152 Transactions.— Zoology. 
This fine species is not uncommon near Dunedin. It nearly always has 
obscure spiral grooves. In colour it is either horn-coloured, or irregularly 
marked, or flammulated with red. There is a variety with membraneous, 
deciduous ribs, which I suppose may be the P. portia of Gray. The den- 
tition of both is the same, and the membraneous ribs are easily removed. 
If I am right in identifying this ribbed variety with P. portia, then Dr. 
Gray’s name will stand for both. There is a mucous gland at the posterior 
end of the foot. 
Puacostyius Bovinus, Bruguiére. Jaw arcuate, attenuated at the ends; 
membranaceous, soft, transversely striated by infoldings of the membrane, 
giving the jaw the appearance of being composed of many pieces. (Fl. 
III., fig. 0.) ' 
Radula 17 inch in breadth, and length about two and a-half times as 
much, with about 140 transverse rows of teeth. These rows are nearly 
straight, forming a very obtuse angle salient posteriorly. (Pl. IV., fig. 5.) 
Teeth 55-1-55, of which 28 are laterals. The central tooth has a single 
cusp with rounded shoulders at its base; the cutting point is short and 
broad; the base of attachment broadens posteriorly and does not extend 
as far as the apex of the cutting point; the lateral teeth are bicuspid, with 
the outer cusp small; there is no cutting point on the interior cusp near the 
central tooth, but at about the twelfth row a small cutting point appears; 
this gets larger to No. 20, then smaller again, disappearing in the marginals 
altogether. At about the fortieth row the central cutting point disappears 
also. (Pl. IIL, fig. p.) 
The specimen from which the drawings were taken was given me by 
Professor T. Jeffery Parker, and had originally come from the north part of 
the Auckland district. Although there is considerable difference in the 
published descriptions of P. bovinus and P. novoseelandicus, I think that they 
are the same species, as nearly every specimen that I have examined com- 
bines characters of both. Usually they have the general form and colour 
described as characteristic of P. novoseelandicus, together with the seve? 
whorls and the cherry-red, mouth of P. bovinus. Although the shell has 
seven whorls, the animal has only three and a-half whorls. 
DaupEBARDIA NOVOSEELANDICA, Pfeiffer.(?) The animal has no locomo- 
tive disc, but a specimen long preserved in spirit showed a central longitu- 
dinal groove on the foot. There is no jaw. Teeth 15-0-15. There até 
about 35 transverse rows of teeth, which form an obtuse angle of about 
100°, salient posteriorly. (Pl. IV., fig. m.) The breadth of the radula 18 
‘16 inch, and its length about three times as much. Teeth aculeate, with 
a central process of attachment. The apices of the teeth belonging to the 
