54 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Body funnel-shaped to ovate, peristome inclosing an- 

 terior end and surrounded by ciliated zone. . .Stentor* 



5. Lorica tubular, gelatinous Tintinnidium 



Lorica various, chitinous Tintinnus 



Description of Genera. 



Blepharisma Perty. 



Much flattened ; anterior end acute, somewhat hook- 

 like, and bent to the left. Peristome a deep furrow close 

 to the left-hand border in front, and extending to the mid- 

 dle of the body, where is found a short, slightly bent 

 pharynx. On left wall of peristome is a row of strong 

 membranellffi, but upon its right side an undulating mem- 

 brane. Body spirally striate. , 



Bl. sp. (?), Fig. 216. 



Bl. undiilans (?), Fig. 217, 



Bl. ovata (Apgaria of Stokes), Fig. 218. 



Bl. sp. (?), Fig. 228. 

 Condylostoma Duj. 



Sometimes contractile, sometimes not, with a body 

 either elongated or rounded. Peristome extending one- 

 third of the distance behind the anterior end. Mouth 

 broad, pharynx slightly developed. An evident undulat- 

 ing membrane on right side of peristome. Nucleus bead- 

 like on the right side. Contractile vacuole and anus ter- 

 minal. 



Con. sp. ( ?) , Fig. 220. The identification of this animal is 

 doubtful. 

 Metopus CI. & L. 



Cylindrical, somewhat acute at both ends. Peristome 

 a long furrow extending from the left anterior end. in a 

 spiral direction, to the mouth, which lies near the middle 

 of the ventral side. Pharynx short. Anterior end of 

 body bent toward the ventral surface and toward the left 

 so that the anterior portion of the peristome is covered. 

 On left side of peristome is a row of membranellc-e. On 

 right side an undulating- membrane. Striations regular ; 

 ciliation uniform, but with a tuft of longer cilia on the an- 

 terior and posterior ends. Nucleus cylindrical, with a 



