158 
ICHTHYODORULITES. 
48025. Typical specimen ; Airdrie, Lanarkshire. Purchased, 1 874. 
P. 443. Broken specimen; Newsham, Newcastle-upon-Tyne. 
Presented by T. P. BcirTcas , Esq., 1882. 
The following species has also been described, but there are no 
examples in the Collection :—- 
Euctenius elegcins , R. H. Traquair, Geol. Mag. [2] vol. viii. (1881), 
pp. 36, 334 : ‘ KammplattenJ T. Stock, Ann. Mag. Nat. 
Hist. [5] vol. viii. (1881), p. 90.—Middle Carboniferous 
Limestone (Black-band Ironstone); Borough Lee, near 
Edinburgh. [R. H. Traquair Collection.] 
The genus has also been recorded from the Coal-Measures of 
Linton, Ohio, where tine groups of this small ichthyodorulite occur. 
See J. S. Newberry, Palaeoz. Fishes N. America (Mon. TJ.S. Geol. 
Surv. no. xvi. 1889), p. 228. 
A supposed Elasmobranch fish, from the Kupferschiefer of Thu¬ 
ringia, is also described as exhibiting several pairs of slender spines 
in the region of the head (C. Giebel, Zeitschr. gesammt. Naturw. 
1856, p. 367, pis. iii., iv.). 
Two undetermined Ichthyodorulites have been named, without 
description, as follows :— 
Cricacanthus jonesi, L. Agassiz, Poiss. Eoss. vol. iii. (1843), p. 176 
(name only).—Lower Carboniferous Limestone ; Armagh. 
Gyropristis obliquus , L. Agassiz, ibid. p. 177 (name only); W. Ring, 
Permian Eoss. (Pal. Soc. 1850), p. 222.—(?) Permian; 
Belfast. 
INCERT2E SEDIS. 
Fragments of dermal armour, for the most part pertaining to un¬ 
known primitive types of fishes, from the Upper Silurian of the Is¬ 
land of Oesel,Baltic Sea, are described by C. H. Pander (Monographie 
der fossilen Fische des Silurischen Systems der russisch-baltischen 
Gouvernements, 1856) under the following names:— 
Coccopeltus asmusi, Pander, op. cit. p. 50, pi. v. fig. 1. 
Cypliomalepis egertoni , Pander, ibid. p. 51, pi. v. fig. 3. 
Dcisyleqyis Tceyserlingi , Pander, ibid. p. 54, pi. v. fig. 6. 
Bictyolepis bronni , Pander, ibid. p. 56, pi. v. fig. 5, pi. vi. fig. 14. 
Lopkolepis schmidti, Pander, ibid. p. 55, pi. v. fig. 4. 
Melittomcdepis elegcins, Pander, ibid. p. 60, pi. v. fig. 8. 
Oniscolepis magnet , O. dentcita, O. serrcita , and O. crenulata , 
Pander, ibid. pp. 58, 59, pi. vi. figs. 32-35. 
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