i2o Bulletin 29 284 



Strombus pugilis Dall, (in part) Trans. Wagner Inst. Sci.,vol. 3, pt. 1, 

 p. 177, 1890. Not pugilis Linne" 



This shell has a general resemblance to ^. gracilior Sower - 

 by, living off Panama. The spirals may, as in the type, cover 

 the entire surface or be obsolete except on the spire. The last 

 whorl may be deeply sculptured with grooves and cords or al- 

 most smooth. The characters of the spire are the most contant 

 feature. 



Localities.- — (Exp'd '16) Bluffs 1 and 3, Cercado de Mao; 

 Zone E, Rio Gurabo at Los Quemados; Zone I, Rio Cana at 

 Caimito. 



Strombus pugiloides Guppy 



Plate 20, Figure 6 



Strombus pugilis Guppy, Quart. Jour. Geol. Soc, vol. 22, p. 287, 1866. 

 Strombus pugilis Gabb, (in part) Trans. Amer. Phil. Soc, vol., 15, p. 



233. 1873. 

 Strombus pugiloides Guppy , Geol. Mag. New. Ser. Decade 2, vol. 1, 



p. 433, 1874. 

 Strombus pugilis Dall, (in part) Trans. Wagner Inst. Sci., vol. 3, pt. 1, 

 p. 177, 1890. 



Shell resembling S. pugilis Linne, abundant on the Monte 

 Cristi beach, but the fossil is devoid of spines and smaller, meas 

 uring 60X36 against 83 X 52 mm. The recent is the descendant 

 of S. pugiloides just as bituberculatus is of haitensis. 



Locality. — (Exp'd '16) Rio Cana on the Guayabinto Mao 

 road. 



Strombus maoensis, n. sp. 

 Plate 21, Figure 1 



Shell rather large, remaining whorls eight, the last five ail 

 tuberculate. On earlier whorls the tubercles are small, close-set 

 and over-run by spiral threads; they gradually increase in size 

 and diminish in number so that on the dorsal side of the last 

 whorl there are but three or four very strong, conspicuous spines, 

 and on the oral surface of the last whorl the spines are entirely 

 obsolete. The spiral sculpture on the body whorl consists -of 



