PLATE XVII. 
P‘g Page 
1. Scapanorhi/nchun lewisii (Davia) ; abdominal and caudal 
roRions, lateral aapcct, two thirds nat. size. — Senonian ; 
Sahel Alma, Mt. Lobanon. an. Anal flu. c. Caudal 
fin. dP. Posterior dorsal fin. pet. Pectoral fin. plv. 
Pelvic fin. [P. 4020.] 352 
2. Ditto ; head and branchial region, inferior aspect, two 
thirds nat. size. — Ibid. [49474.] 352 
3. Ditto ; crown of anterior tooth, lateral aspect, three times 
nat. size. — Ibid. [49551.] 362 
4. 5. Ditto ; two anterior teeth, inner and outer aspects, three 
times nat. size. — Ibid. [49473.] 351 
6. Ditto : lateral tooth, outer aspect, four times nat. size. — 
[48099.] 351 
7. Ditto ; posterior tooth, outer aspect, four times nat. size. 
ibid. [49475.] 352 
8. Ucapanorhyiu-hus elunpatus, sp. nov. ; head and anterior 
portion of trunk, inferior aspect, two thirds nat. size. — 
ibid. [P. 4774.] y53 
9-2 1 . O-i yrhina ■numtelli, Agassiz ; associated series of thirteen 
teeth, outer and inner aspects.— Chalk ; Gia^s, Essex. 
[32347, 39434.] 378 
