56 BUCCINID&. 
Genus, PURPURA—Aldrovandus. 
Shell oblong-oval, the last whorl large ; spire short ; aperture ovate 
large, with an oblique channel or groove at the fore part; columella 
flattened ; outer lip simple. 
P. haustrum, Martyn; Quoy, lc, ii. p. 554, pL 37,f- 4-8; Reeve, 
Conch. Ic. f. 6. Ovato-oblong, ventricose, spire depressed, rugose, spirally 
striated ; outer lip thin, wrinkled; columella hollowed, canal large ; 
brown, interior greyish white, with a broad band of brownish-purple on 
the right lip, and generally a spot of the same at the posterior end of the 
columella. 
Length, 3; breadth, 2; angle of spire, go’. 
Auckland to Dunedin, more common in the south. Chatham Islands. 
There is a variety in which the whole of the interior is yellow. 
For the dentition of this species see Zroschel, ‘‘Gebiss derSchnecken,” 
plivr2; 4 20. 
Genus, POLYTROPA—Swainson. 
Spire acuminate, whorls foliated or tuberculose ; inner lip flattened ; 
canal small, oblique ; aperture narrowed at the fore part. 
P, textiliosa, Zamark, lc, x., p.77; Reeve, Conch. Ic., f. 66. 
Shell ventricose, broadly spirally grooved, each groove with from one to 
four smaller raised ridges, the main ridges also with one or two small 
grooves ; finely transversely striated ; outer lip crenulated and grooved 
internally, margin thin; yellowish-white ; columella white ; inside yel- 
low, with a white band round the margin of the outer lip. 
Length, 2°9; breadth, 1°8; angle of spire, 73° to 95°. 
Auckland to Cook Strait. S. Australia. ‘Tasmania. 
P. succincta, Zamark,; Reeve, Conch. Ic. f. 23. Probably a 
variety of the last but the grooves much deeper, and without any smaller 
raised rigdes. 
Blind Bay (F.W.H). N.S. Wales. 
P. striata, Wartyn. P. rugosa, Lamark. FP. succincta var., Reeve. 
P. rupestris, H. and J. Voy. au Pole Sud., p. 89, pl. 22, f- 23. Shell 
ventricose, deeply and broadly spirally grooved, the grooves crossed by 
thin, rather distant, transverse lamella, which do not reach as high as 
the tops of the ridges ; ridges smooth ; outer lip crenulated and grooved, 
margin rather thick ; white or yellowish-white ; inside white, nacrous. 
Length, 2°3; breadth, 1°5 ; angle of spire, 68°. 
Chatham Islands. Auckland to Stewart Island. 
Auckland Islands. Kerguelen’s Land. S. Australia. 
P. squamata, Hutton; Jour. de Conch., 1878, p. 19. Ovato-acute, 
spire produced ; whorls narrowly, rather distantly, spirally grooved, 
rough with numerous thin imbricating transverse foliations ; outer lip 
crenulated and grooved; columella with one fold ; brownish-white ; 
interior purple, columella and a band round the mouth white or yellowish. 
