310 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



43369. Helopora fragilis Hall. Plesiotypes and figured sections. 



Clinton (Sil.), Hamilton, Ontario, Canada. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 643, figs. 18, a-e. 



43569. Helopora harrisi James. Plesiotypes. 



Richmond (Ord.). Waynesville, Ohio. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. I, 

 1893, p. 195, pi. 3, figs, n, Tib, lie, 12. 



43370. Helopora lindstromi Ulrich. Cotypes and figured section. 



Silurian. Island of Gotland, Sweden. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 643, figs. 18, f, g, h. 



43677. Helopora mucronata Ulrich. Holotype. 



Trenton (Ord.). Cannon Falls, Minnesota. 



Ulrich, Jour. Cincinnati Soc. Nat. Hist., XII, 1890, p. 192, fig. i6e; 

 Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. I, 1893, 

 p. 193, pi. 3, fig. 10. 



43567. Helopora quadrata Ulrich. Cotypes. 



Trenton (Ord.). Near Cannon Falls, Minnesota. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. I, 

 1893, P- !93- %• IO - 



38137. Hemeristia occidentalis (Dana) ? Plesiotype. 



Upper Coal Measures. Mazon Creek, Grundy County, 

 Illinois. 



Scudder, Mem. Boston Soc. Nat. Hist., Ill, 1S85, p. 342, pi. 31, 

 fig. S; Foss. Insects N. America, I, 1890, p. 306, pi. 17, fig. 8. 



12241. Hemiaster calvini Clark. Holotype. 



Shoal Creek (Lower Cret.). Travis County, Texas. 



Clark, Bull No. 97, U. S. Geol. Surv., 1893, p. 90, pi. 49, figs. 2a-i. 



191 14. Hemiaster dalli Clark. Holotype. 



Washita (Lower Cret.). Bexar County, Texas. 



Clark, Johns Hopkins Univ. Circ. No. 87, 1891, p. 77; Bull No. 97, 

 U. S. Geol. Surv., 1893, P- $9> pi. 48, figs. 2a-2e. 



331. Hemiaster humphreysanus Meek and Hayden. 



Holotype and paratype. 

 Fort Pierre (Upper Cret.). One hundred and fifty mijes 

 from mouth of Yellowstone River, Montana. 



Meek and Havden. Proc. Acad. Mat. Sci. Phila.,for 1857, p. 147. — 

 Meek, Rept. U. S. Geol. Surv. Terr., ix, 1876, p. 5, pi. 10, 

 figs, ia-g.— Clark, Bull. No. 97, U. S. Geol. Surv., 1893, p. 88, 

 pi. 48, figs. ia-f. 



2208. Hemiaster stella (Morton). Plesiotype. 



Upper Cretaceous. Timber Creek, New Jersey. 



Clark, Bull. No. 97, U. S. Geol. Surv., 1893, p. 84, pi. 46, figs, 

 ia-d. 



