﻿PLATYSOMATin.K. 531 



P. 3505. Large crushed fish, in counterpart, wanting the greater 

 portion of the head and fins, but with well-preserved 

 scales; Carboniferous Limestone (Edge-Coal Series), AVally- 

 ford, near Edinburgh. Ennisldllen Coll. 



P. 977 a. Type specimen of Platijsomus declivus, Agassiz, being an 

 imperfect small trunk wanting the tail and the greater 

 part of the head : Calciferous Sandstone, Burntisland, 

 Eifeshire. Egerton Coll. 



P. 3506. Imperfect trunk, in counterpart ; Carboniferous Lime- 

 stone, Gilmerton, near Edinburgh. Ennislcilhn Coll. 



P. 4620. Remains of fish showing pectoral fin ; probably from the 

 Carboniferous Limestone Series near Edinburgh. 



Enniskillen Coll. 



P. 3478. Type specimen of Plectrolepis rugosa, Agassiz, as deter- 

 mined by Egerton. Ennislcillen Coll. 



The following species have also been named, but there are no 

 examples in the Collection : — 



Eurynotus (?) aprion, R. H. Traquair, Trans. Roy. Soc. Edinb. 

 vol. xxx. (1881), p. 54, pi. v. fig. 20. — Calciferous Sand- 

 stone (Cement-stone Group) ; Tweeden Burn, Dumfries- 

 shire. Lower Carboniferous ; Moyheeland, Ireland. 

 [Scales ; Geological Survey of Scotland.] 



Eurynotus insiynis, R. H. Traquair, ibid. vol. xxix. (1879), p. 349 : 

 Platijsomus (?) insiynis, L. G. de Koninck, Eaune Calc. 

 Carb. Belg. pt. i. (1878), p. 25, pi. iii. figs. 1, 2.— Carbo- 

 niferous Limestone ; Yiesville, Belgium. [Imperfect head 

 and abdominal region ; Royal Museum, Brussels.] 



Eurynotus microlepidotus, R. H. Traquair, Proc. Roy. Soc. Edinb. 

 vol. xvii. (1890), p. 400. — Middle Carboniferous Lime- 

 stone ; Loanhead, near Edinburgh. [Collection of Dr. R. H. 

 Traquair.] 



The so-called Eurynotus tenuicejps, Ag., is a species of Semionotus 

 (see Part III.). 



Genus MESOLEPIS, Young. 



[Quart. Journ. Geol. Soc. vol. xxii. 1866, p. 313.] 



Syn. Pododus, L. Agassiz, Poiss. Eoss. vol. ii. pt. ii. 1844, p. 83 (name 

 only). 



Trunk very deeply fusiform, the dorsal contour more or less angu- 

 lated at the origin of the dorsal fin. Erontal profile of head sharply 

 angulated immediately in advance of the orbit ; head and opercular 



2m2 



