GASTEROPODA. 



TYPHIS, Montf. 



T. ANTIQUUS, D. 8. 

 PI. 18, Fig. 31. 



SHELL small, spire high, whorls five (or six ?) angular, subeari- 

 nate on the shoulder, and marked by several varices, number 

 unknown. Varices small, obtusely angular, and not very elevated ; 

 one, or perhaps two, elongated tubercles between each pair of 

 varices ; tubuli short, open. Last tube broad, short, circular at 

 its end. Mouth pyriform, acute below, rounded above. Outer 

 lip thickened, canal closed, anterior extremity unknown. Surface 

 marked only by lines of growth. 



Length, about .6 inch. 



Locality: Two imperfect specimens have been found by Mr. Mathcwson at Bull's 

 Head Point, northeast of Martinez (Div. B.). They are both very much mutilated, 

 the upper whorls being entirely denuded of shell and the anterior end of the canal 

 broken. The species is, however, interesting, as being the oldest known speoios 

 of the genus. 



FUSUS, Lam. 

 F. MARTINEZ, 11. B. 



PI. 18, Pig. 82. 



SHELL fusiform, elongated; whorls six, very convex, suture 

 distinct, spire high. Canal straight, aperture unknown. Surface 

 marked by large longitudinal ribs, which commence a little below 



(82) 



