some affinities to the Crustacea. 
New species : — 
Floscidaria a/chps, Cubitt, 1. c. vi. p. 83, pi. 93. Occurs associated with 
F. coronetta : F. ornata is figured for comparison. 
Melicerta annidata, id. 1. c. vi. p. 167, pi. 98. 
Stephanoceros horatii, id. 1. c. vi. p. 166. 
Eosphora carihcea, Schmarda, Zoologie, i. p. 341, fig. 241. 
^ Jlexarthra polyptcra, id. I, c. p. 342, fig. 242, El Kab. 
Rotifer megaceros, id. 1. c. p. 346, fig. 244, Alexandria. 
Pterodina valvata, C. T. Hudson, M. Micr. J. v. pp. 26-29, pi. 72, Bristol, 
ponds. 
Arthracanthus quadriem'nis, Schmarda, 1. c. p. 346, fig. 246, Egypt. 
Ascomorpha saltans, Bartsch, I, c., Tubingen. 
