THE WHEEL ANIMALCULES (ROTATORL\) 615 



121 (no) Fixed by the tip of the stalk-Uke foot, or with tubes, or in colonies 

 Secondarily free in a few cases, then distinguishable by the 

 soft elongated body, without lorica or appendages. 



Family Melicertidae . . 122 



122 (130, 133) Individuals attached, separate, or in branching, non-spherical 

 colonies of few specimens (1-30) 123 



123(124,125) Corona four lobed Melicerla Schmnk. 



Two lobes in one species. Living in tubes. Several species. 



Representative species (Fig. 948 and Fig. 866, .1, page 575). 



Melicerta ringcus Schrank. 



124 (123, 125) Corona eight lobed Octotrocha Thorpe. 



Representative species (Fig. 950). . . . Octotrocha spcciosa Thorpe. 



125(123,124) Corona more or less two lobed 126 



126(129) Dorsal antenna minute or absent 127 



127 (128) Corona broad, of two lobes, with a wide dorsal gap. 



Limn'uis Schrank. 



Dorsal antenna minute, ventral antennae long; living in tubes not made with ix-llots. Sev- 

 eral species. 



Representative species (Fig. 949)- • • Limnias ccratophylli Schrank. 



128 (127) Corona a wide oval or nearly circular, indistincUy t^yo lobed. 

 Dorsal gap minute Occistes YMvQnhcig. 



Dorsal antenna inconspicuous or absent. Ventral antennae obvious. Living attached in 

 tubes. Many species. 



Representative species (Fig. 951) Occistcs brcAs Wood. 



