1889 - 90 .] Dr Traquair on Fossil Dipnoi and Ganoidei. 387 
formation. So far as fish-life at least is concerned, there certainly 
occurred an important palseontological break at the base of the 
Millstone Grit. And my friend Mr Kidston tells me that the same 
is true with regard to the plants. 
Order DIPNOI. 
Family Ctenodontidce. 
1. Phaneropleuron Ander- 
soni, Huxley. 
2. Ctenodus interruptus, 
Barkas. 
3. Ctenodus cristatus, Ag. 
4. Ctenodus angustulus, Traq. 
5. Sagenodus quinauecostatus, 
Traq. 
Syn. Ctenodus obliquus , var. 
quinquecostatusfY.x&<\. 
Hemictenodus quinque- 
costatus , Traq. 
List. 
U.O.R. 
Dura Den. 
C.S. 
Pittenweem, Fife ; West 
Calder. 
C.L. 
Gilmerton, Loanhead ; 
Kinghorn. 
C.M. 
Dalkeith. 
C.L. 
Loanhead. 
C.L. 
Gilmerton, Loanhead. 
Family TJronemidae. 
6. Uronemus lobatus, Ag. C.S. 
Syn. Phaneropleuron ele- 
gans, Traq. 
7. Uronemus splendens, Traq. C.L. 
Syn. Ganopristodus splen- 
dens t Traq. 
Burdiehouse. 
Loanhead ; Dry den. 
Order GANOIDEI. 
? Suborder Acanthodei. 
Family Acanthodidce. 
8. Acanthodes sulcatus, Ag. C.S. Wardie; Burdiehouse; 
Oakbank; W. Calder; 
Straiton ; S. Queens- 
ferry ; Pitcorthy, Fife ; 
Ardross, &c. 
