28 PROCEEDINGS OF THE NATIONAL MrSEUM. vol. xxx. 



Fifitnlqyora multipora and I'^. .sv7y/>'/rt;^(7 arc inadequutely described and 

 the types of each, moreover, include a nunilier of distinct species. 

 Therefore neither of the last two names is held as valid, (-t) CaUopora 

 cinchinnticmfi'is is a synonym for Lioeleiiia (>ccideni< and has no relation 

 at all with ^ny of the C-incinnatian l)ryozoa. 



CERAMOPORA RADIATA James. 



Cernmopom mdiata Jamp>, Paleontologist, No. 2, 1878, p. 12. 



The type and only specimen described under this name proves to 

 be a young- example of Ceratiioporella (jranulom villfm'denKh (James) 

 from the Eden shale at Cincinnati. The specimen consists of but a 

 few maculae with the zooecial apertures lono--drawn out and radiating 

 from them in a more marked degree than usual. A similar condition 

 characterizes young specimens of all species of Ceraniopordla, Con- 

 sequentl}^ the radial arrangement depended upon in distinguishing the 

 species should not be regarded as a valid specific character. 



CERAMOPORELLA GRANULOSA MILFORDENSIS (James). 



Plate VI, tig. 7. 



CaUopora milfordensis James, Paleontologist, No. 2, 1878, p. 11. 



Monticulipora {Fistulipora) milfordensis James and James, Jour. C'incinnati Soo. 

 Nat. Hist., XI, 1888, p. 36, pi. i, tigs. 7-7b — J. F. James, Jour. Cincinnati 

 Soc. Nat. Hist., XVIII, 1896, p. 122. 



Ceramoporella granulosa milfordensis Nickles and Basslek, Bull. V. S. Geol. Sur- 

 vey, No. 173, 1900, p. 200. 



None of the descriptions or figures of this form is sufiicient for its 

 recog-nition, but I have adopted James's name in a subordinate sense to 

 distinguish an abundant Eden shale variety of Ceramoporella. The 

 specimens separated by James under the specific name aillfordeihsis 

 are of a Ceramoporella that ranges with certain slight but distinguish- 

 able modifications through all the subdivisions of the Covington and 

 Richmond groups. The first recogniza))le description and figures of 

 one of the varieties of this cosmopolitan species was published in 1890 

 by Ulrich" when he proposed the specific designation C. granulosa for 

 the form occurring so abundantly in the shaly limestone of the Rich- 

 mond group in northern Illinois. Variety milfm^densu difl'ers from 

 the typical C. </ranidom in having slightlv smaller zooecia and in tht^ 

 very slight development of the peculiar granules that occur so ai)un- 

 dantly in the Illinois types of the species. The zoaria of the latter 

 also grow into nmch thicker and larger mas.ses than those of the Eden 

 shales variety. 



Other forms of this general type were found in succeeding Cincin- 

 natian rocks. In course of time these probal)ly will receive similar 

 subordinate designations. 



«Geol. Surv. Illinois, VIII, 1890, p. 466, pi. xli, figs. 2, 2\ 



