148 BULLETIlSr 111, UNITED STATES NATIONAL MITSEUM. 



Another lot consisting of but one very imperfect specimen, Cat . 

 No. 95447, U.S.N.M., from the U. S. B. F. Station 2760, off Ceara, 

 Brazil, in 1,019 fathoms, bottom of broken coral, temperature 39.5° 

 F. is probably this species. It has an extraordinarily thick and heavy 

 shell and possesses a decidedly carinate equator, thereby again sug- 

 gesting Jeffreys' C. tumidosus. 



Two more lots in the National Museum collection from the Gulf 

 Stream off Florida and Georgia are also included, thus indicating for 

 this species very extended geographical range. These are: Two 

 specimens. Cat. No. 108279, U.S.N.M., taken by the Albatross at the 

 U. S. B. F. Station 2415, off Georgia, in 440 fathoms, bottom of coarse 

 sand, shells, and foraminifera, temperature 45.6° F. ; and eight speci- 

 mens. Cat. No. 108172, U.S.N.M., from the U. S. B. F. Station 2668, 

 off Fernandina, Florida, in 294 fathoms, bottom of gray sand and 

 dead coral, temperature 46.3° F. 



The rather startling association of species from such divergent 

 stations as a thousand fathoms and a littoral one of 11| fathoms has 

 been already presented by other forms taken by the Albatross from 

 this same inshore haul, off the Rio de la Plata. Our very imperfect 

 knowledge of the faunal conditions of the mollusks of the southeast 

 coast of South America makes any explanation difficult. The cor- 

 rectness of the record is also to be questioned. 



CADULUS (CADULUS) PODAGRINUS, new species. 



Plate 20, fig. 5. 



The shell is small, much inflated, and suddenly contracting into a 

 short pinched-in dorso-ventrally flattened neck, terminating in an 

 oval-shaped apical orifice. The convex outline forms a strongly 

 curved arch from the point of contraction at the neck to the margin 

 of the very oblique anterior aperture. On the short "neck" itself the 

 same outline is actually concave. The "concave" outline is almost 

 straight with a wide convexity at the equator which is slightly post 

 median in position. Within the apical opening are callous rings. 

 The apical features are simple. 



The type is in the State University of Iowa collection. It meas- 

 ures — 4.5 mm.; diameter, 1.25 mm.; anterior aperture, 0.75 mm.; 

 apical aperture, 0.5 mm. It was dredged off English Harbor, An- 

 tigua, in 120 fathoms. 



The extreme shortness of the posterior portion and the sudden con- 

 traction of the bulbous swelling, along with the posterior position of 

 the equator, give to the shell a curiously humpbacked appearance. 

 Its nearest ally is Cadulus halius, from which it dift'ers in the humped 

 appearance given by the sudden constriction of the bulbous portion. 

 Both this and C. halius were taken in the same haul of the dredge, 

 but among a number of specimens of each there are no intermechates. 



