(JASTEKOPODA OF THE EOCENE MAltLS. 225 



DOLIID^. 



Genus FICUS Rosseau. 



FiCUS PENITUS ? 



Plate XXXIV, Fig. 5. 



Pyrulapenitus Conrad: Foss. Shells Tert., 1st ed., p. 33. 



Pyrula tricarinata Con.: Foss. Shells Tert., aded., p. 38, PI. xv. Fig. 6. 



Pyrula cancellata and P. eleganUssima Lea: Cont. to Geol., pp. 154, 155, PI. v. 



Figs. 160, 161. 

 Sycotypus penitus Conrad: Am. Jour. Conch., vol. 1, p. 36. 

 Priscoficun Smithiif (Sowerby) Conrad: Meek, Check List Eocene Foss., p. 16. 

 Pyrificus Smithii (Sow.) Meek : Geol. N". J., Newark, 1868, p. 733. 



A single cast of a specimen, probably of this species, has been ob- 

 tained from the upper beds at Shark River. It presents the general fea- 

 tures of the species in all respects as to form and proportions, differing only 

 in the surface characters which here consist of revolving lines placed at 

 somewhat regular distances and are sharply elevated with concave spaces 

 between, being evidently only the stronger lines of the shell, while the 

 finer intermediate ones have not been visibly retained on the cast. But, on 

 examination with a strong glass, remains of the finer ones are seen. The 

 transverse lines, those parallel to the border of the aperture, are strong, irreg- 

 ular lines, although placed at nearly equal distances from each other. The 

 spire of the specimen is somewhat unusually elevated for the species, and 

 the top of the body volution flattened, with an angle separating it from the 

 general surface of the volution. This, however, is principally the efi"ect of 

 compression, and in the shells as they occur at Claiborne, Alabama, there 

 is frequently a marked angle at this point. The species, as it occurs at 

 Claiborne, is extremely variable in surface markings; some examples being 

 finely and evenly cancellated over the entire surface by the transverse and 

 longitudinal lines, while others will have a few of the spiral or longitudinal 

 lines elevated into sharp carinse forming deeply concave spaces between 

 marked by finer lines. Others are found which present all the gradations 



MON XTIII 15 



