PISCES. 153 



TLECTBODUS. Agassiz. v. Eukeraspis. 



tnirabilis, Agassiz. v. Eukeraspis pustulifera. 

 pfeiopristis. Agassiz. v. Eukeraspis pustulifera. 

 pustulifertis (Agassiz), Lankester. v. Eukeraspis pustulifera. 



PLECTROLEPIS, Agassiz. v. Eurynotus. 

 rugosus } Agassiz. v. Eurynotus crenatus. 



PLEIOPTERUS, Agassiz. v. Osteolepis. 



FLETKODUS, F. Dixon, Geol. Sussex, 1850, p. 366; A. S. 

 Woodward, Proc. Geol. Assoc, vol. x (1888), p. 331. 



espansus, F. Dixon, Geol. Sussex, 1850, p. 366, pi. xxxiii, f. 2 ; 

 J. Morris, Cat. Brit. Foss., 1854, p. 339 ; A. S. Woodward, 

 Proc. Geol. Assoc, vol. x (1888), p. 331. 

 LOC. Chalk and Gault ; S. E. England. Cambridge Greensand. 

 [Tooth ; Brighton Mus.] 



oblong'us, F. Dixon, Geol. Sussex, 1850, p. 366, pi. xxxii*, f. 4 ; 



J. Morris, Cat. Brit. Foss., 1854, p. 339; A. S. Woodward, 



Proc. Geol. Assoc, vol. x (1888), p. 331. 

 LOC. Chalk ; S. E. England. [Tooth ; Brighton Mus.] T. 



PLEURACANTHUS. L. Agassiz, Poiss. Foss., vol. iii (1837), p. 66. 

 Orthacanthus, L. Agassiz, Poiss. Foss., vol. iii (1843), pi. xlv. 

 Compsacanthus, J. S. Newberry, Proc Acad. Nat. Sci. Philad., 



1856, p. 100. 

 Lophacaxthus, T. Stock, Ann. Mag. Nat. Hist. [5] vol. v, 



1880, p. 217. 

 Anodoxtacanthus, J. W. Davis, Quart. Journ. Geol. Soc, 



vol. xxxvii, 1 88 1, p. 427. 

 ? Phricacaxthus, J. W. Davis, ibid., vol. xxxv, 1879, p. 186. 



alatus, J. W. Davis, Quart. Journ. Geol. Soc, vol. xxxvi, 1880, 

 p. 329, pi. xii, f. 4 ; J. Ward, Trans. N. Staffs. Inst. Mining 

 Engin., vol. x (1889), p. 136. 

 LOC. M. Coal-Meas. ; Tingley, Yorkshire. Coal-Meas. ; North 

 Staffordshire. [Spine ; J. W. Davis Coll.] 



alt emidentatus, J. W. Davis, ibid., p. 328, pi. xii, f. 3. 



LOC. Coal-Meas. ; Middleton, near Leeds. [Spine ; Leeds Mus.] 



altus, R. Etheridge, Foss. Brit. Islands, pt. i, 1888, p. 337: misprint 



for alatus. 

 attenuidentatus, R. Etheridge, ibid.,p. 337: misprint for altemi- 



dentatus. 

 cylindricus (Agassiz), J. W. Davis, Quart. Journ. Geol. Soc, 



vol. xxxvi, 1880, p. 331, woodcut ; A. S. Woodward, Cat. 



Foss. Fishes B. M., pt. i, 1889, p. 8. 

 Orthacanthus cylindricu*, L. Agassiz, Poiss. Foss., vol. iii (1843), 



p. 177, pi. xlv, f. 7-9 (no description) ; J. Morris, Cat. Brit. 



Foss., 1854, p. 335 .; J. Ward, [Proc] N. Staffs. Nat. Field 



