in der Naturgeschichte der Protozoen im Jahre 1888. 287 



entirely ciliate pharyngeal passage; 1 or more fine, hair-like setae 

 projecting from the posterior extremity of the body, and a single 

 series of flexible, setose cilia extending transversely and obliquely 

 across the anterior, right-hand lateral and ventral borders from the 

 margin of the oral apertnre to the margin of the dorsal surface; 

 nucleiis ovate; contractile vesicle single; anal apertnre posteriorly 

 situated. Trichocysts present.) m. D. pelagia St. 85, D. centralis 

 St. 85; Fam. Trachelophyllidae S. K.: Trachelophyllum tachy- 

 hJastum St. 84, T. davatvm St. 86, T. vestitum St. 84, Urotricha 

 platysitoma St. 86; Fam. Colepidae Ehr.: Coleps hirtus; Fam. 

 Enchelyidae S. K.: Perispira strephosoma St. 86, Colpoda depressa 

 St. 86, Tillina hella St. 85, T. ß.uvlcuns St. 85, T. campyla St. 86, 

 T. saprophila St. 84, T. inflata St. 84/85; Fam. Trachelocercidae 

 S. K.: Trachelocerca olor Müll., Lacrymaria vertrens St. 85, L. teres 

 St. 86, L. truncata St. 85, Lagynus lasius St. 85; Fam. Trache- 

 liidae Ehr.: Trachelius ovum Ehr., Amphileptus gigas C. und L., 

 A. margaritifer Ehr., A. vionilatv.s St. ^^^ Loxophylliim vorax St. 86, 

 h. flexilis St. 85, Fam. Ophryoglenidae S. K.: Ophryoglena ovata 

 St. 85, gen. DaUasia St. 86 (free-swimm., elongate-ovate, sub- 

 cylindrical, produced posteriorly in a more or less retractile tail- 

 like Prolongation; oral apertnre ventral, enclosing 2 vibratile mem- 

 branes; contractile vesicle 1, trichocysts absent.) m. D. frontata 

 St. 86, Hymenostoma St. 84 (free-swimm., ovate, persistant in form, 

 more or less depressed, entirely ciliate, a fascicle of several diverse, 

 flexible, setose cilia projecting porteriorly; adoral groove large, 

 ventrally disposed, somewhat on the right-hand side of the median 

 line, bearing on its left-hand margin a row of vibratile cilia, and on 

 its right-hand and frontal borders a vibratile membrane ; oral aper- 

 tnre ovate, situated at the posterior and deepest part of the adoral 

 depression, and bearing an extensile and retractile membrane on its 

 anterior and left-hand margins; contract. vesicles 2, nucleus posteri- 

 orly located; anal aperture postero-terminal) m. hymenophora St. 84, 

 H. magjui St. 87, Colpidium cucullulus Sehr,, C. pvtrimim St. 86, C. 

 tnmeahnn St. 85, C. striatum. St. 86, gen. Histiobulantium St. 86 

 (free-swimm., ovate, somewhat depressed, persist. in shape, ventral 

 aspect flattened; setose hairs abundantly developed on all parts 

 of the surface; oral fossa near the centre of the ventral aspect, on 

 the left-hand side of the median line, ovate, capacious, the cilia of 

 the left-hand border long, fine, setose, the frontal wall bearing a 

 ciliary tuft, and the right-hand margin supporting an undulating 

 membrane, which forms posteriorly a freely motile infundibuliform 

 sack, continued backward as a narrow membraneous tubulär passage, 

 at the posterior extremity of which is the oral aperture, the oral 

 fossa also enclosing anteriorly a secondary vibratile tuft of long 

 cilia; contractile vesicle multiple; nucleus ovate, anteriorly situated.) 

 m. agile St. 86; Fam. Calyptotrichidae St.: gen. Saprop hih/s 

 St. 87 (free-swimm., ovate, soft, flexible and changeable in form; 

 general cuticular surface clothed with fine vibratile cilia, a single 



