312 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



684. Hemipronites crenistria (Phillips). Plesiotypes. 



Upper Carboniferous. Near Camp Floyd, west of Utah 

 L,ake, Utah. 



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

 pi. 7, fig. 2. 



= Orthotetes robustus. 



43764. Hemitrypa aspera Ulrieh. Cotypes. 



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



Ulrieh, Geol. Surv. 111., VIII, 1890, p. 563, pi. 57, figs. 4C-41. 



44087. Hemitrypa nodosa Ulrieh. Holotype. 



Keokuk (Miss.). Bentonsport, Iowa. 



Ulrieh, Geol. Surv. 111., VIII, 1S90, p. 562, pi. 57, fig. 3. 



43374. Hemitrypa pateriformis Ulrieh. Cotype. 



Keokuk (Miss.). Keokuk, Iowa. 



LTlrich, Geol. Surv. 111., VIII, 1890, p. 564, pi. 57, figs. 7-7C. 



43766. Hemitrypa perstriata Ulrieh. Cotype and figured sections. 



Keokuk (Miss.). Bentonsport, Iowa. 



Ulrieh, Geol. Surv. 111., VIII, 1S90, p. 564, pi. 57, figs. 6, 6a. 



43371. Hemitrypa proutana Ulrieh. Plesiotypes and figured 



sections. 

 Warsaw (Miss.). Warsaw, Illinois. 



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



43372. Hemitrypa proutana nodulosa Ulrieh. Cotypes. 



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



Ulrieh, Geol. Surv. 111., VIII, 1S90, p. 562, pi. 57, figs. 2-2C. 



43375. Hemitrypa tenera Ulrieh. Cotypes and figured sections. 



Middle Devonian. Davenport, Iowa. 



Ulrieh, Geol. Surv. 111., VIII, 1890, p. 559, pi. 44, figs. 7~7a; pi. 

 54, figs. IO-IOC. 



474. Heteroceras ? angulatum (Meek and Hayden). Holotype. 

 Fort Pierre (Cret.). Head of south branch of Cheyenne 

 River, South Dakota. 



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

 figs. 3a-c. 



See Helicoceras angulatum. 



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

 Fort Pierre (Cret.). Mouth of Big Cheyenne River, South 

 Dakota. 



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

 2a, 2b. 



See Ancyloceras? cheyenensis. 



