328 KEPORT ON ALBATROSS MOLLUSCA DALL. 



as usual. The osphradmm also presents nothing unusual. The verge 

 is extremely long, slender, nearly cylindrical, situated on the right 

 side a little distauce behind the right tentacle; as contracted in 

 alcohol it was about 7 mm in length, tapering gently to a subcorneal 

 point, without papillae or appendages of any sort. The dentition re- 

 sembles that of G. Holbollii as figured by Loven, and the species 

 evidently belougs to the same section of the genus, though with a 

 more buccinoid shell than any of the others. The median tooth is a 

 wide, flat, arcuate, edentulous plate without anything resembling a 

 cusp. The laterals have the usual form and two rather rounded den- 

 ticles near the tip. 



The operculum recalls that of Nassa, but is rounded at the' corners 

 with an entire edge, the nucleus within the margin at the smaller end 

 and a lunate ridge of yellowish translucent callus bounding the scar 

 internally. 



A large number of specimens of this species were taken, living at the 

 locality indicated. All were more or less eroded at the tip and were 

 iucrusted with a scaly combination of calcareous matter and iron of a 

 rusty color. 



Section COLUMBELLA s. s. 

 Columbella mercatoria Lamarck. 

 Collected at the Abrolhos Islands. 



Section ANACHI8 Adams. 



Columbella Saintpairiana Caillet. 



Collected at Station 27(35, off the Riodela Plata, in 10-i fathoms, sand. 



Columbella Verrillii Dall. 



C. (Astyris?) Verrillii Dall, Bull. Mas. Comp. Zool., xvm, p. 192, PI. xix. Fig. 8. 



Collected at Station 275G, in 391 fathoms, sand, off the Para River, 

 Brazil. 



Section MTIDELLA Swainson. 



Columbella moleculina Duclos. 



Collected at Stations 2764 and 27G~>, off the Rio de la Plata, in 10A 

 fathoms, sand. 



Subgenus AESOPUS Gould. 



Aesopus Metcalfei (Reeve) Dall. 



Aesopits Metcalfei Dall, op. cit., xvm, p. 194, 1889. 

 Terebra Metcalfei Reeve. 



Collected at Station 27G4, off the Rio de la Plata, in 10i fathoms, sand. 

 It was previously known from Santo Domingo. 



