MAZATLAN UNIVALVES 447 



566. ScALAHiA , sp. ind. (a.) 



Tablet 2038 contains a minute shell of four whirls, measur- 

 ing "045 by '023, and a fragment displaying sculpture. It is 

 elongated, with very numerous (about 15) rounded varices, 

 strongly striated spirally. 

 Sah. — Mazatlan ; 3 sp. on Spondylus ; L'pool Col. 



567. ScALAEiA , sp. ind. (h.) 



Tablet 2039 contains a minute shell, measuring "06 by '037, 

 consisting of 6 whirls, of which 4 are smooth and nuclear. It 

 differs from the corresponding portion of S. suprastriata in 

 having more numerous (12 sharp) varices, with smooth inter- 

 stices. 

 jETai.— Mazatlan ; 1 sp. off Spondylus ; L'pool Col. 



568. SCALAEIA EAEICOSTATA, n. S. 



S. t. elongata, gracili, anfractihus parum rotundatis ; snturd 

 parum impressd ; costis paucis, circiter viii. haud semper con- 

 venientibus, angustis, haud elevatis ; interstitiis Icevibus ; um- 

 hilico nullo. 



The only specimen found, of 6 whirls, though yoimg, seems 

 to differ from the early state of all known West-coast species. 

 Long. '125, long. spir. '085, lat. '06, div. 33". 

 Mab. — Mazatlan ; 1 sp. off Chama ; L'pool Col. 



Tablet 2040 contains the specimen. 



Subgenus CIESOTEEMA, Morch. 



S. 8f A. Ad. Gen. vol. i. p. 223. Shell solid ; varices irregular ; 

 whirls generally cancellated. 



569. ClESOTEEMA FUNICULATA, ?n. S. 



C. t. suhelongatd, graciliore, albd ; marginibus spires rectis ; 

 anfr. ix, pro2)e suturam valde impressam acute angulatis ; 

 costibus variantilus (xv. — xx.) Jiaud acutis, angustiorihus, ad 

 angulam coronatis, supra basin vix continuis ; anfr. ult. costis 

 plei^umque obsoletis, varicibus paucis validis ; costd rotundatd, 

 suturam continuante, circa basin tumente, a costis radiantibus 



