14 BULLETIN NO. 2. 



GENUS SANGUINOLITES, McCoy. 



SANGULVOLITBS ? MULTISTRIATUS. (sp. HOV.) 



The specimen from which the following description is drawn, is 

 a cast from the shaly sandstone of the Keokuk group, and may 

 be characterized as follows. 



Shell below the medium size, oblong, valves moderately convex ; 

 beaks depressed, and situated about one-third the entire length of 

 the shell behind the anterior extremity. 



Dorsal line straight, basal border slightly rounded, extremities 

 obtusely pointed and apparently gaping, surface marked by num- 

 erous fine concentric striae that are most conspicuous on the pos- 

 terior portion of the valves. The specimen is somewhat distorted 

 by pressure, so that its exact proportions cannot be determined. 



Length 1 inch ; height | inch. 



Position and locality : Keokuk shales near Crawfordsville, In- 

 diana. 



No. 2128 of the Illinois State collection. 



Collector, Frank H. Bradley. 



SANGUINOLITES? BURLINGTONENSIS. (sp. nOV.) 



Shell of medium size, longiiudinally elongate-ovate, more than 

 twice as long as high, moderately and evenly convex anteriorly, 

 and regularly depressed towards the posterior extremity. Cardinal 

 margin slightly depressed in the middle and elevated behind, giv- 

 ing a greater breadth to the posterior than the anterior region. 



Beaks not prominent, and situated close to the anterior extrem- 

 ity. The specimen is a cast, and shows no surface markings. 



Length li% inches; greatest height |^ inch. 



Position and locality: Burlington limestone, Calhoun county, 

 111. 



No. 2541 of the Illinois State collection. 



Collector, A. H. Wortheii. 



GENUS BAKEVELLIA, King. 



BAKEVELLIA ILLINOIENSIS. (sp. UOV.) 



Shell about medium size, elongate subrhomboidal, left valve 

 moderately convex from a ridge which extends from the beak 

 about two-thirds the distance to the cardinal border where it be- 

 comes obsolete. 



This ridge slopes abruptly to the dorsal margin, and more grad- 

 ually to the anterior portion of the shell. Posterior wing equal 

 to about two-lifths of the entire length of the shell. Umbonal 

 region squarely truncated at the apex, upper portion of the an- 



