On the Fossil Fishes of the Carboniferous Limestone Series of Great Britain. 459 
Group—Psammodontide. 
L. G. de Koninck. 
Genus—Psammodus, Agassiz. 
Teeth, large and flat, more or less rectangular in form ; root very thick, as large 
as, and similar in form to, the crown. 
Surface of the crown covered with small 
pores, raised in rugose wrinkles or worn smooth ; surface of the crown sometimes 
raised near one or both lateral edges. 
”? 
Psammodus rugosus, Agass. 
(Pl. LVI, figs: 1-7; LVIL., figs: 1=7). 
Dens tritor rugosus—Miller MSS. 
Psammodus rugosus—L. Agassiz, 
porosus n 
rugosus—J. E. Portlock, 
porosus is 
rugosus —L. G.de Koninck, 
porosus % 
rugosus—C, G, Giebel, 
porosus ; 
rugosus—H. G. Bronn, 
porosus % 
9? 9? 
canaliculatus— F. M‘Coy, 
rugosus—H. G, Bronn, 
porosus—F, A. Quenstrot, 
rugosus—J. Morris, 
porosus - 
rugosus-—F, J. Pictet, 
porosus . 
canaliculatus ,, 
rugosus—F’, M‘Coy, 
,, Var porosus ,, 
canaliculatus —_,, 
porosus—F. Roemer, 
5 E. @ Eichwald, 
rugosus—Morris& Roberts, 
porosus % 
rugosus—H. Rowanowsky, 
porosus A 
1833. 
1833. 
1843. 
1844. 
* Catalogue of Bristol Museum.” 
“ Poissous Fossiles,” Vol. III., p. 111, pl. 
xii, fig. 14-18 ; pl. xix., fig. 15. 
“Tbid,” Vol. IIL., p. 112, pl. xiii., figs. 1-18, 
“ Rept. on Geol., Londonderry, &e.,” p. 465. 
p- Xiv.a, fig. 1. 
“‘ Thid,” p. 466, pl. xiv. a, fig. 2. 
““ Descr. des Anim. Foss. du Terr.-Carb. dela 
Belvique,”’ p. 616, pl. li, fig. 8. 
“ Tbid,” p. 616, pl. lv., fig. 4. 
“ Fauna der Vorwelt,” Vol. I. pl. iii, p. 336. 
“ Tbid,” Vol. L., pl. i., p. 336. 
“ Nomencl. Paleont.,” p. 1048. 
“ Thid,” p. 1048. 
«“ Enumerator Paleont.,” p. 647. 
“Ann, & Mag. Nat. Hist.” 2nd Ser., Vol. IT., 
p. 112. 
‘“‘Enumerator Paleont.,” p. 647. 
“‘ Handb. d. Petrefakt., p. 188, pl. xiii., fig. 61. 
“Cat. Brit. Foss.,” p. 341. 
“ Thbid,” p. 341. 
“Tyraité de Paléont.,” Vol. IL, p. 266, pl. 
Xxxviil., fig. 28. 
‘¢ Tbid,” Vol. II., p. 266. 
“Tbid,” Vol. Il., p. 266. 
“ Brit. Paleoz. Foss.,” p. 644. 
“ Thid,” p. 644. 
“ Thid,” p. 643, pl. 3 G, fig. 12. 
“In H. G. Bronn Lethea geogn.,” Vol. I. 
p. 706, pl. ix., fig. 2. 
“ Lethoea rossica,” Vol. I., p. 1547. 
“ Quart. Jour. Geol. Soc.,” Vol. X VITI.,p. 101. 
“Tbid,” Vol. XVIIL., p. 101. 
“ Bull. d. 1. Soc. imp. des Nat. de Moscou,” 
p. 158, pl. iii., figs. 3 and 5. 
“Tbid,” p. 158, pl. iii., fig. 4. 
