620. 
621. 
EISE OF SPECIES 311 
P. sonorana, Sterki, Nautilus XIII, p. 16; 
Xp. 128. 
var. tenella, Sterki, Nautilus XIII, p. 16; 
Ne 20: 
Genus, bBitiaaria, Sterki 
B. ashmum, Sterki, Nautilus XII, p. 49; 
eG: 
B. perversa, Sterki, Nautilus XII, p. 90. 
B. quadridentata, Sterki, Nautilus XII, p. 
128. 
B. pentadon, Say, Nautilus XIII, p. 16. 
B. hordeacella, Pilsbry, Nautilus XIV, p. 86. 
var. parvidens, Sterki, Nautilus XII, p. 
128. 
B. armifera, Say, Nautilus VI, p. 4; XIV, 
p. 86. 
var. ruidosensis, Ckll., Nautilus XIII, p. 
36. 
Genus, vertigo, Muller 
V. ovata, Say, Nautilus V, p. 92. 
V. ventricosa, Morse, U. S. N. M. XIX, p. 
BOG. 
V. tridentata, Wolf, U.S. N. M. XIX, p. 367. 
V. simplex, Gould, Nautilus V, p. 92; LX, p. 
102. 
V. binneyana, Sterki, Nautilus IX, p. 102. 
V. castanea, Sterki, Nautilus VI, p. 5. 
V. borealis, Mor., Nautilus VI, p. 5. 
V. columbiana, Sterki, Nautilus VI, p. 5. 
var. utahensis, Sterki, Nautilus VI, p. 5. 
V. concinnula, Ckll., Nautilus XVI, p. 58. 
V. coloradoensis, Ckll., Nautilus XVI, p. 58. 
