NO. I 



SMITHSONIAN EXPLORATIONS, IQIQ 



21 



their comparative study cue of much interest. Important new mate- 

 rial was obtained which is added to the coUection of echinodernis 

 deposited in the National Museum. Mr. Springer's monograph of 

 the Crinoidea Flexibilia, now beinL;- ])ul)lished by the Smithsonian 

 Institution, has lieen printed and only awaits binding' to be ready 

 for distribution. It will be in two quarto volumes, one of them con- 

 taining" 79 plates. 



The Section of \'ertebrate Paleontology has been unable to under- 

 take any tield exi)lorations during the past year, and the time of the 

 staff has been largely employed in preparing" and mounting for 

 exhibition material otherwise obtained. 



Fir;. 20. — View of sinall pdrtiun of llulTiiian Ci>iisrr\ancy dani near 

 Daj'ton, Ohio, showing excavation in wiiicli tlie largest trilol)ite was found. 

 Photograph hy courtesy of .Arthur R. Morgan, chief engineer. 



Through llie acfuu'sition from the \eteran collector of fossils. 

 Mr. ( h;irl(.'> II. Slerubrri;. of an c.xcellciil skckion ol the large 

 swimming li/ard Txlosdiinis dysf^clor and ;i skull of llu- ])rimitive 

 horned dinosaur M niioclmnits, an inlrresting addition to llii' c\hil)i- 

 tion collection was made, ligiu'c _' i shows the / xlnsditnis skeleton 

 in process of being mounted for cxliihilion b)- .Mr. .\ . II. lloss. It 

 will form a panrl. in li.df i"(liif, and will occu])y the wall space in 

 the northeastern jiai i of tin- main exhibition hall ol lossil verlel)rates. 

 The di\ing ])ose given the skeleton was largely deteiniiiii'il li\ the 

 position of the articulated tail ;is fnuii'l in llie L^round. 



