312 BULLKTIN 53, UNITED STATES NATIONAL MUSEUM. 



6<S4. Hemipronites crenistria (Phillips). Plesiotypes. 



Upper Carboniferous. Near Camp Floyd, west of Utah 

 Lake, Utah. 



Meek, Rept. U. vS. Geol. Expl. 40th Par., IV, Pt. I, 1877, p. 62, 

 pi. 7, fig. 2. 



= Ortliotetes robustus. 



43764. Hemitrypa aspera Ulrich. Cotypes. 



43765. Keokuk (Miss.). Naitvoo, Illinois, and Keokuk, Iowa. 



IHrich, Geol. Surv. 111., VIII, 1S90, p. 563, pi. 57, fig.s. 4c-4f. 



44087. Hemitrypa nodosa Ulrich. Holotype. 



Keokuk (Miss.). Benton.sport, Iowa. 



T'lrich, Geol. vSurv. 111., VIII, 1.S90, p. 562, pi. 57, fig. 3. 



43374. Hemitrypa pateriformis Ulrich. Cotype. 



Keokuk (Miss.). Keokuk, Iowa. 



Ulrich, Geol. Surv. 111., VIII, 1.S90, p. 564, pi. 57, figs. 7-70. 



43766. Hemitrypa perstriata Ulrich. Cotype and figured .sections. 



Keokuk (Mi.ss.). Bentonsport, Iowa. 



Ulrich, Geol. vSurv. 111., VIII, 1890, p. 564, pi. 57, figs. 6, 6ca. 



43371. Hemitrypa proutana Ulrich. Plesiotypes and figured 



.sections. 

 Warsaw (Miss.). Warsaw, Illinois. 



Ulrich, Geol. »Surv. 111., VIII, 1890, p. 560, pi. 57, figs. i-ic. 



43372. Hemitrypa proutana nodulosa Ulrich. Cotypes. 

 43373- Keokuk (Miss.). Nauvoo, Illinois, and Keokuk, Iowa. 



Ulrich, Geol. Surv. 111., VIII, 1S90, p. 562, pi. 57, figs. 2-20. 



43375. Hemitrypa tenera Ulrich. Cotypes and figured .sections. 



Middle Devonian. Davenport, Iowa. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 559, pi. 44, figs. 7-73; pi. 

 54, figs. lO-IOC. 



474. Heteroceras ? angulatum (Meek and Ha^'den). Holotype. 

 P'ort Pierre (Cret.). Head of .south branch of Cheyenne 

 River, vSouth Dakota. 



Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 484, pi. 21, 

 figs. 33-0. 



See Helicoceras angulatum. 



470. Heteroceras ? cheyennense (Meek and Hayden). Holotype. 

 P'ort Pierre (Cret. ). Mouth of Big Cheyenne River, South 

 Dakota. 



Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 483, pl- 21, figs. 

 2a, 2b. 



See Ancyloceras? cheyenen.sis. 



