588 



PISCES. 



[ASP. EOT- 



richlhys, but many tiroes larger and 

 covered with large, IK miepheii< al, 

 smooth, enameled tubercles. Type A. 

 olavattis. 



davauip, Ntwberry, 1873, Ohio Pal., vol. 

 1, p. 3L'3, Portage Gr. 



Fio. 1102. Aspidlchtliys clavatus. 



Aspidodttf, Newbprry & Worthen, 18GC, Geo. 

 Sur. III., vol. 2, p. 92, syn. for Pse- 

 phodup. 



ccnwlutw, we P^fphodus convolutup. 



cniinlatvf, see Ptephcdus crenuhitus. 

 Asltracanllius ndtrivs, see Bytiiiacaiithus 



sideriup. 



AsTKKOPTYcmrP, McCoy, 1854, British Pal. 

 Rocks, p. 615. [Ety. ast<r, s\r;pfyx, 

 wrinkle.] Bony fin-ray compietsed, 

 long, slender, gradually la| eiing to a 

 point at tlie distal end, and abruptly 

 tapeiingat the stiiated proximate end 

 or base of insertion; pids moderately 

 convex, < on verging tot hr anteiior edge, 

 which IP strongly, keeled; pep tenor 

 face with a moderate cavity, each lat- 

 eial edge having a row of small, pointed 

 teth, directed upward; sides with 

 smooth, thread-like ridges, separated 

 by broader, flat, lot giludinally stiiated 

 spaces on which are irregularly s< at- 

 tred, Pinooth, BJ iiioustubeiclts. Type 

 A. ornatus. 



bellulup, St. John & Worthen, 1875, Geo. 

 Snr. 111., vol 6, p. 439, Coal Mcas. 



kfokuk, St. John & Woithm, 1S75, Geo. 

 Sur. 111., vol. , p. 430, Kerknk Gr. 



Etludovk-i, St. John & Worthen, 187-% 

 Geo. 8ur. 111., vol. 6, p. 437, St. 

 Louis Gr. 



tfnellup, St. John & Wortl-en. 18F3, Geo. 

 Sur. 111., vol. 7, p. 248, Up. Coal 

 Aleae. 



tennis, St. Jol-n & Worthen, 1875, Geo. 

 Sur. 111., vol. 6, p. 438, Kflpkppkia Gr. 



tmngukriH, Ke\vbeiry & AVorthen, 1870, 

 Geo. Sur. 111., vol/4, p. 370, Builiug- 

 t(.n Gr. 



vetustup, St. John and Won hen, 1875, Geo. 

 Sur. 111., vol. 6, p. 435, Waveily or Kiii- 

 dej)io< k Gr. 



ABTKROSTKIS, Nfwberry, 1875, Ohio Pal., 

 vol. 2, j>. 36. [Ety. an'tr, star; osftvn, 

 bone.] H< ad 1 ng, narrow, broadening 

 in the occipital region ; surface coveied 

 by a feheet of tubeiculated enamel; 



na^al pits strongly mntkrd; condyle- 

 lil-e J'oeterior pn jectioiiS. Type " A. 

 stenr cephalus. 



steiioieplmliiK, Newberry, 1875, Ohio Pal., 



vol. 2, p. 3(5, Coinif. r-'u-" <ir. 

 BATACAN-JIIUS, St. John & Worthen, 1875, 

 Gto. !Sur. 111., vol. G, p. 4(>8. [Ety. 

 bulos, prickly bush; akonllia, spine*.] 

 Sj.ines long, tapering, cuived forwatd; 

 apex obtuse; trann\eise Motion t-ub- 

 circular or oval, with anterior angle 

 ami posti rior face; lateral sinfiices 

 lounded, < overed with stellate tuler- 

 cl- s with intercostal sn'ci ; bas^ moder- 

 ately insert.-d; pulp* cavity bubctutrul. 

 T\pe B. bat'ulil'onnis 



bac-uliiomiis, St. John & Worthen, 1875, 

 Geo. Sur. 111., vol. 6, p. 4G9, Keo- 

 kuk Gr. 



necis, St. John & Wort ben, 1883, Geo. 

 Sur. 111., vol. 7, p. 2-33, Keokuk (Jr. 



Stella t us, Newln-ny & 'A'oitlien, 18GG, 

 (Dr* -pnnacanthu8(?) stellatup,) Gto. Sur. 

 111., vol. 2, p. 125, Ke< knk Gr. 

 BATIIYCIIII ows, St. John & WuMhtn, 1875, 

 G-o. Sur. III., vol. G, p. 252. [Ety. 

 bathi/s, deep ; ilu-ilos, lip; ddtni*, tooili.] 

 Teeth miiiute, latnaliy elongattd, sub- 

 (liiptical, hiuuons in froi.t ; median 

 cmp with cutting edgep flanked by a 

 pair of diverging denticlts of fciiuilar 

 si ape, with a minute 

 deiitit-le between tl.e lat- 

 eral and median cusps. 

 Type B. marisaacsi. 



mucis-aacsi, St. John & 



Won hen, 1875, G> o. Sur. F ]]OH _ , ? 

 111., \ ol (5, p. 252, Middle . i.V, hi I ., d us 

 ])ev.('nian. HUU-IMU..I.. 



BoTititioj.Ei'is, Eichwald. 1840, Bull. Soc. St. 

 P.ttrtsburg. [Ety. bolhiion, a furiow; 



Fio. 11W. Botliriolepls canadensis. 



Ifjris, a scale.] Cephalic shield pome- 

 wLat peiiiiellijitical in outline and cov- 

 ered with plaup, as in Pttrichihys and 



