MAZATLAN TJNIVALTES 249 



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

 Tablet 1165 contains tlie specimen. 



315. ?? LioTiA C-B-Adamsii, n. s. 



?? L. t. tenuissiina, diaphand, alba; turrltA, anfractihus iii. 

 tumentibus, superne subangulatis ; liris radiantibvs (in anfr. nit. 

 xxiij a llrulis spiralibits circiter viii. nodulosis elecjantissime 

 cancellatis ; anfr. prima et dimidio Icevihus, tumentibus ; liris 

 radiantihus in ba^i evanescentibus ; umbilico parvo ; apertura 

 subcirculari, peritremati contimio, ab anfr. penult, vix inter- 

 rupto. 



Although, this is clearly a young shell, its characters are so 

 weU marked and distinct from any other known Mazatlan 

 species, that it has been thought best to preserve a remem- 

 brance of its beauty in connexion with the name of the most 

 accurate and deeply lamented Prof. C. B. Adams. It has the 

 texture of Vitrinella, but is distinguished by its tui-rited form, 

 and by the large size and short length of its apical x^ortion, 

 which occupies a whirl and a half, instead of three minute 

 whirls as is customaiy in that genus. The rest of the shell is 

 beautifully decussated by radiating lira;, obsolete on the base, 

 knotted by revolving lirulae, three of which appear on the base. 

 Both labrum and labium are extremely thin. It may possibly 

 belong to Eissoidse. Long. '0^, lat. '022, div. 70°. 



Sab. — Mazatlan ; 1 young sp. off" Spondylus ; L'pool Col. 



Tablet 1166 coMains the specimen. 



316. ? LiOTiA , sp. ind. 



Tablet 1167 contains a fragment of a somewhat elevated 

 aheU, with tlie apex flattened. The first whirl is large and 

 smooth as in ??L. C-B-Adamsii ; but the sculpture is extremely 

 strong, with stout transverse tubercular ridges and spiral 

 decussating lira;. It is distinguished from ChrysaUida by the 

 flat, dextral apex. 



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



