236 THOS. H. MONTGOMERY, JR. 



i, 2. Cilia limited to the knobs of the lobes. 

 /, I. Cilia longer than the whole animal, extensile and 



very mobile mira Hudson (1885). 



j, 2. Cilia not longer than the trunk, not clearly mobile. 

 k, I. Foot three times the length of the body (coronal 

 lobes very short ; 2 eyes)...fyclops Cubitt (1871 ). 

 k, 2. Foot barely twice the length of the body (coronal 

 lobes well developed ; no eyes). 



ornata Ehrenberg (1830). 

 //, 2. Lobes not knobbed. 



i, I. Dorsal lobe overarching the corona so that its cilia point 

 towards the foot (cilia non-vibratile, long). 



torquilobata Thorpe (1891). 

 ?',' 2. Dorsal lobe not overarching the corona. 

 _/, I. Cilia shorter than the corona, vibratile (cilia limited 

 to the lobes ; lateral lobes very small ; the others 

 somewhat triangular ; corona usually less than half 

 as long as the trunk ; peduncle very short). 



conklini nov. spec.' 

 ;', 2. Cilia longer than the corona, non-vibratile. 



k, I. All five lobes distinct (corona as large as the trunk 

 with cilia on its whole margin ; peduncle long). 

 cawpanulata Dobie (1849). 

 k, 2. Lateral lobes small and indistinct. 



/, I. Corona not ornamented with dots, tube distinct 

 (germarium elongate, extending down the left 

 side and across the whole diameter of the 



venter) ambigiia Hudson (1883). 



/, 2. Corona ornamented with dots in symmetrical pat- 

 terns, apparently no tube (living within an 



algal growth) algicola Hudson (1886). 



b, 6. Corona with 7 lobes. 



c, I. Lobes not knobbed (long cilia around the whole margin of the corona). 



diadema Petr (1891). 

 c, 2. Lobes knobbed (cilia restricted to these knobs ; 2 eyes). 



recalls Hudson (1883). 



