TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 339 



5005. Isotelus planus DeKay. Plastotype. 



Utica (Orel. ). Near Newport, Kentucky. 



Green, Moii. Trilo1)ites X. America, Phila., 1832, p. 68. Cast 

 No. 23. 



= Isotelus platycephalus. 



4S95. Isotelus stegops Green. Plastotype. 



ITtica (Orel.). Newport, Kentucky. 



Green, Mon. Trilobites N. America, Phila., 1832, p. 71. Cast 

 Nos. 26, 27. 



= Isotelus ])latycei)lialus. 



41902. Isotelus susae Whitfield. Plesiotype. 



Richmond (Ord.). Two miles east of Spring- \'alley, 

 Minnesota. 



Clarke, Geol. and Nat. Ilisl. vSurv. ?klinn., Innal Rl])L, III, Pt. 

 II, 1894, p. 708, figs. lU, I I. 



43376. Isotrypa ( PTectulipora ) gothlandica Ulrich. Holotype 



and figured .sections. 

 Silurian. I.sland of Ootland, Sweden. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 67S, pi. 54, figs. 6, 6c. 



18445. Isoxys chilhoweana Walcott. Cotypes. 



Lower Cambrian. Near Montvale vSprings, Chilhowee 

 Mountain, Tennessee. 



Walcott, Tenth Ann. Kept. U. S. Geol. Surv., 1890, p. 626, pi. 

 80, figs. JO, loa. 



35056. Jaekelocystis avellana Schuchert. Holotype. 



Manlius (vSil.). Near Ke^'.ser, West Virginia. 



Schuchert, Smith.sonian Mi.sc. Coll., Quart., XI^VII, 1904, p. 226, 

 text fig. 28; pi. 37, figs. IT, 12. 



35055. Jaekelocystis hartleyi vSchuchert. Cotypes. 



Manlius (Sil.). Near Keyser, West Virginia. 



vSchuchert, Amer. Geol., XXXII, 1903, p. 231; Smithsonian 

 Misc. Coll., Quart., XLVII, 1904, ]>. 224, text fig. 27, pi. 37, 

 figs. 4-8. 



35057- Jaekelocystis papillatus Schuchert. Holotype and paratype. 

 Manlius (Sil.). Near Keyser, West Virginia. 



Schuchert, Smithsonian Misc. Coll., Quart., XLVII, 1904, p. 225, 

 pi. 37, figs. 9, 10. 



41497. Jonesella crassa Ulrich. Cotypes. 



Black River (Ord.). St. Paul, Minnesota. 



Ulrich, Journ. Cincinnati Soc. N^at. Hist., XIII, 1890, p. 123, pi. 

 7, figs, iia-c. 



= Ctenobolbina crassa. 



