1880.] 



MICROSCOPICAL JOURNAL. 



133 



physiological researclies usually 

 performed without its aid, and in 

 most cases supplement such labors. 

 3. Particularly in medico-legal 

 investigations has the microscope 

 been too little used. Elaborate 



chemical manipulations have been 

 relied upon almost exclusively. It 

 is of greater use in this connection 

 than merely in the blood-globules 

 and spermatic fluid examinations, to 

 which it has been principally applied. 



III. Family Cryptomonadina (with Thecomonadina, Duj., P'ty). 



Body clothed with a stiff membrane or a hard carapace, therefore of constant 

 form, green, containing chlorophyll, or colorless. 

 Body flat, carapace soft, membranous 

 leaf-shaped, with pigment-spot and 



tail-like appendage, Phacus. 



oval, more or less emarginate in front, 



two similar, moving flagella, Cryptomonas. 



one moving and one trailing flagellum, Anisonema. 



four flagella, Tetraselmis. 



Body ovoid or spherical, carapace at first soft, later hard, brittle (Thecomonadina), 



without a neck-like appendage, 

 with a neck-like appendage, 



1. Genus Phacus^ Nitsch. {Eu- 

 glena, Ehr.) Body plano-convex, 

 spirally striped, with a longitudinal 

 furrow above, a red pigment spot 

 in front, with a short unsymmetrical 

 tail behind. 



P. pleuronectes^ K. Body much 

 resembling a sole-fish. Turns about 

 the longitudinal axis while swim- 

 ming, but is generally still. L. 0.05. 

 Common, particularly in turf -water. 



According to Claperede's obser- 

 vations, brood-cells are formed, as 

 in Chlorogonium. 



P. triqiietra, K. Body with an 

 elevated keel. L. 0.04. Among 

 algse, not common. 



P.pyiniin, N. {Lejoocinclis^ P'tj)- 

 Body pear-shaped, with strong, 

 spiral furrows. L. 0.03. Among 

 algse, characese, etc. Not abundant. 



2. Gen. Cryptomonas, Ehr. Body 

 oval, smooth or angular, in front 

 somewhat emarginate laterally. 

 Usually without pigment spot, (with 

 pigment-spot, Oryptoglena^ Ehr.) 

 and with two longer or shorter fla- 

 gella, rounded behind, conical or 

 tapering behind. 



C. Polyinorjpha, P'ty {C. cur- 

 vata, ovata, erosa cylindrica, glau- 

 ca,furGa, Ehr.). Form various, color 



Trypomonas. 

 Lagenella. 



grass-green, yellowish, brown or 

 colorless (var. hyalina, ^'^.y)? then 

 generally filled with bluish grains. 

 (Possibly this is identical with Chi- 

 lomonas parannecmm^ Ehr.) The 

 larger, grass-green forms usually 

 have a large and a small nucleus 

 (nucleus and nucleolus '*■) L. O.Ol- 

 0.02. Movement usually slow, bend- 

 ing and turning. Yery common in 

 fresh and old water, the colorless 

 particularly so in infusions, also in 

 Winter. 



With perfect right, Perty has 

 united all these forms in spite of 

 their differences, for all possible 

 gradations between them are found. 

 I have only found the variety hya- 

 lina quite constant, possibly this is 

 a distinct species. 



3. Gen. Anisonema, Duj. Body 

 oval, flat, colorless, with two fla- 

 gella in front, one lashing, the other 

 trailing. The latter often becomes 

 attached, the animal then jerks 

 upon it and often suddenly parts. 



A. acinus, Duj. Body shaped 

 like an apple seed, flagella on tlie 

 end, movement forward in a straight 

 line. L. 0.02-0.03. In stagnant 

 water (comp. Ileteromita ovata.) 



A. sulcata, Ehr. Body with a 



