94 Bibliographical Notices. 



BIBLIOGRAPHICAL NOTICES. 



Some Publications on American Carboniferous EchinoJerms. 



Geoluf/ical Survey of Missouri. Bulletin no. 4. A Description of 

 some Lower Carboniferous Crinoids from Missouri. By S. A. 

 Miller. Published by the Geological Survey. Jefferson City, 

 February 181U. 



Description of some neiv Genera and Species of Echinodermata from 

 the Coal 3Ieasures and Subcarboniferous liocls of Indiana, Mis- 

 souri, and Iowa, By S. A. Miller and Wsi. F. E. Gurlet. 

 Published at Danville, Illinois, June 1890. 



That energetic species-maker, ^Ir. S. A. ^liller, of Cincinnati, has 

 again been hard at work, and, either alone or in collaboration with 

 Mr. Gurley, who has been an active collector for many years, has 

 made himself responsible for six new genera and over ninety new 

 species of Crinoids from the Lower Carboniferous rocks of the 

 Mississippi Yalley. Forty-two of these new species and one new 

 genus are described from Missouri, twenty of them occurring in the 

 Burlington Group, in which over three hundred and fifty species of 

 Crinoids are already known. Fourteen of these twenty are referred 

 to Plutycrinus, of which genus some three dozen species had pre- 

 viously been described from the Burlington beds, and ten of the new 

 ones are founded on single specimens ! Considering the richness of 

 the Crinoid fauna in the Burlington Limestone, one might naturally 

 expect that the affinities of MiUer's new species to those previously 

 described would be indicated by their founder. But he seems to be 

 almost entirely unacquainted with the first duty of a species-maker, 

 and only gives this much-needed information about three species of 

 I'ldti/critms, two of Banicrinus, and one of ScapJiiocritius, while the 

 remaining thirty-five are described and no'Jiing more. 



The new genus Missouricrinxs has a monocyclic basin-shaped 

 calyx, with the anterior ray undivided and a single axillary in each 

 of the others. The anal plate (Bather's brachianal) separates two 

 radials and rests upon the truncated apex of a basal, just as in 

 Cyathocrinus. According to the author " the affinities are nearest 

 the Heterocrinida; ; but I think a new family should bo formed for 

 it. Type M. admonitus." 



This memoir is illustrated by five fairly good plates, though some 

 of the figures would have gained in clearness had they been on a 

 larger scale ; and the explanations of plates iv. and v. would have 

 been better arranged according to the numerical sequence of the 

 figures, instead of beginning with fig. 7. 



One more point is noteworthy. It is not many months since 

 Mr. Miller thought fit to comment somewhat strongly on the 

 " illiteracy " of the present writer, " for he even uses capital letters 

 lor sjtecific names, or lower-case as it mm b(\ sliowing his \\;u\t of 



