NEBELA. 23 



Nebeld ansdta. SYN. : Difflugia (Nebeld) ansata, N. ansata, 

 Leidy. 



Shell compressed pyriform, with a pair of lateral, coni- 

 cal offsets or spurs diverging upward from the neck, but 

 otherwise like N. collaris. Size : length, 216/* to 260// ; 

 breadth, between ends of lateral horns, 132//to 164//, at 

 the fundus, 104// to 120/^; thickness, 60// to 64// ; mouth, 

 40// to 52/H by 2fyu. 



Hob. Sphagnum of cedar swamp. 



Nebela barbata. SYN. : Difflugia (Nebeld) barbata, N. barbata, 

 Leidy. 



Shell bottle-form, slightly compressed, with cylindroid 

 neck about as long as the ovoidal body ; fundus obtuse, 

 oval end slightly expanded, convex downward in the 

 longer diameter ; transparent, colorless, composed of 

 circular disks and provided with short, stiff cils, which 

 apparently project from the spaces between the disks ; 

 mouth oval, entire. Size : length, 80^ to 120// ; breadth, 

 4Afjt to 56/j. ; thickness, 36// to IS/j. ; mouth, 16/* to 24// wide. 



Hob. Sphagnum of cedar swamp. 



Nebela caudata. 



Shell compressed ovoid, with four or five hollow, nar- 

 row, blunt, conical or clavate processes projecting from 

 the lateral borders, and summit of the fundus. Mouth 

 transversely oval, convex downward. 



Shell transparent, colorless, in structure resembling 

 JIT. eollarisj but usually less distinct. Sarcode colorless. 

 Eare. Length, exclusive of processes, 80//; breadth, 

 60// ; thickness, 32// ; mouth, 20/* by 16// ; length of 

 processes, 16 p. to 



