IO2 One TJ ions and Objects 



Short and conical, with two styles and two crest-like horns. 

 Amongst Confervas. 



812. LITTLE MONOSTYLA (Monostyla cornuta). Egg- 

 shaped, with a simple foot at the broad end. Enclosed in 

 a transparent shell or lorica. Amongst water-weeds. 

 (PI. X., fig. 13.) 



813. CRESCENT EUCHLANIS (Eitchlanis lima}. En- 

 closed in a cup-shaped lorica, with the mouth curved out 

 in a lunate manner. Amongst Conferva;. 



814. THREE-SIDED EUCHLANIS (Enchlanis triqttetrd). 

 Lorica large and inversely pear-shaped, almost triangular. 



815. SPINY SALPINA (Salpina spinigera). Lorica, or 

 shell, with four front and three posterior horns. Amongst 

 hornwort. (PL X., fig. 17.) 



8 1 6. SKELETON ROTIFER (Dinocharis pocilhtni). Shell, 

 or lorica, nearly cylindrical. Foot long, with three toes. 

 Two spines at the base of the foot. Amongst hornwort. 

 (PL X., fig. 19.) 



817. LONG- TOED SKELETON (Dinocharis tetractis}. 

 With longer toes than the last. Lorica triangular. Amongst 

 duckweed. 



8 1 8. ROUNDED METOPIDIA (Metopidia icpaddld). 

 Lorica nearly flat, broad, and ovate. Rounded behind. 

 Eyes two. Toes longer than the foot. 



819. POINTED METOPIDIA (Metopidia a^uninata). 

 Flattened, ovate, and pointed behind. Amongst Conferva?. 



820. SPINY STEPHANOPS (Stcphanops lamcUaris). 

 Lorica depressed, front expanded in a hood-like manner. 

 Three posterior spines. Amongst Confervas. (PL X., 

 fig. 16.) 



821. SPINELESS STEPHANOPS (Stephanops mnticits). 

 Lorica depressed, with a frontal hood. Without the 

 posterior spines. In standing water. 



822. COMMON ROTIFER (Rotifer riilgaris). Without 

 lorica. Body spindle-shaped. Eyes two. Double wheel 

 or rotatory organ. Common in standing water, &c. (PL 

 X., fig. 20.) 



823. FOUR-HORNED ROTIFER (Noteus quadricornis). 

 Lorica rounded and flattened, with four frontal and two 



