displayed in flic other lins, and are shown to have l)een all artieidated to the 
base, with distal bifurcation into fine filaments. The ])elvic fins are much 
disturbed, but distinctly long’cr than deep in tlio type speinmcn, and in No. d 
(PI. I, Pigs. 1, ; PI. V, Pig. 1), and the broad closely articulated ray (ex) 
to the number of about forty are finely tnbercnlated on their anterior liorder. 
In advance of the rays there are a few short liasal fnlera, gradually increasing 
in length and all snjiported by one rolnist endoskeletal cartilage ; the later 
being the foremost of a series of rod-like basal cartilages (end.) which support 
the pelvic tin exactly as in the Sturgeons. The dorsal fin is large and triangular, 
acuminate, arising in advance of a point opposite the hinder extremity of 
the 2 ^elvic tins, and no fulcra are jireserved on its anterior margin. The 
snj)j)orts are very long and slender, superficially calcitied and expanded at 
their articulation with the fin-rays ; they are only slightly less numerous than 
the latter, about seven su^i^iorts corrcs^ionding to nine rays. The anal fin is 
smaller than the dorsal and in great jiart behind tlie latter, but similarly 
sii 2 )ported by long slender cartilages (PI. I, Pig. 2 ; PI. II, Pig, 4; PL V, 
Pig. 1.) The caudal fin is not quite symmetrical, the njiper lobe being the 
largest, and the jirincipal rays of the lower lolie the stoutest ; fulcra are 
prominent both above and below, the former as usual being mucli the largest, 
and all, so far as can he ascertained, imiscrial. 
Squamatlon . — All the scales, exce|^t those of the upj)er caudal lobe, 
are very thin and deeply ovcrla})ping, almost cycloidal in form, but witli a 
rhombic cxjiosed area (PI. I, Pigs !<?, \d .) . Tlie wide ovcrla 2 q)ed margin exhibits 
the fine concentric lines of growth ; tln^ ex|)Osed jiortion is ornamented witli 
tubercles ofganoine, wliicli tend towards an arrangement in horizontal 2 )aTallel 
lines. The scales of the ilank are not dee])ened, while those of the ventral 
aspect are not narrowed ; and there are no indications of thickened or enlarged 
ridge-scales except on tlie iqipcr caudal lobe. This lo1)c is very long and 
slender, and is covered as usual on the sides with stout rliombic scales, which 
exhibit a fine tulierculation. 
COCCOLEPIS (?), sp. 
Plate If, f"ig. 3. 
.Vnother example of a Palmoniscid fish is too imjierfectly ju’cserved for 
precise determination ; Init it evidently belongs to a genus with tliin scales, 
while the arrangement of tlie fins and dentition is not inconsistent with its 
