the Upper Devonian of Iowa. 371 



Actinostroma cf. expansum (H. & W.). 



Actinostroma n. sp. 



Syringostroma (?) planulatum (H. & W.). 

 Vermes 



Serpularia, several unidentified species. 



Cornulites, unidentified species. 



Spirorbis omphalodes Goldfuss. 



Spirorbis arkonensis Goldfuss. 



•Specimens, probably of the Tubulifera. 

 Echinodermata 



sp. undet. 



Melocrinus sp. undet. 



Other undetermined crinoids, totalling about ten species 

 (Webster). 



Nortonechinus n. sp. 



Echinoids undetermined. 

 Bryozoa 



Vinella (?) sp. undet. 



Hederella alternata (H. & W.). 



Hederella sp., cf. filiformis Nicholson. 



Lioclema occidens (H. & W.). 



Lioclema minutissimum Hall & Clarke. 



Fenestella vera Ulrich. 



Fenestella n. sp. ( ?). 



Eridotrypa n. sp. 

 Brachiopoda 



Crania f amelica H. & W. 



Crania famelica n. var. 



Crania crenistriata Hall. 



Schizophoria striatula (Schloth.). 



Schizophoria striatula impressa (Hall). 



Leptostrophia canace (H. & W.). 



Leptostrophia perplana nervosa (Hall). 



Stropheodonta n. sp. (cf. calvini Miller). 



Stropheodonta exilis Calvin. 



Stropheodonta (variabilis Calvin). 



Douvillina arcuata (Hall). 



Douvillina arcuata maxima Fenton. 



Strophonella reversa Hall. 



Strophonella reversa gravis Fenton. 



Strophonella reversa hybrida (Hall). 6 



Schuchertella parva (Hall). 



Schuchertella chemungensis (Con.) ? 



Productella hallana Walcott. 



Productella truncata Hall. 



•Described as a distinct species (23d Ann. Eep. N. Y. State Cab.). This 

 form intergrades to such an extent with the earlier, and more clearly defined 

 species S. reversa that it is here placed as a variety of that species. 



Am. Jour. Sci. — Fourth Series, Vol. XLVIII, No. 287 — November, 1919. 

 26 



