ARNOLD] FOSSIL MOLLUSKS FROM CALIFORNIA 443 



4b. View of exterior of imperfect dorsal valve of same species; altitude, 



18 mm. 

 4c. View of exterior of dorsal valve of same species ; altitude, 19 mm. 

 4<i. View of exterior of ventral valve of same species; altitude, 28 mm. 



Plate LIV 



Fernando (Pliocene) Gasteropoda 



Fig. I. Trochita radians Lamarck. Cat. No. 165,310, U. S. N. M. View of 

 top of imperfect specimen ; maximum diameter, 20 mm., X 2. 

 Fugler Point asphalt mine, near Gary; locality No. 4475. Char- 

 acteristic of the upper Miocene and lower Pliocene in this region. 

 2. Pricnc orcgoncnsis Redfield. Cat. No. 165,262, U. S. N. M. Aper- 

 ture view of young specimen ; altitude, 46 mm. Waldorf asphalt 

 mine ; locality No. 4473. This species is also found recent. 

 3. Lunatia lewisii Gould. Cat. No. 165,264, U. S. N. M. Aperture 

 view of young specimen ; altitude, 23 mm., X 2. Waldorf asphalt 

 mine; locality No. 4473; also known recent. 



4. Thalotia caffca Gabb. Cat. No. 165,298, U. S. N. M. Back view; 



latitude, 29 mm. Fugler Point asphalt mine, near Gary; locality 

 No. 4475 ; also known recent. 



5. Thalotia caffca Gabb. Cat. No. 165,297, U. S. N. M. View of side 



of fragment, slightly tilted up; latitude, 21 mm.; same locality as 



fig- 4- 



6. Lymnaa alamosensis, new species. Cat. No. 165,426, U. S. N. M. 



Type. Aperture view ; altitude, 6 mm., X 6. Fresh-water beds 

 1 mile southeast of bench-mark 425, Los Alamos Valley; locality 

 No. 4483. 



7. Lyrnncca alamosensis, new species. Cat. No. 165,426, U. S. N. M. 



Aperture view of young specimen; altitude, 3.5 mm., X 6. Same 

 locality as fig. 6. 



8. Cadnlus fusiformis Sharp and Pilsbry. Cat. No. 165,267, U. S. 



N. M. Side view; longitude, 10 mm., X 3. Waldorf asphalt 

 mine ; locality No. 4473 ; also known recent. 



9. Cancellaria crazvfordiana Dall, var. fugleri, new variety. Cat. No. 



165,322, U. S. N. M. Type. Aperture view; altitude, 22.5 mm., 

 X 2. Fugler Point asphalt mine, near Gary; locality No. 4475. 



10. Ocinebra micheli Ford, var. ivaldorfensis, new variety. Cat. No. 



165,261, U. S. N. M. Type. Altitude, 11 mm.; aperture view, X 3. 

 Waldorf asphalt mine ; locality No. 4473. 



11. Turritella cooperi Carpenter. Cat. No. 165,273, U. S. N. M. Alti- 



tude, 34 mm. ; aperture view, X 2. Waldorf asphalt mine ; locality 

 No. 4473. Common in the Pliocene and Pleistocene. 



12. Drillia ivaldorfensis, new species. Cat. No. 165,270, U. S. N. M. 



Type. Aperture view of imperfect specimen ; altitude, 18.5 mm., 

 X 2. Waldorf asphalt mine ; locality No. 4473. 



13. Drillia johnsoni Arnold. Cat. No. 165,263, U. S. N. M. Altitude, 



34 mm. ; back view, X 2. Waldorf asphalt mine ; locality No. 

 4473 ; also found fossil at San Pedro. 



