38 SYNOPSIS OF AMERICAN FOSSIL BRACHIOPODA. [bull. 87. 



Tahle Y. — Silurian Brachiopoda — Continued. 



Species. 



Homoeospira aprinifonni.s Hall 



Homcpospira e vax Hall 



HouKKospira sobrina (Beecber and Clarke) .. 



Hyattella congesta (Conrad) 



Hyatella junia (Billings) 



1 * Leptaena rboniboidalis ("Wilckens) 



Lingulaacutirostra Hall 



Liugula bicarinata Ringueberg 



Lingula clintoni Vanuxem 



Lingula cuneata Conrad 



Lingula gibbosa Hall 



Lingula ingens Spencer 



Lingula insularis Billings 



Lingula lamellata Hall 



Lingula linguata Hall and Clarke 



Lingula oblata HaU 



Lingula subelliptica d'Orbign j- 



Lingula taeniola Hall and Clarke 



Lingulops granti Hall and Clarke 



Meristina maria Hall 



Meristina rectirostra Hall 



Meristina trisinuata (McCbesney) 



Mimulus waldronensis (Miller and Dyer) . . . . 



Monomorella egani Hall and Clarke 



Mononiorella greenii Hall and Clarke 



Monomorella kingi Hall and Clarke 



Monomorella newberryi Hall and "Whitfield. 



Monomorella orbicularis Billings 



Mouomorella ortoni Hall and Clarke 



Monomorella ovata Whiteaves 



Monomorella ovata lata "Whiteaves 



Monomorella prisca Billings 



* Nucleospira elegans Hall 



Nucleospira pisiformis Hall 



Nucleosplra rotundata Whitfield 



Orbiculoidea numulus Hall and Clarke 



Orbiculoidea parmulata Hall 



Orbiculoidea subplana (Hall) 



Orbiculoidea vanuxemi (Hall) 



Ortbis benedicti Miller 



Orthia davidsoni de Verneuil 



Orthis (?) fis8iplica Roemer 



Ortbis flabellites (Hall) Foerste 



Orthis flabellites spania Hall and Clarke 



Ortbis ( 

 Ortbis ( 

 Orthis ( 

 Orthis ( 

 Ortbis ( 

 Ortbis ( 

 Ortbis ( 

 Orthis ( 



Eo- 

 silurian. 



Mesosilurian. 



Medina. 



Anti- 



costi, 



Clinton. 



X I. 



) glypta Hall and Clarke 



) missouriensis Shumard 



) nisis Hall and "Whitfield 



) punctostriata Hall 



) rugiplicata Hall and "Whitfield. 



) ruida Billings 



) subnodosa Hall 



) tenuidens Hall 



CI 

 A 

 CI 

 CI 



CI 



CI 

 CI 

 CI 

 CI 



CI 



CI 



N 

 N 

 N 



N 



N 



N 

 N 



N 



K 



N 



K 



N 



Gu 



K" 



Gu 



Gu 



Gu 



N 



N 



Ar 

 Ar 



N 

 N 

 N 



N 



N 



N ? 



N 



N 

 N 



N 



Neosi- 

 luriau. 



JNiagara. j.^^^ 



