362 HIND : CARBONIFEROUS AMMONOIDS NEW TO ENGLISH ROCKS. 
GLYPHIOCERAS COMPLICATUM de Koniiick. 
Ammonites complicatus de Koninck, 1842; Descr. Anim. foss., p. 
507, PL L, fig. 8. 
Goniatites complicatus Bronn, 1848 ; Gesch. d. Natur, Vol. III., p. 541. 
6r. complicatus de Koninck, 1882 ; Ann. Mus. Roy. (V Hist. Nat. 
de Belqique, Vol. V., Fauna Calc. Carb., Pt. II., p. 105, PI. L, 
figs. 4-4c. G. coinplicatum Hyatt, 1884 ; Proc. Boston Soc. Nat. 
Hist., Vol. XXII., p. 329. G. complicatum Foord and Crick, 
1897 ; Cat. Foss. Ceph. Brit. Mus., Pt. III., p. 208, fig. 99. 
Localities. — Castleton and Bradbourne (Derbyshire). 
Observations. — It is unnecessary to re-describe this species as 
Foord and Crick have already done so {op. supra cit.), but no British 
specimen has been figured. The suture line is very distinctive, and 
the camerse are very shallow and numerous. The species is not 
at all common. I noted its occurrence at the above localities in my 
paper on " The Distribution of the British Carboniferous Goniatites." 
Geol. Mag., Dec, VI., Vol. V., p. 443, 1918. 
The angularity of the peripheral lobe shows an affinity to G. 
crenistria. The specimen described by Foord and Crick was obtained 
from Vise (Belgium). 
EXPLANATION OF THE PLATES. 
Plate. 
Fig. 1. — Ghjphioceras inconstans de Koninck. 
Fig. la — Glypliioceras inconstans , in profile. 
Fig. lb. — Glyphioceras inconstans, suture line. 
Fig. 2. — Glyphioceras ohesuiti Foord. 
Fig. 2a. — Glyphioceras ohesuni, suture line. 
Fig. 3. — Glyphioceras corpulentum Crick. 
Fig. 3a. — Glyphioceras corpulentum, in profile. 
Fig. 4. — Glyphioceras complicatum de Konink. 
Fig. 4a. — Glyphioceras complicatum, in profile. 
Fig. ^h.— Glyphioceras complicatum, suture line. 
AU illustrations natural size, except 4b, which i, .-lightly enlarged. 
