NO. 2177. FOSSIL FISHES IN NATIONAL MUSEUM— EASTMAN. 271 



occurring at this locality is Coelacanthus elegans; and this author 

 remarks : 



While perhaps a thousand specimens mo-e or less perfect have been taken from 

 one coal mine there, with the exception of a single one found at Morris (Illinois), 

 no representative of this world-wide genus has been elsewhere seen in America 



At the conclusion of the volume just cited Newberry records this 

 additional observation in regard to Coelacanthus ornatus: 



This is a small species found at Linton, Ohio, where it is very rare. It is briefly 

 described in the Palaeontology of Ohio, vol. 1, p. 340. Since the publication of that 

 volume I have obtained several other specimens and find that it may be readily identi- 

 fied by its small size, relatively large cranial tubercles, and very thin, delicate scales 

 on which the raised lines are parallel and do not converge as in C. elegans and C. 

 robustus. 



Again, at page 215 of the same work, the author remarks: 



Since the notice of the Mazon Creek fishes was published in the report of the Illinois 

 Geological Survey I have received from there a single specimen each of Eurylepis and 

 Coelacantliv^, probably not distinct from those found at Linton. 



It thus appears from the writmgs of Newberry that among the 

 large number of Mazon Creek nodules examined by him, only a sin- 

 gle specmien of Coelacanthus came under his observation, and that 

 he identified as belonging to C. elegans. An alUed small species was 

 described by the present writer in 1903, and a supposed new form 

 of large size has recently been discovered by Prof. E. H. Barbour in 

 the Coal Measures of Nebraska. 



COELACANTHUS ELEGANS Newberry. 



Plate 9, figs. 5, 6; plate 11, figs. 3, 4. 



Probably to this species should be referred a half dozen specimens 

 in the United States National Museum collection, all much dis- 

 torted and imperfect, but agreeing in scale characters and details 

 of ornamentation of cranial plates with C. elegans. Tlie fact that 

 Newberry recognized the occurrence of this species at the Mazon 

 Creek locality increases the probability that we have really to do 

 with a form already known from Lmton, Ohio, instead of with an 

 undescribed representative of the genus. Tlie specimens fio-m-ed in 

 the accompanying plates are catalogued imder the following numbers 

 4381, 4383, 4405, 4438. 



Formation and locality. — Coal Measm^es, Mazon Creek, Illinois. 



COELACANTHUS EXIGUUS Eastman. 



Plate 10, fig. 1. 



Coelacanthus exiguus Eastman, Journ. GeoL, vol. 10, 1902, p. 538, text fig. 3; Bull. 

 Mus. Comp. Zool., vol. 39, 1903, p. 189, pi. 5, fig. 48. 



This is a smaU-sized species, none of the Imown examples exceed- 

 ing 5 cm. in total length. The type and nine other specimens -are 



