EAST AMERICAlSr SCAPHOPOD MOLLUSKS. 



133 



CADULUS (GADELA) MAYORI, new species. 



Plate 19, fig. 3. 



The shell is very small, moderately curved, with its section of maxi- 

 mum diameter at about the anterior two-fifths and which is marked 

 by a small bulbous swelling. In some specimens the equator is also 

 marked by a very obtuse angle though not sufficiently prominent to 

 impart to the shell that "dog-toothed" appearance so noticeable in 

 the species of the vulpidens group. The convex outline is rather 

 strongly arched, with a shght hump at the equator. The concave 

 outline is not quite straight, there being two slightly concave areas 

 before and after a decided convexity at the equator. The shell is 

 not flattened. The anterior aperture is oblique with a rounded 

 peristome. The apical orifice is about two-thirds as large, round, 

 and usually has a callous ring or two within the opening. Apical 

 features are apparently simple. Measurements are: 



Length, 4 mm.; diameter, 0.9 mm.; anterior aperture, 0.55 mm.; 

 apical aperture, 0.4 mm. (type). 



Length, 3.7 mm.; diameter, 0.8 mm.; anterior aperture, 0.5 mm.; 

 apical aperture, 0.3 mm. 



The type, Cat. No. 314783, U.S.N.M., was dredged at Eolis Station 

 33, east of Tortugas, in 16 fathoms, bottom of coral sand. The 

 general shape and facies of this little Cadulus strongly suggests 

 Cadulus sauridens, but it is persistently larger and seems to belong 

 geographically more strictly to the Floridian region. It is probably 

 of a somewhat lesser depth range. 



The following lots are in the National Museum collection: 



Locality. 



Remarks. 



Tortugas, Florida, Eolis Station 33 



do 



Off Key West, Florida, Eolis Station 42 



OIT Key West, Florida, Eolis Station 43 



Off Key West, Florida Eolis Station 73 



Miami, Florida, Eolis Station 48 



Miami, Florida, Eolis Station 49 



Miami, Florida, Eolis Station 68 



Miami, Florida, Eolis Station 69 



Miami, Florida, Eolis Station 87 



Miami, Florida, Eolis Station 117 



Miami, Florida, Eolis Station 140 



Miami, Florida, Eolis Station 311 



Off Fowev Light, Florida, Eolis Station 128 

 Off Fowev Light, Florida, Eolis Station 147 

 Off Fowey Light, Florida, Eolis Station 152 

 Off Fowey I-ight, Florida, Eolis Station 156 

 OIT Fowey Light, Florida, Eolis Station 167 



Fowey Light, Florida, Eolis Station 172 



Fowey Light, Horida, Eolis Station 179 



Fowey Light, Florida, Eolis Station 182 



Fowey Light, Florida, Eolis Station 186 



Fowey Light, Florida, Eolis Station 306 . . . . 



Fowey Light, Florida, Eolis Station 354 



Fowey Light, Florida, Eolis Station 356 



Fowey Light, Florida, Eolis Station 360 



Fowey Light, Florida, Eolis Station 364 



Ajax Reef, Florida, Eolis Station 368 



16 fms. (type). 



Do. 

 60 fms. 

 63 fms. 



60 fms. 

 30 fms. 

 45 fms. 

 38 fms. 

 63 fms. 

 35-38 fms. 

 65 fms. 

 75 fms. 

 60 fms. 

 35 fms. 

 40 fms. 

 47 fms. 

 65 fms. 

 55 fms. 

 701ms. 

 75 fms. 

 68 fms. 

 100 fms. 

 80 fms. 

 55 fms. 

 100 fms. 

 75-90 fms. 

 80-100 fms 



gn. m. 



