INSTITUTE OF SCIENCE, PHILADELPHIA. II 



umbilical region indented but not perforate ; close to the aperture the last 

 whorl descends a short distance ; the constriction behind the lip is not deep, 

 though obvious ; aperture wider toward the outer side, the pillar and the end 

 of the outer lip where it joins the body whorl are rather close together and 

 the interval is covered with a rather thick, smooth callus over the body whorl ; 

 lip stout, thick, reflected, the reflection somewhat expanded over the umbilical 

 region of the base. None of the specimens show the inner face of the lower 

 lip. Alt. 12.5; max. diam. 15.O; min. diam. 12.0 mm. 



Ballast Point silex-beds; Dall and Burns. 



This species is rare; only four specimens have been found. The one fig- 

 ured had lost the shelly matter of the base and aperture and was unique ; the 

 others have been found since the figure was made and are all defective, but 

 enable the description to be made tolerably complete. 



Helix haruspica n. s. 

 Plate I, figures 7 c, 7 d. 



Shell large, thin, little elevated, with five and a half whorls ; surface with 

 more or less broken incremental wrinkles, crossed by fairly distinct fine grooves 

 rather sparsely distributed ; periphery furnished with a distinct carina, above 

 which the whorl is somewhat compressed, and on which the suture runs ; at 

 the termination of the coil the end of the last whorl falls below the carina for 

 a short distance ; suture distinct ; upper whorls less rounded than the last 

 one ; base moderately rounded, perforate when young, the umbilicus covered 

 by an extension of the inner lip in the adult ; aperture large, imperfect in all 

 the specimens ; lips moderately reflected, thin, sharp ; constriction behind the 

 reflection hardly noticeable near the suture (elsewhere ?), lower lip wanting in 

 the specimens ; inner and outer lip connected with a thin callus over the body 

 whorl. Alt. of shell from base to vertex, the aperture not taken into account, 

 12.0 mm., but with the lower lip perfect it would have been 15.0 or more, 

 probably; max. diam. 24.0; min. diam. 19.5 mm. 



Ballast Point, HiUsboro Bay, silex-beds ; collected by Mr. J. Shepard and 

 the writer. 



This is the largest Helix of the locality so far discovered, and, though 

 imperfect, is recognizable. When living it must have much resembled some 

 of the West Indian carinated forms, like acutissinia Lam. These last have 

 the shagreened surface, but it seems as if the callus within the inner lip seen 

 in the fossils has differentiated into separate tooth-like projections in some of 

 the recent forms, while persisting hardly changed in others. It may be, how- 

 ever, that the lower lip of this species will show internal denticles when it is 

 found. As what remains of H. haruspica harmonizes well with others above 

 described of the section Jeanneretia, I have not thought it worth while to refer 

 it elsewhere, especially as I by no means claim expertness in the discrimina- 

 tion of the myriad sections and subgenera which have been proposed in this 

 family. 



