EAST AMERICAN SCAPHOPOD MOLLUSKS. 



137 



stations, approximates very closely our species, but this is not the 

 C. jefreysi of Monterosato described from the Mediterranean. In 

 relation to the other species of the group so far considered, this is 

 relatively the stoutest and has the largest apical orifice. 

 The following lots are in the National Museum collection : 



1 Type. 

 CADULUS (GADILA) KEGULARIS. new species. 



Plate 19, fig. 14. 

 The shell is small, with a median equator, without a local swellmg, 

 round section; the anterior aperture is obhque; the apical orifice is 

 large, slightly flattened, but not constricted. The convex outline is 

 rather strongly arched, though not evenly so, its posterior portion 

 being straighter. The concave outline is almost a straight line, 

 modified by a convexity at the equator and a gentle concavity in its 

 anterior portion. The apical features are not distinct, but are 

 probably simple. 



The type, Cat. No. 330676 (a), U.S.N.M., measures— length, 4.25 

 mm.; diameter, 1.1 mm.; anterior aperture, 0.6 mm.; apical aper- 

 ture,' 0.5 mm. It is from the U. S. B. F. Station 2660, off Cape 

 Canaveral, Florida, in 504 fathoms, bottom of yellow forammifera, 

 temperature 45.7° F. There is in the collection another lot of one 

 specimen. Cat. No. 330675, U.S.N.M., from the same station; also 

 a lot of 50 specimens. Cat. No. 108278, U.S.N.M., from the U. S. B. F. 

 Station 2415, off Georgia in 440 fathoms, bottom of sand, tempera- 

 ture 45.6° F.; also a lot of 100 specimens. Cat. No. 108175, U.S.N.M., 

 from the U. S. B. F. Station 2668, off Fernandina, Florida, m 294 

 fathoms, bottom of sand, temperature 46.3° F. 



The shell is stouter than Cadulus atlanticus and larger than 6. 

 verrilli and C. transitorius. It is not quite bulbous enough to be in- 

 cluded under the subgenus Cadulus. In the many dredgmgs made 

 along the upper part of the continental shelf of eastern Florida, 

 between 100 and 200 fathoms, no specimens of this species have been 



CADULUS (GADILA) ATLANTICUS. new species. 



Plate 20, fig. 2. 

 1885. Cadulus jeffreysi, (?) Verrill, in Kept, of Com. of Fish and Fisheries for 



1883, p. 573 (not of Monterosato, 1875). 

 1889. Cadulus gradlis, Dall, Bull. Mas. Comp. ZooL, vol. 18, p. 432 (not ot 



Jeffreys, 1877). 



