264 CALIFOKNIA ACADEMY OF SCIENCES. 



275. Scala hemphilli Dull. 



Scala hemphilli Dall, Proc. U. S. Nat. Mus., Vol. I, 187S, p. 16. Cooper, 7th Ann. Rept. Cal. 

 St. Min., 1888, p. 263. 



Shell resembling robust 3". iincia; nine to twelve varices, coronated behind near suture: 

 surface of whorls beneath the varices longitudinally delicately sculptured with alternate grooves and 

 riblets. Deflection 30 degrees. 



Distinguishable from S. lellastriata by less prominent spiral sculpture and by 

 a less deflection; from other members of the genus found here by its deflection and 

 the spiral sculpture. . The specimen described was identified by Dr. Dall. 



One immature specimen from the upper San Pedro series of San Pedro. 



Pleistocene. — San Diego (Dall): San Pedro (Arnold). 

 Pliocene. — San Diego well (Dall). 



276. Scala hindsii Carpenter. 



Scalaria hindsii CpR., Proc. Zool. Soc, 1856, p. 165; Brit. Assn. Rept., 1856, p. 336; 1863, p. 660. 



Keep, West Coast Shells, p. 49, fig. 31, 1892, =5". subcoronata Cpr., i^fide Cooper, Bull. 



No. 4, Cal. St. Min. Bureau, Part 3, 1894, P- 3^)- 

 Scala hindsii Cpr., Williamson, Proc. U. S. Nat. Mus., Vol. XV, 1892, p. 209. 



Shell small, turreted, thin; whorls eight, evenly convex; varices eight to twelve, sharp, thin, 

 sometimes reflexed, very prominently coronated just anterior to suture; suture deep, distinct; aperture 

 subcircular; lip slightly thickened; inner lip slightly incrusted. 



Dimensio7is. — Long. 11.5 mm.; lat. 5.2 mm.; defl. 27 degrees. 



Distinguishable from 8. indianorum by smaller and thinner shell, fewer, 

 thinner, and more coronated varices, and deeper suture; distinguishable from 

 S. iincta by smaller shell, and fewer and more coronate varices; distinguishable from 

 8. crebricost((ta by fewer and more coronate varices. Several specimens were identified 

 by Dr. Dall. 



Rare in upper San Pedro series at San Pedro, Deadman Island, Crawfish 

 George's, and Los Cerritos; also reported from lower San Pedro series at Deadman 

 Island and San Pedro. 



Living. — Santa Barbara (Jewett): San Pedro (Williamson): Panama 

 (Carpenter). 



Pleistocene. — San Pedro (Arnold). 



277. Scala indianorum Carpenter. 



Plate V, Fig 4. 



Scala indianorum Cpr., Brit. Assn. Rept., 1863, p. 660; Ann. & Mag. Nat. Hist., 3rd Ser., Vol. XV, 

 1865, p. 31. Tryon, Man. Conch., Vol. IX, p. 70, PL XIV, fig. 48, 1887. Cooper, 

 7th Ann. Rept. Cal. St. Min., 1888, p. 263. Keep, West Coast Shells, p. 50, 1892. 



Scala indianonwi Cpr., Williamson, Proc. U. S. Nat. Mus., Vol. XV, 1892, p. 210. 



