8 BUI.LETIN I I 8 



Aldricli' s 07'iginal description. — Op. cit. 

 We are able to add little to Aldrich's remarks, 

 which see. The obliquity of the growth lines is 

 rather noteworthy however. It lacks the strong, 

 sharply incised spiral lines of ligniticus, though faint ones are 

 numerous. Our figure of the shell is taken from a slightly dif- 

 ferent standpoint than that given on pi. 3, vol. i. 



Locality. — Ala.: Gregg's landing. 



Type. — Aldrich's colledlion. 



Specimen figured. — Aldrich ' s colle(5lion . 

 Scaphander ligniticus, PI. i, fig. 10. 



Syn. S. ligniticus Aid., Bull. Am. Pal., vol. 2, p. 177, pi. 3, fig. 4, 1897. 

 Aldrich' s original descriptio7i. — i^Op. cit. ) 



We have not seen Aldrich's type of this specimen 

 but we have several very good specimens, young 

 and old, belonging to it. A smooth shining, 

 porcelaneous incrustation is found covering the specimens from 

 4 miles above Hamilton bluff. 



Localities. — Ala.: Woods bluff; \}{ mi. W. S. W. of 



Chodtaw Corner; 4 mi. above Hamilton bluff. 

 Type and specimen figured. — Not in- the type lot of Lignitic 

 Eocene materal sent by Aldrich. He mentions, 

 loc. cit., a specimen in the National Museum. 



ATY8. 

 Atys robustoides, PI. i, fig. 11. 



Syn. A. robustoides Aid., Bull. Am. Pal., vol. i, p. 58, pi. 3, fig. 4, 4a, 



1895. 

 Aldrich' s original description. — Op. cit. 

 Locality.- -h.-L,K.\ Gregg's landing. 

 Type atid specimen /ig2cred. — Aldrich's colledlion. 



CYLICHNA. 

 Cyliclina sylvserupis, n. sp., PI. i, fig. 12. 



Syn. C. galba Aid. non. Con., Geol. Sur. Ala., Bull. No. i, p. 53, 1886. 



Specific description.— VovxQ. 2in&s\z& a.s indicated by the figure; 

 surface more or less spirally striate above, medially nearly smooth 

 or microscopically striate, below with striae becoming coarser 

 and deeper to base; spire involute; posterior narrowing; columel- 

 lar coUosity depressed medially forming on either side low faint 

 ridges or folds as in Cylichnella, the lower after curving down- 



