AVELLANA CONCINNA. 



339 



boine ; in bed representing Formation No. 4 of the 

 Nebraska Cretaceous series.] 



Front view of Scaphites Nodosus. The fine lines represent shading. 



The specimen figured shows the remains of two rows of tubercles on the dorsum 

 — one on each side. They are much worn, and have been unfortunately omitted 

 altogether by the artist. 



Avellana Concinna. 



[Actceon concinna. — Hall and Meek, Mem. Am. Acad. 

 Arts and Sci., Boston, vol. v. N. s. p. 388, pi. ii. fig. 6. 



The specimen of this species, first figured in the paper 

 above cited, is either a young individual, or the outer lip 

 was broken away ; for that now before me, which is 

 evidently the same species, has a strong thickened outer 

 lip ; consequently, it cannot be a true Actceon, but agrees 

 more nearly with the characters of the genus Avellana. 



Locality and position . — Same as last.] 



z 2 



