350 
CROSSOPTEKYGTI. 
1890. Strepsodus sauroides, Woodward & Sherborn, Cat. Brit. Foss. 
Vertebrata, p. 189. 
1890. Strepsodus sauroides , J. Ward, Trans. N. Staffs. Inst. Mining 
Engin. vol. x. p. 160, pi. ii. figs. 5, 25. 
Type. Tooth; E. W. Binney Collection. 
The type species. Teeth relatively 1 ong and slender, somewhat 
laterally compressed, often sigmoidally bent at the apex ; inner face 
covered with prominent, thread-like, well-spaced striae almost to the 
apex ; basal folds very short. Jaw externally ornamented with fine 
tuberculations. 
Form. <Sf Log. Coal-Measures : English, Scottish, and Irish Coal¬ 
fields. v V , c st , 
P. 364. Three slabs of shale showing fragments of jaws and other 
head-bones associated with vertebrae and scales ; Black- 
band, Airdrie, Lanarkshire. Purchased , 1881. 
37323, 41999. Two fragments of mandible with imperfect teeth; 
Airdrie. Purchased, 1863, 1870. 
P. 2287. Associated fragments of jaws; Carluke. 
Presented by George Griffiths , Esq., 1882* 
Fig. 51. 
Strepsodus sauroides (Binney).—Tooth, natural size. Coal-Measures, England. 
49119. Fragments of mandible showing one of the large teeth, and 
traces either of tubercular ornament, or a rugose surface 
left by the removal of superficial ganoine; Scotland. 
Purchased, 1878. 
21227, 21423. Twelve teeth, and small group of tooth-fragments; 
Carluke. Purchased, 1847. 
37957. Large robust tooth ; Airdrie. Purchased , 1863. 
