BLENNIIDJ3. 0 ADIDAE. 
597 
cvi. (1891), p. 113, pi. iii. fig. 3. — Upper Miocene ; Dolje, 
Croatia. [Imperfect fish ; Geological Museum, University 
of Agram.] 
Clinus yraeilis, F. Steindachner, Sitzungsb. k. Akad. Wiss., math.- 
naturw. Cl. vol. xxxvii. (1859), p. 675, pi. i. figs. 1-3. — 
Upper Miocene ; Hernals, Vienna. [Imperfect fish ; 
Court Museum, Vienna.] 
The following extinct genus and species, which is not represented 
in the Collection, probably belongs to the Blenniid®, but is too 
imperfectly known for exact determination : — 
Oneolepis isseli, F. Bassani, Palaeont. Italics, vol. iii. (1898), p. 79, 
pi. ix. figs. 1, 2. — Upper Eocene ; Monte Bolca. [Imper- 
fect fish ; Geological Museum, University of Genoa.] 
Nothing is known of the undescribed teeth from the Pliocene of 
Belgium, recorded under the name of Palanarrhichag crassus, H. Le 
Hon, Prelim. Mem. Poiss. Tert. Belg. (1871), p. 10. 
Suborder X. ANA CANTHINI. 
Vertebral centra always complete constricted cylinders, none 
coalesced. Supraoccipital extending forwards between the reduced 
parietals ; squamosal rudimentary and fused with the large pterotic ; 
mandible simple, each ramus consisting only of two elements 
(dentary and articulo-angular). No spinous fin-rays. Pectoral arch 
suspended from the cranium ; precoracoid arch absent ; infra- 
clavicular plates absent ; pectoral fin with not more than four or 
five basals. Pelvic fins, when present, thoracic or jugular. In the 
living forms : — air-bladder, when present, not connected with the 
oesophagus by a duct in the adult (physoclistous) ; optic nerves 
decussating ; intestine without spiral valve ; reproductive organs 
with efferent ducts. 
No important extinct representatives of this suborder are known. 
All are normal members of the existing families, Gadid® and 
Pleuronectid®. 
Family GrADID-ZE. 
Trunk more or less elongate, and head bilaterally symmetrical. 
Mouth large and terminal; premaxilla excluding maxilla from 
gape ; cheek-plates much reduced ; gill-openings very wide. Ab- 
dominal vertebr® with transverse processes ; ribs comparatively 
