DEI.. — DES.] 



PISCES. 



595 



Deltodopsis, St. John & Worthen, 1883, 

 Geo. Sur. 111., vol. 7, p 158. [Ety. from 

 resemblance to Deltodus.] Coronal cuii- 

 tour and general aspect near Deltodus, 

 distinguished by the differentiation ol 

 the median ridg°, of the anterior coronal 

 prominence, which approaches Cochlio- 

 dns o>* Ctiitono lu-=. Type D. angusta. 



affinis, St. John & Won. .en, 1883, Geo. 

 Sur. III., v.,1. 7, p. 100, Warsaw Gr. 



angusta, Newberry & Wort hen 1870. 

 (Deltodus angustus, ) Geo. Sur. III., vol. 

 4, p. 308, Ka^kaskia Gr. 



bialveiita, St. John & Worthen, 18^3, Geo. 

 Sur. III., vol. 7. p. 109, Bnrhnyt »n Gr. 



convex*, St. John & Worthen, 1883, Geo. 

 Sur. 111., vol. 7, p. 109, Up. Burling- 

 ton Gr. 



convoluoj, St. John & Worthen, 1883, 

 G»o. Sur. 111., vol. 7, p. 105, Up. Bur- 

 lingron Gr. 



exomata, St John & Worthen, 18S3, Geo. 

 Sur. HI., vol 7, p. 108, Warsaw Gr. 



inflexa, St. John & Worihen. 1883, Geo. 

 Sur. III., vol. 7, p. 167, Keokuk Gr. 



ke<>knk, Sr. John & Worihen. Geo. Sur. 

 111., vol. 7, p. 100, Keokuk Gr. 



stludovici, St. John & Worthen, 1883, Geo. 

 Sur. 111., vol. 7, p. 101, St. Louis Gr. 

 Deltodcs, Agassiz, 1859, MS8., and New- 

 berry & Worthen, ]8(}(>, Geo. Sur. 

 111., vol. 2, p. 95. [Eiy. delta, tri- 

 angle; odous, tooth.] Teeth lime, 

 thick, strong, triangular, more or less 

 arched, sometimes inrolled from the 

 ionger and more acute angle to tiie op- 

 posite margin ; cr> >wn surface arched 

 or marked by 1-3 prominent ridges 

 frtim the basal margin toward the 

 longer angle. Typ>- D. sublsevis. 



alau*, Newberry & Worthen, syn. for " 

 Cnitonodns latus. 



antju/uris, N« wherry & Worthen, syn. 

 lor Oitiiop'eurodus carbonarius. 



attyiixlu*, see D> ltoilot-s's angusta. 



cimtu us, St. John & Wo'then, 1883, 

 Geo. Sur. III., vol. 7, p. 140, Warsaw Or 



cingulatus, Newberry & Woifrien, 1800, 

 (ieo. Sur. III., vol. 2. t>. 99, Kadia-kia Or. 



compianntu*, see S>n lalo Ins comp'auatus. 



fmteiatut, s j e Taeni .din fascial us. 



giandis, Newl»-rrv & Wo'tlun, 1800. Geo. 

 Sur. III., vol. 2. p. 101, Keokuk Gr. 

 Probably syn. for Sandalonus iajvis- 

 simu^. 



intermedins, St. John & Worthen, 1883, 

 Geo. Sur. III., vo'.7, p. 153, St. Louistir. 



lalior, St. John & Worthen, 1883. Geo. 

 Sur. Ill , vol. 7, p. 145, Keokuk (ir. 



liitoni, New-ben y & Worihen, 1870, Geo. 

 Sur. HI., vol. 4, p. 307, Subcaibonif 

 erous. 



occidental!*, Leidv, 1850, (Gocldiodus oc- 

 c dentals,) Tr-.ns. Am. Pnil. Soc, vol. 

 II, |>. 87, War-ww and St. Louis Grs. 



parvus, St. John & Worihen, 188?, Gen. 

 Sur. HI., vol. 7, p. 151, St. L«uis Gr. 



powtlli, Si. John & Worth, n, 1883, Geo. 

 Sur. 111., vol. 7, p.. 154, Cat bouil'erous. 



prnpinquus, St. John & Worthen, 1883, 

 Geo. Sur. 111., vol. 7, p. 50, C< al Meae. 



rhontboitlens, Newberry & Worthen, syn. 

 for Sandal' dus spatulaius. 



spatulaius, Newberry & Worthen, 1800, 

 Geo. Sur. 111., vol. 2, p. 100, Bui ling- 

 ton Gr. 



stellatus, Newberry & Worthen, 1800. 

 G-o. Sur. III., vol. 2, p. 97, Keokuk Gr! 



trilobus, St. .1 .lin & Worthen, 1883, Geo. 

 . Sur. III., vol. 7, p. 148, Warsaw Gr. 



undulatus, Newberry & Worihen, 1S00, 

 (ie<>. Sur. HI., vol. 2, p. 98, Keokuk Gr. 

 DEi/roeTYciui'S, Agas-iz, 1859, AISS., and St. 

 John & Worihen, 1883, Geo. Sur. 111., 

 vol. 7, p. 8'). [Ety. dtltti, triangle; 

 ptyx, a wrinkle,] Posterior te« th of 

 lower jaw trigonal, strongly built, and 

 arched in the dirtctiou ot inrolhnent; 

 coronal contour in three divisions, nar- 

 rowing toward the outer extremity; 

 those of the upper jaw su> Spalulate, 

 inrolled ou the outer ma-gin, acute 

 posteriorly. Type D. a< u'us. 



expansu*, Si. John & Worihen, 1883, Geo. 

 Sur. Ill , vol. 7, p. 98, St. Louis Gr. 



nitidus, Leidy, 1 S5 >, (Cochliodus nitidus,) 

 Trans. Am. Pi.il. Soc, Vol. 11, p. 87, 

 Kaskiskia Gr. 



primus, St. John & Worthen, 1883, Geo. 

 Sur. 111., vol. 7, p. 93, Up. Burling- 

 ton Gr. 



varsoviensis. St. John & Worthen, 1883, 

 Geo. Sur. III., vol. 7, p. J)0, Warsaw Gr. 



wachsmu hi, St. John & Worthen, 1883, 

 Geo. Sur. 111., vol. 7, p. 93, Keokuk Gr. 



Fig. 1124.— Delloptychius wachsmutlil. 



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

 Sur. 111., vol. 0, p. 337. [Ety. drtmos, 

 a ligann nt ; odous, a tooth.] This name 

 was a. plied to a genus of hats, in 1820, 

 bv Piinz, Neu. Wied. in Beittage zur 

 Naturg. Brasiliens. Teeth occurring in 

 rows, small, robust; crown laterally 

 elongated, arch* d vertically; median co*p 

 with lateral crests; base constricted 

 and produced. Type D. tumidns. 



costelliferus, St. John & 

 Worthen, 187o, G> o. Sur. 

 HI., vol. 0, ]>. 311, St. 

 Louis Gr. 



fl. helium, St. John & Wor- 

 then, 1875, G< o. Sur. 111., F ™- { }^-~ ^e*- 

 vol. 0, p. 343, Keokuk Gr. 



ligoniionnis, St. John & 

 Worthen, 1875. Geo. Sur. 

 III., v< 1. 0, p. 342, Keokuk Gr. 



minusculus, Newb'-ny & Worthen, 1800, 

 (U odus ininnsculn-,) (ieo. Kep. 111., 

 vol. 2, p. 07, Keokuk Gr. 



iniodus cos- 

 tell i f e r u h. 

 Convex as- 

 pect. 



