344 
CROSSOPTERYGTI. 
P* 718-20, P. 2071. Three portions of left mandibular rami, and 
a slab with remains of both rami of a mandible. 
Egerton Coll. 
P. 3316-18. Three specimens showing portions of mandible, the 
second being a left ramus displaying the infradentaries, 
and shown of one-third the natural size in PI. XII. fig. 1. 
Enniskillen Coll. 
41111. Base of a very large mandibular tooth, with the supporting 
bone. Bryson Coll. 
P. 3315. Tooth about 0*17 in length, wanting the apex, and fixed 
to the supporting bone. Enniskillen Coll. 
24846-48. Three large mandibular teeth. Purchased , 1850. 
40150. Crushed large mandibular tooth ; Blackband (Carboniferous 
Limestone), Jordan Hill. 
Presented by Archibald Smith, Esq., 1866. 
41109-10, 41112-14. Five large mandibular teeth. Bryson Coll. 
50010. Large mandibular tooth. Trevelyan Bequest. 
P.717. Three large mandibular teeth; Carboniferous Limestone, 
Lochgeily, Life. Egerton Coll. 
P. 3319. Three large mandibular teeth ; Lochgelly. 
Enniskillen Coll. 
P. 5123. Tooth 0*14 in length. Purchased, 1886. 
P. 717 a. Two imperfect large mandibular teeth; Calciferous Sand¬ 
stone, Burdiehouse. Egerton Coll. 
P. 4800. Four mandibular teeth, doubtfully of this species ; Fossil 
Blackband (Middle Carboniferous Limestone), Airdrie, 
Lanarkshire. One specimen, showing facettes, is repre¬ 
sented, of the natural size, in PI. XII. fig. 2. 
Armstrong Coll., transferred from Mus. Science Sf 
Art , Edinburgh , 1884. 
21975 b. Operculum, inner aspect; Burdiehouse. Purchased, 1848. 
21222 e. Obscure remains of pectoral arch, with a few robust, 
unarticulated fin-rays. Purchased, 1847. 
47717. Left clavicle broken across the middle and the upper 
portion somewhat displaced downwards. The exposed 
area is covered with the characteristic fine reticulations; 
the anterior concave border is thickened, somewhat bent 
