104 REUETIC AND LIAS SPECIES. 
Lower. 
Middle. 
Upper. 
SPECIES. 
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REMAKES. 
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Ammonites emit. 
radians deprcssus, 
Quenst., v. Am. stria- 
tulus. 
radiatus, Simp., v. Am. 
impendens. 
raquinianus, d'Orb., v. 
Am. crassus. 
raricostatus, Ziet., 
T 
in 
Petref. Wurt., pi. xiii., f. 
4 ; (JSgoceras ?) T. & B., 
i 
i 
s 
p. 276 ; (Arietites) Wr., 
Lias Am., p. 298, pi. vii., 
f. 2-6 ; pi. xxvi., f. 5-14 ; 
i 
? Am. exortus, Simp., p. 
73. 
redcarensis, Y. & B., v. 
Am. angulatus. 
Regndrdi, d'Orb., v. Am. 
Jamesoni. 
resupinatus, Simp., v. 
Am. sauzeanus. 
retentus, Simp., v. Am. 
Huntoni. 
reticularis, Simp., v. Am. 
lenticularis. 
retusus, Simp., v. Am. 
aculeatus. 
' 
Ripleyi, Simp., v. Am, 
trivialis. 
Robinsoni, Simp., v. Am. 
oxynotus. 
rotiformis, Sow, M. C., 
t.4',2; (Arietites) T. & 
T? 
Single specimen, Leek. 
Coll. 
B., p. 286; Wr., Lias 
Am., p. 278, pi. v., f. 1-4 ; 
rudis, Simp., Mon, Am., 
p. 44 ; (Harpoceras)i 
T. & B^ p. 310. 
T? 
This resembles Am. 
comensis. 
rugatulus, Simp., v. Am. 
aalensis. 
rutilans, Simp., v. Am. 
trivialis. 

Scemanni, Oppel v. Am. 
latescens. 
Sagittarius, Blake 
T 
s 
Near to Am. Jamesoni. 
(jEgoceras) T. & B., 
p. 276, pi. vii., f. 2; "Wr., 
Jm 
Lias Am., p. 355, pi. lii., 
i 
f. 1-5, lii. A, f. 1-6; Am. 
Jamesoni (pars) Sow. 
& Simp. 
