CADULUS-GADILA. 171 



Dentalium olivi Scacchi, Not. foss. Gravnia (Ann. Civ., 1835), p. 

 56, pi. 2, f. 6, a, b (so quoted by Jeffreys ; we have not seen the pub- 

 lication). 



? SlpJiodentalium hyalinum Brugnone, Misc. Malac, pt. 2, p. 21, 

 fig. 32 (1876), according to Jeffreys. 



Caclulus olivi Scacchi, Jeffreys, P. Z. S., 1882, p. 663; Ann. Mag. 

 N.H. (4),xix,p. 157; also (5), vi,p. 317. 



The specimen drawn and described is a Jeffreysian example from 

 the Sicilian Pliocene. The type locality is Gravnia, in southeastern 

 Italy. It is still somewhat doubtful whether the species has been 

 found living. Jeffreys certainly confused at least three species 

 under the name C. olivi at various times. We are disposed to be- 

 lieve that his '-olivi" with apical slits and a thickened rim around 

 the mouth belonged to some other species. He refers C. pandionis 

 to olivi as a synonym, but we do not think them identical. His 

 localities for recent specimens are : Flor'6, Norway (Norman) ; Bay 

 of Biscay ; Palermo (Monts.) ivest of Ireland, 1 ,230 fms. ; soidh of the 

 English Channel, 862 fms. (Porcupine Exped.). 



Siphodentalium hyalinum Brugnone, which Jeffreys refers to C 

 olivi as a synonym, is thus described : Shell short, rather broad, 

 cylindric; arcuate, thin, very smooth and very shining ; anterior 

 part obscurely attenuated ; aperture round, oblique ; apex broken. 

 Length 8 mill. Ficarazzi. This was described from one specimen 

 and seems a rather doubtful form. Brugnone's figure is reproduced 

 on pi. 33, fig. 61. 



C. PANDIONIS Verrill & Smith. PI. 25, fig. 63. 



Shell very large for the genus, white, transparent, very smooth 

 and polished, shining, strongly curved, largest in front of the mid- 

 dle, with the aperture oblique ; sculpture none, the shell is somewhat 

 transversely elliptical in section, slightly gibbose and most swollen 

 at about the anterior third, on the convex side ; from this point 

 gradually tapering to the slender posterior end and to the mouth, 

 which is slightly broader than high, and recedes considerably on the 

 convex side of the shell, with a thin, smooth margin. Posterior 

 opening small, with a semicircular notch above and below. Length 

 10, breadth 2*25, breadth of aperture 1'75, of anal aperture 0'40 mm. 

 (V.&S.) 



Soidh of Nantucket, east of New Jersey, at numerous stations near 

 Jf.O° N. lat., 85-500' fms. (Aibatr(jss). 



