OF THE ENCHELIA. 



611 



equally rounded at the two ends, covered by long, very numerous, vibratile 

 cilia, in parallel rows ; no mouth. I," says Dujardin, " have restricted the 

 term to animalcules parasitic within Lumhric'i, but ought probably to include 

 the form met with by Ehrenberg in the AnodontceJ^ 



This genus requii^es further examination, and may probably be cancelled 

 by the transfer of its members to other groups. It is certain that several of 

 its enumerated species are mouthless, and that some belong to the Opalinaea ; 

 and Dujardin clearly pm^sued a very right course in detaching it from the 

 heterogeneous class Encheha, and in bringing it into relation with Opalina. 

 Perty has followed a similar plan, and instituted a family of parasitic animal- 

 cules under the name of Cobalina, comprehending besides Leucojyhri/s (repre- 

 sented by only one species, L. striata) Opalina, Plagiotoma, and Alastor. 

 Like Dujardin, also, he transfers L. patuJa to Bursaria ; treats L. Spatliida 

 as identical with Spathidium liyaUnum (Duj.), but places it in a family 

 Holophi^yina, along with Holophrya and Enchehjs (i. e. as represented by 

 E. Farcimen and E. Pupa). Neither Ehrenberg's descriptions nor figures 

 are sufficient to identify L. sanguinea either with Bursaria or Opalina ; its 

 colour lends no aid, since it is doubtless accidental. L. p>yriformis and L. 

 carnium are doubtful members, and the rest named are petty clearly Opalinaea. 

 L. carnium is treated by Dujardin as identical with TricJioda carnium. 



Leucophbys patuJa ( Triclioda patula, 

 M.) (xxiv. 276, 277) {Bursaria patula, 

 Duj.). — Oval, campanulate, turgid; 

 sometimes quite pellucid, at others 

 whitish ; mouth ample and gaping ; 

 vacuoles are very large, and fill them- 

 selves with food in an irregular manner. 

 When (says Ehrenberg) the animalcide 

 is quiet, the passage of the food onwards 

 is seen in the serpentine canal, to which 

 the stomachs are attached like benies ; 

 even the stalk or short communicating 

 tube is visible when they receive or dis- 

 charge colom-ed food. The longitudinal 

 rows of cilia are very nimierous in full- 

 grown specimens. The gTanules are 

 white by incident light, brownish by 

 ti'ansmitted. In the middle of the body 

 is a small globular nucleus. Both in 

 fresh- and sea- water. 1-280" to 1-96". 



L. Spathida ( = Enchelys Spathula, 

 M.) (xxiv. 278). — Lanceolate, com- 

 pressed, whitish : mouth narrow, situated 

 at its anterior extremity, which is ob- 

 liquely truncated and membrane-like. 

 Amongst Lenmae. 1-140". Vide Spa- 

 THTDiLTM hyalinum, p. 612. 



L. sanguinea {Triclioda striata, M.) 

 (xxiv. 279, 280).— Cylindrical, rounded 

 at both extremities, and of the colour of 

 blood. Ehrenberg remarked within it 

 two bright contractile romid bladders, 

 and that on seh-di^dsion one was present 

 in each part. 1-144". 



^.pyriformis (Koljjoda Pyrwn, M.). — 



Ovate, whitish, rather more acute ante- 

 riorly ; vacuoles large. 1-570" to 1-280". 



Dujardin considers that this species 

 should rightly be transferred to Glaucoma 

 or Kolpoda. 



L. carnium {Kolpoda Pyrum, M.). — 

 Oval, oblong, acute anteriorly, and of a 

 whitish colom*; vacuoles narrow. In 

 putrescent annual water, and the drain- 

 age of mamne. 1-1440" to 1-430". It 

 = TricJioda Pyrum (Perty). 



Perty suggests that Enchelys nodulosa 

 is referable also to this species. 



L. (?) Anodontcs {Leucophra jlidda, 

 M.). — Oval, tm'gid, and transparent ; 

 roimded at both extremities. In Siberia 

 and at Copenhagen. 1-430". Most pro- 

 bably it is an Opalina. 



L. striata (Duj.). — Oblong, marked by 

 thirty-five longitudinal granular striae. 

 1-325" to 1-200". In the Liimhrici 

 (worms) of gardens. 



This is the only species of Leucophrys 

 retained by Perty. On the other hand, 

 Stein (p. 184) asserts that it is an Opa- 

 lina, a mouthless animalcule, and there- 

 fore rightly excluded from Enchelia. 



L. nodulata (Duj.). — Oblong, regidarly 

 ciliated ; without distinct striae, but hav- 

 ino; two series of vacuoles. In Lumbrici. 



The last three supposed species are, 

 says Stein {Infus. p. 184), Opalince, and 

 the last two should be imited as one, 

 which may be named O. Lumbrici. (See 

 family Opalix^ea, p. 569.) 



Genus SPATHIDIUM (Duj.) (XXYI. 27).— Oblong; thicker and more 

 rounded behind ; thinner, expanded, and truncated in front. 



2v.2 



