UOLOPTYCHIim®. 
337 
P. 545. Imperfect right mandibular ramus, inner aspect, forming 
the type specimen described and figured by Agassiz, 
loc. cit.; Orkney. Egerton Coll. 
P. 182. Imperfectly preserved head and trunk of a somewhat 
smaller individual, ventral aspect, in counterpart; Caith¬ 
ness. The ornamentation of the scales is especially well 
shown. Purchased, 1881. 
P. 5934. A somewhat larger individual, ventral aspect, with 
portions of the median fins, but exhibiting only the inner 
surface of the scales ; Achanarras, Caithness. 
Purchased, 1889. 
33169. Fragment of squamation; Thurso. Purchased , 1857. 
42401. Scale, abraded, but showing ornamentation; Castlehill, 
Caithness. Peach Coll. 
Detached scales, not represented in the Collection, are also named 
thus:— 
Glyptolepis benedeni, M. Lohest, Ann. Soc. Geol. Belg, vol. xv. 
(1888), p. 150, pi. ix. figs. 3-5, pi. x. figs. 1, 2.—Upper 
Devonian ; Belgium. [M. Lohest Collection, Liege.] 
Glyptolepis radians, M. Lohest, ibid. p. 151, pi. ix. figs. 1, 2.— 
Upper Devonian ; Belgium. [M. Lohest Collection.] 
The supposed species, named as follows, are founded upon doubtful 
fragmentary evidence :— 
Glyptolepis orbis , E. von Eichwald, Bull. Soc. Imp. Nat. Moscou, 
vol. xvii. (1844), p. 832, and Leth. Bossica, vol. i. (1860), 
p. 1568, pi. lvi. fig. 6, pi. lvii. fig. 22.—Devonian; NVW\ 
Russia. [Fragment of jaw and scales; University of 
St. Petersburg.] 
Glyptolepis quadrata, E. von Eichwald, ibid. (1844), p. 832, and 
ibid. (1860), p. 1569.—Devonian ; Marjina, B. Slawjanka. 
[Scales; University of St. Petersburg.] 
— Sclerolepis decorata , E. von Eichwald, ibid. (1844), p. 828, and 
vol. xix. (1846), pt. ii. p. 299, pi. x. figs. 16, 17, and 
Leth. Itossica, vol. i. (1860), p. 1570, pi. lvii. fig. 7.—Devo¬ 
nian; Marjina. [Scales in University of St. Petersburg, 
assigned to Glyptolepis by C. H. Pander, Saurodipt., Den- 
drodont. &c. devon. Syst. (1860), p. 63.] 
The detached large teeth of the Dendrodont Crossopterygians 
paet n. 
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