r.n.i v. 



forated r falt>umbilicat6 above, rimatf beneath : smooth, -liii. 

 showing when strongly magnified, numerous verv weak growth- 

 striie ; toward the base there are some well-mark* !, -paced spiral 

 stria-. Aperture kidney-shaprd, as long as flu- shell: cohmiella 

 thick, arcuate, a little reflexed ; lip acute and arcuate ; color Mid- 

 hyaline white. (Dantz.). 



/'>'''), Azores, 1287 meters. 



liiif/ii ijmniel DAUT/... IJ's. Camp. Sci. Albert I, fasc. i, (' 

 Fauna Malac. des lies Azores, p. 24, pi. 1, f. 5r/., 1889. 



B. SEMIL.I:VIS (Jeftr.) Seguen/a. 



I have not access to the work containing a description and ti^nn- 

 of this species. 



Bay of Biscay (Jeffr.) ; Wed of Azores, 1000 fms. ; oft \ 

 Azores 450 fms., and off S<m Miyuel, Azores, 1000 fms. (Cliall.) ; 

 Middle Pliocene of Calabria (Seguenza). 



Bulla semilcevis JEFFREYS, Rep. Brit. Asso. Adv. Sci. 1880, p. 

 10, name only. SEGUENZA, Form. Terz. Calabria, in Mem. A cad. 

 di Lincei, Ser. 3, vi, p. 251, pi. xvi, f. 5. WATSON, Chall< 

 Gastr., p. 638. 



BULLA SUBROTUNDA Jeffreys (Rep. Brit. Asso. Adv. Sci.l87-T p. 

 113, name only. Monts., Bull.^Soc. ^lal. Ital. vi, p. 77). Off Jij- 

 eli, Algerian coast of Mediterranean ; also Atlantic, and fossil at 

 Ficarazzi. 



ft. KREBSII Dall. Unfigured. 



Shell nearly the form of B. occidentalis A. Adams, but n 

 cylindrical and of an ivory porcellanous white. The posterior 

 of the aperture is more sharp und the aperture near it narrower, 

 while on the columella there is a faint revolving ridge which sug- 

 gests a plait, though too obscure to be so named. The surface is 

 brilliantly polished, with perceptible incremental lines. Callus on 

 the body thin, with a very minute chink behind that on the pillar. 

 Apex deeply sunken, pervious, scalate, showing nearly tour volu- 

 tions, the margin of the vertex rounded, with faint indications of a 

 carinal line. Max. Ion. 8*0 ; max. lat. 5*0 mill. (Z>o//). 



Near Guadeloupe, in 7'>!' fms.. En^t from Tobayo, 880 fms. 



krel>.ii DALL, Blake Gastr., p. 56; Proc. U. S. Nat. Mus. 

 xii, 1889, p. 298. 



