498 
ACTESTOPTEKrGII. 
posterior margin finely serrated. Scale-ornament consisting of 
delicate, subparallel striae, oblique and gently sigmoidal, tending 
to reticulation posteriorly, or replaced by a punctate area, especi¬ 
ally above the diagonal between the two acute angles of the scales* 
This species is not clearly distinguished by the definition from 
the adult E. robisoni, but it is stated by Traquair to be recognizable 
“ by the strongly marked and deeply cut ornament of its scales.” 
Form. 6f Loc. Calciferous Sandstones : Midlothian and Eifeshire. 
Carboniferous Limestone (Blackband Ironstone): Loanhead, near 
Edinburgh. 
P. 1001. Scattered remains of fish, in counterpart; Calciferous 
Sandstone, Burdiehouse, near Edinburgh. Egerton Coll. 
P. 1001 a. A similar smaller specimen; Burdiehouse. 
Egerton Coll. 
P. 4396. Portion of caudal region; Burdiehouse. 
Enniskillen Coll. 
P. 4397. Imperfect caudal region ; Burntisland, Eifeshire. 
Enniskillen Coll. 
Elonichthys pulcherrimus, Traquair. 
1881. Elonichthys pulcherrimus , R. H. Traquair, Trans. Roy. Soc. 
Edinb. vol. xxx. p. 24, pi. i. figs. 9-12. 
1 ype. Eish, wanting all fins except the dorsal; Geological Survey 
of Scotland, Edinburgh. 
A species of moderate size, attaining a length of not less than 
0*15. Length of head with opercular apparatus equal to the 
maximum depth of the trunk, contained about four and a half 
times in the total length ; cranial roof-bones closely tuberculated, 
facial bones ornamented with striae passing into tubercles on the 
margin of the upper jaw. Ein-rays robust, longitudinally striated. 
Scales of model ate size, those of the flank scarcely deeper than 
broad ; all finely ornamented and with delicate posterior serrations. 
Scale-ornament consisting of delicate transverse stria?, more or less 
oblique on the flank, and somewhat reticulated in the caudal region; 
enlarged dorsal ridge-scales marked with regularly concentric stria?. 
Form. Sf Loc. Calciferous Sandstone (Cement-stone Group) : Esk- 
clale, Dumfriesshire. 
P. 5119. Imperfect fish, exhibiting the dorsal fin and part of the 
caudal. Purchased , 1886. 
