30G 
SELACIIII. 
Ihjhodas Jltloni, W. Bunker, Nordd. Woaldeiibild. (184(5), p. 07, 
pi. xiii. fig. 34. — Wcalden ; N. (Icrmany. 
Jli/hodus furcatostriatiis, K. Martin, Zeitschr. deutsch. gcol. <jes. 
vol. xxvi. (1874), p. 819, pi. xxix. figs. 3, 4. — llhrotic ; 
Ilildeskeim, Hanover. 
Hijhodus hexMjonus, G. von Miinstor, o^. cii. iv. (1841), p. 141, 
pi. xvi. fig. 10. — Trias; S.E. Tyrol. 
llyhodus laviusctdus, L. Agassiz, tom. cit. p. 40, pi. x. figs. 24-20 ; 
(? ) II. von Mcyor & T. Plieninger, Beitr. Pul. W iirttonibergs 
(1844), p. 108, pi. xii. fig. 07. — llbiotic ; Aust Cliffi 
Bristol, and (?) Wiirtcmborg. Memacanthus.'j 
llyhodus leptodm, L. Agassiz, tom. cit. p. 44, pi. x. figs. ' 
Form, and loc. unknown. 
llyhodus pliiodus, L. Agassiz, tom. cit. p. 45, pi. x. figs. 13-1 1 
Form, and loc. unknown. 
llyhodus punctatus, J. W. Bavis, Quart. Journ. Geol. Soc. vol. 
xxxvii. (1881), p. 417, pi. xxii. fig. 2. — lUuetic; Aust 
Cliff, Bristol. 
Leiacanthus falcatus, L. Agassiz, tom. cit. p. 55, pi. viii. fiS- 1®' 
— Muschelkalk ; I.undville, E. France. 
Lnaciinthus (llyhodus) o^xttoivitznnus, U. von Moyer, Palieoutogr. 
vol. i. (1849), p. 221, pi. xxx. fig. 1. — Muschelkalk; 
Silesia. 
Leiacanthus (llyhodus) tarnowitzanvs, II. von Mcyor, tom, 
p. 221, pi. xxx. fig. 2. — Muschelkalk ; Silesia. 
The so-called llyhodus panderi (E. von Eichwald, Leth. Kossica, 
vol. i. 1800, p. 1003), from the Carboniferous Limestone of the 
Government of Toula, Russia, is founded upon a spine probably of 
Ctenacanthus. 
A small cephalic dermal spine (Spdienonchus) from the Trias of 
Wurtemberg, now in the Stuttgart Museum, is named Ceratodus 
heteromorphns, L. Agassiz, Poiss. Foss. vol. iii. (1838), p. 
pi. xviii. fig. 32. Other spines arc figured under the same name by 
F. A. Quenstedt, Handb. Potrefakt., 3rd edit. (1883), p. 298, pi- 
xxiv. figs. 9-13. 
Some similar spines from the llhaetic Bone-bed of Aust Cliff, near 
Bristol, arc named Sphenomdius (llyhodus) ohtusus, J. W. Bavis, 
Quart. Journ. Geol. 8oo. vol. xxxvii. (1881), p. 420, ^d. xxii. fig- 
See also T. Webster, Trans. Geol. Soc. [2] vol. ii. p. 35, ph ''"I- 
fig- (** Tooth of fish ”), where a Wealdcm example is noticed. 
“ SpJienonchus” is also recorded from the Lias of Weston, near 
Bath (ilag. Nat. Hist. n. s. vol. iii. p. 282), and the Wcalden of 
■ Sandown, Isle of Wight (ibid. p. 279). 
