Euchlaniduia.'] INFUSORIAL ANIMALCULES. 657 



angles ; foot furnislicd with two pairs of bristles ; toes spindle-shaped. 

 Lorica l-80th. 



EucHLANis pyriformis. — Outline of body (viewed dorsally) nearly 

 oval, with a slight constriction in the middle ; Lnica divided 

 longitudinally along the ventral surface, the gape widening anteriorly ; 

 toes parallel, edged; eye minute. Lorica l-62nd. 



E. hipjiosideros. — Body nearly oval in outline; the venti-al side flat ; 

 the dorsal greatly arched, and ridged doA\'n the middle ; lorica formed 

 of two distinct plates ; the dorsal plate enveloping the back and half 

 down the sides ; the ventral separated from it by a wide space, and 

 hollowed in the middle, so as to present the figure of a narrow horse- 

 shoe, whose points are forwards ; foot armed with one pair of bristles. 

 Lorica 1-11 0th. 



Genus Salpina. — The Stock- fish Rotatoria. — Eye single, cervical ; 

 foot furcate ; lorica closed below, and terminated by spine-like pro- 

 cesses or teeth. " The lorica,'' says Dr. Ehrenberg, " resembles a 

 three-sided little casket, with arched sides, fiat below, and ha\ing, 

 anteriorly and posteriorly, at the truncated extremities, little 

 points." The animalcule can entirely withdraw itself within the 

 lorica. All the species have an elevated ridge upon the back, which 

 in two species appears to be double. (Ehrenberg is somewhat inclined 

 to think the lorica is open, its whole length, upon the dorsal surface.) 

 A compound rotatory organ, two short anterior lateral, and two foot 

 muscles, in S. mucronafa, are seen, as locomotive agents. An oeso- 

 phageal head, with three or four toothed jaws, a short oesophagus, 

 aud a simple conical alimentary canal, exist in all the species ; in 

 five species the conical intestine has two spherical glands. The ovarium 

 is distinct. A respiratory spur or tube is observed at the neck in 

 three species ; the red eye in connexion with a cerebral ganglion is 

 always present. They do not increase in large masses. 



S. mucronata {Brochionus mucronatus, M.) — Lorica veiy minutely 

 scabrous, anteriorly four and posteriorly three-horned ; horns gene- 

 rally straight and of equal length. The lorica, when the creature 

 is young, is soft and bent, but soon hardens, and produces horns. 

 The spur, or respiratory tube, in the neck, terminates in a little 

 bristle, as seen in fig. 450. , In some specimens, Ehrenberg says, 

 thelorica appears as if punctate or stippled. Eigs. 447, 448, repre- 



