48 PROCEEDINGS OF THE NATIONAL MUSEUM vol. G6 



measures: Altitude 7.5 mm.; length of spire 2.7 mm.; lenirth of 

 aperture 4.2 mm. 



The new species very closel}^ resembles Strornbina chiriquiensis 01s- 

 son from the Gatun formation, Water Cay, Panama. It differs 

 mainly from that species in having weaker axials on the spire whorls. 

 Its closest ally among the Dominican fauna is Strornbina fseudohai- 

 tensis Maury, Cercado formation, but this species is larger, has heav- 

 ier radials on the spire and has a weak spiral ridge directly below 

 the suture. 



The new species is named in honor of G. P. Wall, a pioneer geolo- 

 gist in Trinidad. 



Occurrence. — Middle or lower Miocene: In flood-wash. Caroni 

 County, Montserrat AVard, 1 mile south of Brasso. 



Genus TYPHIS Montfort 



TYPHIS SAWKINSI, new species 



Plate 2, fig. 11 



Typhis li))f/uifcrus Maury (not of Dall), Bull. Amer. Paleont., vol. 10, no. 42, 

 p. 214, pi. 36, figs. 4, 5, 1925. Identification not certain. 



Shell small, solid, fusiform, strongly axially sculptured, with five 

 remaining whorls, tip broken off. Early whorls carinated, later 

 strongly shouldered below the suture. Axial sculpture of (four on 

 the penultimate whorl and five including the strong lip varix on the 

 body whorl) strong varices alternating with weaker axials bearing 

 at their summits moderately strong, protractive tubes. The varices 

 are very strong on the three anterior whorls, offset to the left at the 

 suture and overlap the preceding whorl, terminating at the base of 

 the intervarical tube and lying between the varix and the rib. Be- 

 tween the varices the deep recessed suture is revealed. Each varix 

 bears on its right margin and directly over the suture a short tube. 

 The intervarical ribs extend on the spire whorls from the shoulder 

 to the following suture, and on the last whorl to the base. A few 

 minute axial growth lines overrun the surface. Aperture elongate- 

 ovate, bordered by a raised rim. Anterior canal curved to the right 

 and on the left side strengthened by three anterior-converging 

 varices. 



Dimensions: Type (U.S. Nat. Mus. Cat. No. 352673) measures: 

 Altitude 15 mm.; greatest diameter 7.5 mm. 



This species recalls Typhis gabhi Brown and Pilsbry from the 

 Gatun formation, Panama, but that species possesses wrinkled and 

 pitted sculpture markings on the last whorl not seen on the new 

 species. The new species is named in honor of J. G. Sawkins, a 

 pioneer geologist in Trinidad. 



Occurrence. — Middle or lower Miocene: Guaico-Tamana Road, 2 

 cliains east of mile 13 from junction with Eastern Main Road. 



