NO. 1442. JAMES TYPES OE BRYO/OA — BASSLEIi. 11 



uneven, eylindrical branched coral, Troin oiie-fonrth to three-eig-hths 

 of an inch in diameter. 



"Found at Cinciiuiati, about -too feet above low water of the Ohio 

 River." 



The above desci'iption Avouhl lead one to believe that the form 

 under consideration was a \'ery small species of Stoiiiatopofa incrust- 

 ing foreign objects. The type specimen, however, is not incrusting, 

 but is a solid ramose bryozoan belonging to the species later named 

 by Ulrich and described hy Nicholson as Montlmdlpoixi {Heterotryjxi) 

 mipllcata^ now referred to the genus Batostoma. James's description 

 was based upon the surface of this liighly acanthopored species, his 

 network or meshes being formed l)y the zo(jecial walls and the large 

 perforated acanthopores representing the "little circular mouths." 

 The name Alecto nexills^ therefore, has no standing since it rests on 

 an inadequate diagnosis and the species will take the name given by 

 Nicholson, this being the first by which the object was clearly' defined. 

 Nicholson accredits the species to Ulrich, but this is incorrect because, 

 although Ulrich did first recognize the species as distinct, his name of 

 Chaetetex Implicidus published in a catalogue is merely a nonien nudurit. 



Batostoma implicatum is (juite an abundant fossil in the Eden shale 

 at Cincinnati and vicinity, but in no instance, to the best of the writers 

 knowledge, has it been found in beds above the top of this formation 

 (about 280 feet above low water in the Ohio River), James's reference 

 of his Alecto ne.nlls to the -iOO-foot level (Corryville bed) is therefore 

 probabl}?^ incorrect. 



AMPLEXOPORA DISCOIDEA (Nicholson). 



Clinetetes discoidi'iix J.\mes, Catal. Foss. ('incinniiti group, 1871, p. 4. (Named 



but not defined. ) 

 Chnetetes discoideus Nicholson, Quar. Jour. (Jeol. Soc. London, XXX, 1874, p. 



511, pi. XXX, figs. 4-4d. 

 Chaetetes discoideus Nicholson, (feol. Surv. Ohio, Pal., II, 1875, p. 206, pi. xxi, 



figs. 15-15c. 

 Monticulvpora {Monotrypa) discoidea Nicholson, Genus Monticulipora, 1881, p. 



193, pi. IV, figs. 3-3f. 

 Monticulipora discoidea James and J.vmes, Jour. Cincinnati Soc. Nat. Hist., X, 



1888, p. 163.— J. F. James, Jour. Cincinnati Soc. Nat. Hint, XVI, 1894, p. 178. 

 Ample.ropora discoidea Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, 1882, p. 255. 



Nicholson accredits this species to James, but inasmuch as the latter 

 named it without definition, Chaetetes discoideus James is a nomen 

 nndmii. The James types of Chaetetes discoideus include, in addition 

 to the well-known form described by Nicholson under the same name, 

 specimens of Amplexopora petasiformis (Nicholson) and Aspldopova 

 7}ewher7'yi (Nicholson) from the Eden shale, Prasopora Jiospitalis 

 (Nicholson) from the Richmond group, and several imdetermined spe- 

 cies rano-my- in time from the Eden to the Richmond. These various 



