166 WELLBURN : FISH FAUNA OF YORKSHIRE COAL MEASURES. 
Genus: Lepracanthus, 1869. 
Sp. L. Colei Owen, 1869. 
Not common, distribution limited. 
Sp. L. rectus Wellburn, 1899. 
Type : Author's collection. 
Rare, distribution very limited. 
Genus : Euctenius unilateralis (W. J. Barkas, 1874). 
Rare, distribution very limited. 
SuB-CLASs : Dipnoi. 
Order : Sirenoidei. 
Family : Ctenodontidae. 
Genus : Ctenodus Agassiz, 1838. 
Sp. C. cristatus, 1838. 
Not common ; teeth, ribs, scales, &c. ; distribution limited. 
Genus : Sagenodus Owen, 1867. 
Sp. >S'. iiut^qualis Owen, 1867. 
Teeth rare, and distribution very limited. 
Sub-class : Teleostomi. 
Order : Crossopterygii. 
Sub-order : Rhapidistia. 
Family : Rhizodontidse. 
Genus: Rhizodopsis Young, 1866. 
Sp. R. sauroides (Williamson, 1837). 
In the author's collection are good specimens of this fish 
from the Cannel Coal, Tingley. In a fragmentary condition, the 
fish is widely distributed, but is nowhere very common. 
Genus: Strepsodus Young, 1866. 
Sp. *S'. sauroides (Binney, 1841). 
Only found in a fragmentary condition, but in the author's 
collection are fine specimens of the Clavicle, Infraclavicle, scales, 
teeth, tkc. Distribution wide. 
Sp. S. sulcidens Handcock and Atthey. 
In the Brighouse Museum there is part of a fine Mandibular 
ramus'^ — seen from the inner side — showing three fine laniary 
See Wellburn, Proc. Yorks. Geol. and Polytec. Soc, Vol, XIV,, 
Part I., p. 86, 
