63 LiGNiTic Stage 63 



by the figure: whorls 10; 1-4 embryonic, smooth; the remaining 

 spiral whorls with about 7 costae crossed by about 6 very strong 

 revolving striae between which there are an equal number of fine 

 spirals. Labrum lirate within; columella very much twisted and 

 showing signs of plications, especially at the basal angle. Um- 

 bilicus not large, but well defined. The most peculiar feature of 

 this species is the imbricate appearance of the incremental lines. 

 This strongl}- reminds one of some of the Muricidae. The gen- 

 eral form of the species is much like Latinis rugatus Dall from 

 the Ballast Point Silex beds. 



''Locality. — Woods bluff." 



We are led to believe by new material that the striations on 

 the columella referred to above are due to the revolving striae 

 showing through the thin columella collosity, and hence do not 

 partake of the nature of those of Latinis. This is not far from 

 Tivphon elegaiitissimiis, but differs in having much finer and more 

 regular imbrications; with ribs, revolving lines, imbrications and 

 all extending from suture to suture. The humeral region of ele- 

 gantissimiis is nearl}' plain. 



Type. — Lea Memorial Colledlion, Acad. Nat. Sci., Phila. 

 Phyllonotus morulus, PI. 8, fig. 7. 



S3M1. See Bull. Am. Pal., vol. i, p. 214, pi. 20, fig. i, 1S95. 



Miwe.v morulus Har., Proc. Ac. Nat. Sci. Phila., 1896, p. 476, pi. 

 20, fig. 12. 



Conrad'' s original description. — See this work, vol. r, p. 214. 



Conrad's original specimen, the type, was doubtless obtained 

 from Matthew's landing along with Volutilithes liinopsis, V. ru- 

 gatus, and Exilia pergracilis, though he did not state, nor did he 

 doubtless know its exadl provenance. It is, however, finely de- 

 veloped at Woods bluff, as shown by the accompanying figure. 



Cornulina armigera, PI. 8, figs. 8-1 1. 



Syn. j\felo!i,i^i)ta? armigera Con., Foss. Sh. Tert. Form., No. 3, p. 30, 

 vSept. 1833. 

 FicsNS taitii Lea, Cent, to Geol., p. 152, pi. 5, fig. 159, Dec. 1S33. • 

 Monoceros arinigerus Con., Foss, Sh. etc., 2d ed. p. 37, pi. 15, fig. 



