AKT. 22 MIOCENE GASTROPODS AND SCAPHOPODS MANSFIELD 13 



base. Sculpture on the lower two-thirds of last whorl consists of 

 sharp, low, spiral threads with interspaces more than twice their 

 width. Columella channelled near the base; below a sharp fold 

 borders the canal. The specimen is partly crushed on the lower half 

 and part of the shell is missing. 



Dimensions: Type (U. S. Nat. Mus. Cat. No. 352646) measures: 

 Altitude about 40 mm. ; maximum diameter 22 mm. 



This new species very closely resembles an undescribed species oc- 

 curring in both the Baitoa and Cercado formations of the Dominican 

 Republic and the Thomonde formation of the Republic of Haiti ; but 

 differs from these in possessing a coronate-carinate spiral on tlie 

 early whorls and the absence of strong spirals within the anal 

 fasciole. 



Occurence. — Middle of lower Miocene: Manzanilla Coast, Trini- 

 dad, British West Indies. 



CONUS MULTILIRATUS WALLI, new subspecies 



Plate 2, figs. 1, 9 



The new subspecies differs from Gonus rtiuUiliratus Bose in the 

 following respects : The shell is less biconic, and has a proportionally 

 shorter and more evenly conic spire; the spire is less attenuated to- 

 ward the apex ; the Avhorls less excavated and marked by a less promi- 

 nent carina behind the suture ; the body whorl tapers more evenly to 

 the base and is less concave at its lower part. 



Dimensions: Type (U. S. Nat. Mus. Cat. No. 352647) measures: 

 Altitude 21 mm. ; greatest diameter 11 mm. ; altitude of spire 6 mm. 



Type locality: 9219, Guaico-Tamana Road, 2 chains east of mile 

 13 from junction with Eastern Main Road, Trinidad, British West 

 Indies. J. A. Bullbrook, collector. 



Occurrence. — Middle of lower Miocene: In flood-wash; 9212, 1 

 mile south of Brasso. 



The new subspecies is named in honor of G. P. Wall, a pioneer 

 geologist in Trinidad. 



CONUS, species indeterminable 



Fragments and casts of the genus Gonus occur at stations 9197-a, 

 8301, 8299, 9205, 9212, 9219, 9220, and 9221. These are too poorly 

 preserved for specific comparison. 



Genus TURRICULA Schumacher 



TURRICULA SPRINGVALEENSIS. new species 



Plato 2, fig. 2 



The species is founded upon a single mutilated specimen, the early 

 whorls and part of the body whorl being broken away. Shell is 

 large, fusiform, turrited, strongly axially and spirally sculptured, 



