1870. ] TATE—GLOUCESTERSHIRE LIAS. 403 
It occurs in the zones of Am. raricostatus, Cheltenham; Am. 
Jameson, Aston (Slatter) ; and Am. margaritatus, Dumbleton! ; 
and on the Continent it is quoted from the zone of Am. Buckland, 
Fleigneux. 
B.—From the lower zones of the Middle Lias. 
TURBO ADMIRANDUS, nov.sp. (Pl. XXVI. fig. 10.) 
Shell small, heliciform, a little broader than high; spire short, 
with an obtuse apex composed of four inflated whorls, the superior 
of which are angulated and ornamented above by curved plications, 
which extend a little over the keel, and are crossed by longitudinal 
costellee, the remaining portion cancellated and nodulose ; the last 
whorl slightly inflated and subangular; base radiately costulate ; 
peristome entire, thickened, and channelled anteriorly ; aperture 
circular ; umbilicus of moderate size and round. 
Dimensions. Length 0:23 inch ; diameter 0-22 inch ; height of last 
whorl 0:17 inch. 
Localities. Lone of Ammonites Jamesoni: Cheltenham (Tate, Buck- 
man); Aston Magna (Slatter); ? Campden (Brodie). 
Trocuus Tuetis, Minster, Goldfuss, t. 179. f.10*. (Pl. XXVI. 
fig. 4.) 
Turbo heliciformis, Quenstedt, Jura, t. 19. f. 25*, 
Shell small, conical, spire elevated ; apex acute, composed of 4-5 
flat whorls, separated by a channelled suture; last whorl biangulated; 
upper surface ornamented with about twenty-four thick nearly 
straight coste, which terminate in a subspinous tubercle on the 
elevated upper carina. In some examples the transverse ribs are 
terminated superiorly and inferiorly by tubercles. From the tuber- 
culated rim of the upper keel proceed fine closely set curved striz, 
which are continued on to the base of the shell. Base nearly flat, 
with four concentric ribs ; columella oblique, with a callous expan- 
sion oyer the umbilical fissure ; aperture oblique. 
Dimensions. Length and breadth 0-20 inch. 
Affinity. T. Thetis is closely related by its ornamentation and 
figure to 7’. Doris, Minster, Goldfuss, t. 179. f. 9, from the Lias 
of Pretzfeld, placed by D’Orbigny in the Toarcien, but cited by 
Dumortier from the zone of Ammonites angulatus in the South of 
France; it differs from that species in its biangulated last whorl 
and in haying two rows of tubercles and not three; other minute 
differences are observable. 
Distribution. Zone of Ammonites Jamesoni: Cheltenham (Tate, 
Buckman); Aston Magna (Slatter). Zone of Am. margaritatus, 
Hechinger (Quenstedt); Amberg (Goldfuss); St. Bonnet, Rhone 
(Dumortier). 
EXeErissa NumismMauis, Tate, Annals and Mag. Nat. Hist. Dec. 1869. 
(Pl. XXVI. fig. 5.) 
* Figures represent casts only. 
