6 Brack, 
VIII. BKACHIOPODA. 
f Cyclospira, n. g., type Orthis bisulcata , Emmons ; Hall & Clarke, t. c. 
p. 146, fig. 
f Cyclorhina, n. g., type Rhynchospira nobilis, Hail ; Hall & Clarke, 
t. c. p. 206, fig. 
f Didymospira, n. subg. of Spiriyera , type S. qiiculriplecta (Miinst.) var. 
confluens , Bittner ; Salomon, Palaeontogr. xlii, p. 81. 
Eiulesia ( Macandrevia ) americana, W. coast S. America, p. 721, craniella , 
p. 722, diamantina , p. 723, Gulf of Panama ; Dall, P. U. S. Mus. 
xvii, figg. : n. spp. 
Frieleia , n. g., for F. halli , n. sp., off W. coast U. S., with notes on its 
anatomy ; Dall, t. c. p. 713. • 
Ilemithyris beecheri , off Hawaiian Is., craneana t Gulf of Panama; Dall, 
t. c. p. 717, figg. : n. spp. 
t Ilustedia, n. g., type Terebratula mormoni , Marcou ; Hall & Clarke, 
Nat. Hist. New York, Palseont. viii, pt. 2, p. 120, fig. 
f Hyattella, n. g., type Atrypa congesta, Conrad ; Hall & Clarke, t. c. 
p. 61, figg. 
j* Metaplasia, n. g., type Spirifer pyxulatus, Hall; Hall & Clarke, t. c. 
p. 56, fig. 
f Orthorhynchula, n. g., type Orthis linneyi , Nettelrotli ; Hall & Clarke, 
t. c. p. 181, fig. 
•fParastrophia, n. g., type Atrypa hemiplicata^ Hall; Hall & Clarke, 
t. c. p. 221, fig. 
f Parazyguy n. g., type Trematospira hirsuta , Hall ; Hall & Clarke, t.c, 
p. 127, fig. 
f Protorhyncha, n. g., type A try pa dubia, Hall; Hall & Clarke, t.c. 
p. 100, fig. 
f Ptychospira, n. g., type Terebratula ferita ) Yon Buch ; Hall & Clarke, 
t. c. p. 112, fig. 
f Puguax, n. subg. of Hypothyris , King ; Hall & Clarke, t. c. p. 202, fig. 
f Rafmesquina lata , Trenton Limestone, Lake Winnipeg; Wiiiteaves, 
Cauad. Rec. vi, p. 392 : n. sp. 
*j ' Rhynchonellina, Gemm., notes on the genus with new species ; Bitt- 
ner, Yerh. geol. Reichsanst. xliv, pp. 547-572, figg. 
f Spirifer , synonymy of species in the Belgian Coblentzian ; BriCLAun, 
Bull. Soc. Beige Geol. ix, pp. 129-240, 5 pis. 
fS. verneuili , note on variations ; Gosselet, Ann. Soc. geol. Nord, xxii, 
p. 119 : f<S. orbelianus , note on ; Gosselet, t. c. p. 123. 
f Syntrophia, n. g., type Triplesia lateralis , Whitfield ; Hall & Clarke, 
Nat. Hist. New York, Paheont. viii, pt. 1 (1891), p. 270, pt. 2 (1894 
[i.e. 1895]), p. 216, fig. 
f Terebratula , forms from the Upper Cretaceous of Ciploy, Belgium, 
with some new species ; Peron, C,R. Ass. Franc. 1894, ii, pp. 453- 
468, figg. 
T. ( Liothyrina ) clarkeana , Gulf of Panama ; Dall, P. U. S. Mus. xvii, 
p. 718, fig. : n. sp. 
•j* Whitfieldella, n. g., type Atrypa nitida, Hall; Hall & Clarke, Nat. 
Hist. New York, Palseont. viii, pt. 2, p. 58, fig. 
