500 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



3643. Pholadomya ( Homomya ) audax Dana. Holotype. 



Carboniferous. Wollongong Point, Illawarra, New South 

 Wales, Australia. 



Dana, Wilkes U. S. Expl. Exped., X, 1849, p. 687, Atlas, pi. 3, 

 figs. ia-c. 



12397. Ph[o]ladomya (Goniomya) borealis Meek. Holotype. 



Nanaimo (Cret.). Nanaimo, Vancouver Island. 

 Meek, Trans. Albany Inst., IV, 1857, p. 42. 

 = Goniomya borealis 



22895. Pholadomya coloradoensis Stanton. Cotypes. 



Colorado (Cret.). Williams Creek, Huerfano Park, 

 Colorado. 



Stanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. 116, pi. 26, 

 fig. 2. 



3673. Pholadomya (Homomya) curvata Morris? Plesiotype. 



Carboniferous. Wollongong Point, Illawarra, New South 

 Wales, Australia. 



Dana, Wilkes U. S. Expl. Exped., X, 1849, p. 688, Atlas, pi. 3, 

 figs. 2a, 2b. 



25643. Pholadomya ( Homomya ) glendonensis Dana. Holotype. 

 Carboniferous. Glendon on the Hunter, New South 

 Wales, Australia. 



Dana, Wilkes I". S. Expl. Exped., X, 1849, p. 687, Atlas, pi. 2, 

 fig. 12. 



217. Pholadomya humilis Meek and Hayden. Cotypes. 



Jurassic. Southwest base of Black Hills, South Dakota. 



Meek and Hayden, Proe. Acad. Nat. Sci. Phila. for i860, p. 182; 

 Pal. Upper Mo., Smithsonian Cont. to Knowl. No. 172, XIV, 

 1S64, p. 104, pi. 4, figs. 3a, 3b. 



28956. Pholadomya inaequiplicata Stanton. Holotye and 



paratypes. 

 Jurassic. Divide between Fawn Creek and Gallatin 

 Valley, Yellowstone National Park. 



Stanton, lion. XXXII, Pt. II, U. S. Geol. Surv., 1899, p. 625, pi. 



74- fig- 4- 



7815. Pholadomya kingii Meek. Holotype and plesiotype. 



2 8957 • Jurassic. Near Lower Canyon of Yellowstone River, 



Montana, and Yellowstone National Park. 



White, Twelfth Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 1883, 

 p. 150, pi. 38, figs. 3a, 3b.— Stanton, Mon. XXXII, Pt. II, 

 U. S. Geol. Surv.. 1S99, p. 624, pi. 74, figs. 1-3. 



20251. Pholadomya occidentalis Morton. Plesiotype. 



Cretaceous. Hempstead County, Arkansas. 



Owen, Second Rept. Geol. Reconn. of Arkansas, i860, pi. 8, fig. 9. 



