BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1307 



Tryblidiuin erato (Billings). 



Metoptoma Erato Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 39 (adv. 



sheets, 1862); Geol. Canada, 1863, p. 145, fig. 145, fig. 95a, b.— Lesley, Geol. 



Sun'. Pennsylvania, Bop. P 4, 1889, p. .402, figs. 

 Tryblidiuin Erato "Whiteaves, Pal. Foss. Geol. Surv. Canada, 3, pt. 1, 1684, 



p. 31 (gen. ref.). 

 Black River (Lcray): Pauquettes Eapids, Ottawa River, Canada. 



Trybliditjm? Estella Whiteaves. See Archinacella estella. 



Tryblidiuin eubule (Billings). 



Metoptoma Eubule Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 38 (adv. 



sheets, 1862 ). 

 Tryblidium Eubule Whiteaves, Pal. Foss. Geol. Surv. Canada, 3, pt. 1, 1884, p. 3.1 



(gen. ref.). — Raymond, Ann. Carnegie Mus., 4, 1908, p. 217. 

 Chazy or Black River?: Phillipsburg, Quebec. 



Tryblidium exsertum Sardeson. See Stenotheca exserta. 



Tryblidium hyrie (Billings). 



Metoptoma Hyrie Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 87, fig. 79 



(adv. sheets, 1862). 

 Tryblidium Hyrie Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 1, 1894, p. 31 



(gen. ref.). 

 Ozarkian? (Levis — erratics): Point Levis, Quebec. 



Tryblidium indianense Miller. See Archinacella indianense. 



Tryblidium? instabilis Whiteaves. See Archinacella instabilis. 



Tryblidium madisonense Miller. See Cyrtocerina madisonensis. 



Tryblidium modestum Ulrich and Scofield. 



Tryblidium modestum Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1S97, p. 826, 



pi. 82, figs. 1 and 2. 

 Black River (Decorah): Near Cannon Falls, Minnesota. 



Tryblidium uiobo (Billings). 



Metoptoma Niobe Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 37, figs. 

 38a, b (adv. sheets, 1S62); Geol. Canada, Geol. Surv. Canada, 1863, p. 276, 

 fig. 281a, b.— Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 402, 2 figs. 



Triblidium Niobe Whiteaves, Pal. Foss., Geol. Surv. Canada, pt. 1, 1884, p. 31 

 (gen. ref.). 



Canadian (Beekmantown) : Phillipsburg, Quebec. 



Tryblidium nycteis (Billings). 



Metoptoma Nycteis Billings, Pal. Foss., Geol. Surv. Canada, 1865, p. 38, figs. 



39a, b (adv. sheets, 1862). 

 Tryblidium Nycteis Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 1, 



p. 31 (gen. ref.).— Miller, N. A. Geol., Pal., 1889, p. 429, fig. 720.— Sardeson, 



Jour. Geol., 11, 1903, p. 479, fig. 4. 

 Triblidium nycteis Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 604, 



fig. 803. 

 Canadian (Romaine): Mingan Islands, Canada. 



Tryblidium ovale Whitfield. 



Triblidium ovale Whitfield, Bull. Amer. Mus. Nat. Hist,, 1886, p. 305, pi. 24, 

 figs. 28-29.— Lesley, Geol. Sun. Pennsylvania, Rep. P 4, 1890, p. 1235, 

 fig.— Seely, Vermont State Geol., Rep. 7, 1910, pi. 62, figs. 28, 29. 



Canadian (Beekmantown): Fort Casein, Vermont. 



84243'— Bull. 92— vol 2—15 38 



