CONTRIBUTION TO THE PALEONTOLOGY OF TRINIDAD. 63 



Altitude of Soldado shell 6.5, length approximately 10.5 mm. 

 Locality. — This species is very common in the Eocene of Maryland and 

 Virginia. Bed No. 8, Soldado Rock, Gulf of Paria. 

 Geological horizon. — Lignitic Eocene. 



Corbula (Cuneocorbula) weaveri new species. Plate IX, Figure 28. 



Description. — Shell small, sharply carinate, subtriangular, not very convex 

 anterior end rounded, posterior end acutely pointed; sculpture of about five con- 

 centric, rather rounded ridges and alternate deep groovings. 



Length of shell 8, height 5.5, thickness of one valve 2 mm. 



Remarks. — In its general outline this shell is not unlike the Midway C. sub- 

 compressa Gabb ; but the anterior slope is not rounded as in that species, and the 

 sculpture is decidedly bolder in the Soldado form. Of the described Lignitic 

 species, it is nearest C. subengonata, but is shorter and more triangular and more 

 strongly sculptured. 



This shell is named in honor of Mr. Paul Weaver, of Brooklyn, N. Y., who 

 assisted Mr. Veatch in collecting at Soldado Rock. 



Locality.— Bed No. 8, Soldado Rock, near the Serpent's Mouth in the Gulf of 

 Paria. 



Geological horizon. — Lignitic Eocene, about equivalent to the Nanafalayan. 



(Bothrocorbula) smithiana 



ures 



Description. — Shell small, nearly equilateral, very solid and thick, convex, 

 with a very deep cavity in the interior, general form ovate, posterior slope cari- 

 nate, posterior end pointed, slightly rostrate; anterior gently rounded; beaks low 

 and small; sculpture of about twelve narrow, concentric, rather sharply edged 

 ribs with wider interspaces extending from the basal margin to a short distance 

 below the beaks which are nearly smooth. Only a single (left) valve was found. 



Length of shell 8.5, height 5, diameter 6 mm. 



Remarks. — This shell is of the general type of C. viminea Guppy from the 

 Oligocene of Jamaica and Haiti, and like it belongs to Gabb's section Bothro- 

 corbula, of which C. viminea is the type. Shells of this section of the genus are 

 found in the Antilles from the Oligocene to the recent faunas. Two species 

 extended northward to the Chipola and Oak Grove beds of the Florida Oligocene, 

 and one species occurs in the Pliocene of the Caloosahatchie, Florida. 



On comparing C. smithiana with Dr. Guppy's viminea, the latter is at once 

 seen to be shorter, higher, more boldly sculptured, and is a much larger shell. 



The species is named in honor of Captain Smith of the S. S. Viking, Port of 

 Spain, Trinidad. 



Locality.— On the shore at Brighton, Trinidad, 1000 feet west of the pier, in 

 an impure asphalt. 



Geological horizon. — Upper Oligocene, about equivalent to the Chipolan of 

 Florida. 



