112 BUI,I.KTIN 31 112 



par les lamelles concentriques. Elle differe de la Z. bisculpta Meyer avec 

 laquelle elle a quelque d'analogie par le epaisseur de la coquille, les 

 lamelles regulieres etc. (Coll. rnon Cabinet.) 



This we regard as some extraneous form that de Gregorio 

 had mixed with his Claiborne matter while working up his 

 "Monograph". Dall seem^ed inclined at first to regard it as syn- 

 onymous with. po77iilia (seep. 1364, III, Trans. V/ag.) and later 

 suggested its possible relationship to claibornensis (see p. 1374, 

 op. cit. ) No such form has shown up in any of our Claiborne 

 collections. 



Lucina hamatus Dall, PI. 37. Fig. 24. 



Phaicoides {Here) hamatus Dall, Trans. Wa6, III, 1903, p. 1364, pi. 

 50, fig. 9- 



DaWs original descfiption. — Shell small, plump, with small, high, 

 prosogyrate beaks ; dorsal areas strongly emphasized by an impressed sul- 

 cus on their ventral margins which terminates distally in an indentation of 

 the margin whigh, as it were, loops up the line of the profile ; surface sculp- 

 tured with incremental lines and regularly spaced, rather distant, slightly 

 elevated and recurved concentric lamellae; lunule small, cordate, deep, over- 

 shadowed by the gyrate umbones ; escutcheon none ; anterior end of the 

 valve below the anterior dorsal area projecting, subangular ; hinge and ad- 

 ductor scars normal. Height 13.6, length 14.0, diam. lo.o mm. 



Eocene of the lower bed at Claiborne Bluff, Ala. ; Lea. 



Our various collections from the base of the Bluff have un- 

 fortunately brought to light nothing corresponding to this species. 

 The credit of its collection Dall gives to Lea, but, so far as we 

 are aware, none of L/ca's fossils were from the basal (St. Maurice) 

 bed. It is within the range of mere possibility that this is a 

 pathologic specimen of JL. claibornensis, a very common species 

 at this horizon and locality, and with surface markings agreeing 

 well with the characters enumerated above. 



Various stocks of small Lzicinas. 

 In taking up the smaller lyucinas of the St. Maurice and 



