ORTMANN : TERTIARY INVERTEBRATES. 209 



139. BUCCINUM (COMINELLA) OBESUM VAR. MINOR (Philippi). 



PI. XXXIII, Fig. 18. 



1887 Fus2ts obesus var. minor Philippi, Tert. & Quart. Verst. Chiles, p. 



48, pi. 3, f. 4b. 

 1900 Buccinttm obesuni Ortmann, in : Amer. Journ. Sci., v. 10, p. 379. 



Shell broadly oval, swollen. Spire short, conical. Whorls 5, convex, 

 slightly depressed in the upper part, near the suture, with about 14-15 

 longitudinal ribs, which disappear suddenly on the upper part of the whorls, 

 some distance from the suture, and run down, on the last whorl, almost to 

 the canal. Surface of shell with numerous revolving striae, which are 

 somewhat unequal. Last whorl large. Mouth ovate, upper end slightly 

 canaliculate, lower end truncate, with a broad and very short, reflected canal, 

 forming avarix on the columella. Inner lip thin, outer lip smooth within. 



Height, 19 mm; diameter, 14 mm. 



Remarks: This is also a Cominella, and I have no doubt that it is con- 

 generic with the foregoing. The short reflected canal forming a varix is 

 quite unlike the long canal of Fusus, and agrees well with that of B. 

 annce, and the genus Buccinmn in general. 



It may be remarked that if belonging to Fusus the specific name 

 would be preoccupied by Fusus obesus Michelin (subgenus Euthria, see 

 Zittel, 1885, p. 272). 



Record of specimens : Mouth of Santa Cruz River, 3 sp. 



Distribution: Chili : Matanzas and Cucao (Phil.). The typical form of 

 B. obesum is found at Navidad. 



Gen. CHRYSODOMUS Sw. 

 140. CHRYSODOMUS CANCELLATUS (Ortmann). 



PI. XXXIV, Fig. 2"-". 



1900 Fusus c. Ortmann, in : Amer. Journ. Sci., v. 10, p. 375 (non F. 

 c. Sowerby). 



1901 F. ortmanni Cossmann, in: Rev. crit. Paleozool., v. 5, July, 1901, p. 

 151, footnote (3). 



Shell small, fusiform, elongate. Spire a little shorter than the last 

 whorl. Whorls convex, surface ornamented by revolving and longi- 



