234 kINGICULIDH, SCAPHANDRID&®. 
The form of the lip and plicate columella suggest Cypreeacteon 
White (Contr. Paleont. Brazil, p. 176,in Archivos do Mus. Nac. do 
Rio de Janeiro, vii), but that Cretaceous fossil is a large form, with 
inflexed, crenulated outer lip and apical umbilicus. The Brazilian 
species, being an internal cast, no information is available on the 
sculpture of the shell. It is doubtful whether Cypreacteon is really 
a Tectibranch. Ovulacteon Dall Vol. xv, p. 178) has no columel- 
lar folds. 
P. parvus Hedley. PI. 74, fig. 7. 
Shell minute, white, solid, oblong, involute, spire buried, imper- 
forate at either extremity, the posterior of the inner portion of the 
last whorl obliquely sloped. Sculptured by about thirty spiral 
grooves, whose interstices are three times their breadth, and are cut 
by longitudinal strize into squarish facets. Aperture as long as the 
shell, vertical, contracted in the middle, expanded anteriorly and 
posteriorly, inner lip overlaid with callus; outer lip smooth, greatly 
thickened externally and internally, springing from a false umbili- 
cus in the vertex, arched higher than it, arcuate peripherally, curv- 
ing below the whorl up to the columella and chanelled at the junc- 
tion; anteriorly the columella bears a strong entering fold, posterior 
and parallel to which is a weaker one, and posterior to this again a 
small deeply-seated third fold is just distinguishable. Length 13, 
breadth 1 mill. Animal unknown. (Hedley). 
Manly, near Sydney, alive, at low tide on rocks, and dead in shell 
sand from Middle Harbor, Port Jackson, Australia. (A. U. Henn). 
P. parvus HEDLEY, l. ¢., p. 106, pl. 23, f. 1. 
Family SCAPHANDRID (Vol. xv, p. 242). 
Genus SCAPHANDER (Vol. xv, p. 244). 
S. aLatus Dall. PI. 74, Fig. 4. 
Shell pure white, with a pale straw-colored epidermis, polished, 
punctate, with a pervious axis; sculpture of faint lines of growth 
crossed by numerous fine rows of punctures, with wider, pretty regu- 
lar, interspaces; behind the pillar-lip a few of these rows are so im- 
pressed as to form grooves; form of the shell ovate, attenuated in 
the posterior third; aperture as long as the shell, narrow behind, 
rounded in front; outer lip sharp, produced behind the immersed 
spire in an alate manner; body with a thin wash of smooth pure 
