120 APLUSTRID&. 
FAMILY—APLUSTRID. 
Teeth, central none, laterals numerous, uniform. Head with the 
frontal disc produced into large ear-like tentacular lobes folded over the 
back of the shell, and furnished with bifid labial appendages ; eyes 
sessile at the inner bases of the tentacular lobes. Mantle with the 
inner margin thin and membranous, the outer forming a thick fleshy 
lobe, curving round the spire of the shell; branchial plume long and 
single. Foot large and membranous, auriculate in front, rounded 
behind. Operculum none. Shell external, involute, ornamented with 
coloured bands or markings ; aperture more or less channelled at the 
fore part. 
Genus, BULLINA—Ferussac, 
Shell ovate, solid ; axis perforated ; spire rather elevated ; whorls 
transversely grooved, with coloured markings; aperture longitudinal, 
broadly channelled in front ; inner lip thin, adnate to the body whorl ; 
columella arched forwards, and obliquely sub-truncate anteriorly ; outer 
lip grooved internally, and with the margin crenulated. 
The animal is not known. 
B. lineata, Wood, Ind. Test. Suppl., pl. 3; Reeve, Conch. Ic., f. 
2; Chenu, f. 2915. Shell sub-ovate, ventricose, yellowish or rosy- 
white, ornamented with two bright-red lines and others longitudinal, 
slightly waved distant, disjoined; spire obtuse, rather elevated ; colu- 
mella uniplicate, tortuous (Sowerby.) 
Hauraki Gulf (rare). Austrailia. 
FAMILY—CYLICHNID. 
Teeth, central none, lateral 6.6, the inner large and hooked, the 
outer small and uniform, rarely wanting. Head with the frontal dsc 
depressed, sub-quadrate, truncate in front, produced behind into broad, 
flattened, recumbent, tentacular lobes, with the eyes immersed in the 
front of their bases. Mantle with a posterior thickened process or lobe. 
Foot shorter than the shell, truncate in front. Operculum none.’ Shell 
external, spirally convoluted, more or less cylindrical, without coloured 
markings. 
Genus, CYLICHNA—Loven. 
Tentacular lobes connate, indistinct; .eyes sessile on their front 
bases ; mantle with a thick posterior lobe partially closing the aperture 
of the shell ; shell without spire, the apex concave ; aperture straight. 
C. striata, Hutton, C.M.AL, p. 52. Small, smooth, white, longi- 
tudinally fingly striated ; aperture scarcely produced above the spire. 
Length, ‘1 ; breadth, ‘os. 
Auckland. 
