COCCOSTEIDJE. 
311 
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chison, K.C.B., about 1846, and entered under the general number 
15142. Five are figured by Agassiz (Poiss. Foss. V. G. R. pi. xxxii. 
figs. 3-6, 14), and a few are regarded by the same author (ibid. 
p. 94) as referable to Asterolepis minor. Two are of the form 
named Trionyx sulcatus , S. Kutorga, Beitr. Geogn. u. Palaont. 
Dorpat’s, ii. (1837), p. 13, pi. ii. figs. 1-4, and resemble the speci¬ 
men from the Lower Old Red Sandstone of Thurso determined as 
“ Shoulder (i. e. coracoid ?) plate of Asterolepis ” by Hugh Miller, 
“Footprints of Creator” (1849), p. 88, woodc. fig. 38. 
A single slab of Cleveland Shale (Lower Carboniferous), dis¬ 
covered by Dr. William Clark in the bank of the Rocky River, 
below Berea, Ohio, and now in the Museum of Columbia College, 
Hew York, seems to pertain to a genus of Coccosteidae distinct from 
all described above. The fish is characterized by very slender, pro¬ 
minently denticulated mandibular bones, a ring of four sclerotic (?) 
plates, and a scute-ornament of large, high, conical tubercles. It 
is named Trachosteus cl arid, J. S. Newberry, Palseoz. Fishes N. 
America (Mon. TJ.S. Geol. Surv. no. xvi. 1889), p. 167, pi. xlii. 
figs. 1-8. 
Other large detached dermal plates, perhaps for the most part 
referable to this family, are also described as follows:— - 5 
Aspidichthys , J. S. Newberry, Rep. Geol. Surv. Ohio, vol. i. pt. ii. £■*>'- v - - •- 
(1873), p. 322, with the type species, A. clavatus , Newberry, ibid.^^p'* v d - 
p. 323, pi. xxxv. figs. 1, 2, from the Huron Shale (Upper Devonian)' • f 1 : 'J 
of Delaware, Ohio. [Columbia College, New York.] Also A. ? in- 
A. von Koenen, Abh. phys. Cl. k. Ges. Wiss. Gottingen, vol. <A/sc> Torrt.c/L 
, A^x. (1883), p. 34, pi. iii. fig. 1, pi. iv. fig. 4, from the Upp er Y ^ 9 Xt- 
?' ^ eyon i an Martenberg, near Adorf, and Charlottenzug, near p+^ ^/dri f, 
Bredelar, N. Germany {Royal Geological Museum, Gottingen]; and 
• f A 
. ^ perhaps the so-called Coccosteas fritschi, Barrande (see p. 294) 
Anomalichthysp A.~v6li Ko^Keh^Abh. phys. Cl. k. Ges. Wiss. <£L va ^ 
v Gottingen, vol. xxx. (1883), p. 38, with the type species, A. seabed, ’■ 
A. von Koenen, ibid. p. 38, pi. iii. fig. 2, from the Upper Devonian *' 
of Martenberg, near Adorf. [Royal Geological Museum, Gottingen.] 
Drepanaspis, C. Schliiter, Sitzungsb. niederrhein. Ges. Bonn', 
1887, p. 126, with the type species, D. gemiiendenensis, SAluter, 
ibid. p. 126.—Lower Devonian; Gemiinden, Eifel. [Bonn Univer- 
sity Museum.] a„. ^ 7 JA9Ts/u°. 
Glyptaspis , J. S. Newberry, Palaeoz. Fishes N. America (1889), 
p. 157, with the type species, G. verrucosa , Newberry, ibid. p. 158, \ g /? 
pi. xiii. figs. 1, 2, from the Cleveland Shale (Lower Carboniferous) £' 
of Ohio. [Columbia College, New York.] 
, 
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^ ^ ^ 
Lophostracon spitzbergense , E. R. Lankester, Kongl. Svenska ' 
AJ.dps-yy?, tf'ST, 2 4 , &}'**£**+* * 
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