94 MAZATLAN BIVALTES 



128. CabditJM , sp. ind. (I.) 



Tablet 456 contains a fragment of a sKeU of moderate size 

 which may possibly be C. triangnlatnmSo.^. (St. Elena and 

 Isle Plata, Cuming.) It has very broad flat ribs, with 2 rows 

 of tubercles on each. These communicate with decussatmg 

 lines in the interstices. 

 _g;-„5._M:azatlan ; from sheU washings ; L'pool Col. 



129. Cardium sp. ind. (c.) 



Tablet 457 contains a fragment of a moderate sized Cardium, 

 having relationship with C. pseudofossHe, Eve. (Behring s Sir.) 

 It is of a dead white, with very close, stout, numerous, rounded 

 ribs, barely nodulous. 

 Hah.— Mazatlan ; from sheU washings ; L'pool Col. 



130. Caedium sp- ind. (d.) 



Tablet 458 contains a fragment of a thin white sheU with 

 perfectly triangular, rather distant ribs with flat sides. The 

 interstices are smooth, bounded by clearly marted lines. 

 JTai.— Mazatlan : from sheU washings ; L'pool. Col. 



131. Caedium ■, sp. ind. (e.) 



Tablet 459 contains 2 fragments, something like the last, but 

 coloured, and with the ribs rounded and slightly nodulous, 

 a-ai.— Mazatlau ; from shell washings ; L'pool Col. 



132. Caedium — -W. ind. (f.) 



Tablet 460 contains 2 minute fragments, with very narrow 

 smooth rounded ribs, very far apart. Interstices broad, smooth, 

 bounded by distmct bnes. 

 Sai.-Mazatlan ; from sheU washings ; L'pool Col. 



133. Caedium alabasteum, n. s. 



C t parvA, albd, nitidd, suhdiaphanA, suhceqmlaterali, 

 elongatd;costiscirciterxym.,quarum quatuor l^^j^^'jl' 



