314 TROCHID A. 
tuberculate ; outer lip thickened and denticulated within. 6 sp. 
Indo-Pacific. 7. australis, Lam. (1xxxi, 58). 
CRASPEDOTUS, Phil. (Otavia, Gray. Olivia, Cantraine. Danilia, 
Brusina.) Shell subconoidal, not umbilicated; whorls convex, 
tuberculated in spiral series or cancellated ; columella twisted, 
forming a false umbilicus and presenting a strong tooth entering 
the aperture ; outer lip sillonated within, and having an external 
varix. 2sp. Mediterranean, N. Caledonia. 
EUCHELUS, Phil. (Aradasia, Gray.) Shell conoidal, turbinate, 
umbilicated ; whorls rounded with granulated revolving ribs ; 
columella lamellarly produced into a central tooth; outer lip 
thickened and crenulated within. Opercular whorls rather few, 
rapidly increasing. 11 sp. Indo-Pacific. J. canaliculatus 
(Ixxxi, 59). ; 
HUTTONIA, Kirk, 1882. Shell turbinated, subglobose ; perforate 
or imperforate ; columella with a deep notch at the anterior end; 
outer lip thickened and crenated internally. Distr.—3 sp. New 
Zealand. T. bella, Kirk. Distinguished from Euchelus. by 
having a deep notch instead of a small tooth on the front of the 
columella. 
PERRINIA, H. and A, Adams. Shell trochiform, with flattened, 
cancellated whorls ; aperture subquadrangular ; columella nearly 
straight, with a few posterior tubercles ; outer lip subcrenulated 
within. P. angulifera, Adams. 
CLANCULUS, Montfort. Shell conoidal or turbinated, not umbil- 
icated ; whorls mostly granulous; aperture contracted ; columella 
spirally twisted, forming a false umbilicus, plicated throughout 
and terminating in a multidentate varix; outer lip dentated 
within, with sometimes a larger superior tooth. 32 sp. Indo- 
Pacific, Mediterranean. 7’. puniceus, Phil. (ixxxi, 60°. 
CAMITIA, Gray. Shell depressed, polished, not umbilicated ; 
whorls rounded ; aperture transverse ; columella much twisted 
and produced anteriorly into a lamella, ending in a tooth ; outer 
lip smooth within. 7’ vitellinus, Gould (1xxxi, 61). 
LEUCORHYNCHIA, Crosse. Shell perforated, polished, few- 
whorled ; aperture rounded, not pearly ; basal margin callously 
produced across the base of the shell beyond the umbilicus, but 
without closing it. 7. Caledonica, Crosse (1xxxi, 71). 
OXYSTELE, Philippi. Shell depressed conoidal, smooth, mot 
umbilicated ; umbilical region covered by a shining callous expan- 
sion of the columella; columella flattened, curved anteriorly to 
join the outer lip. 5 sp. Australian seas. J. merula, Chemn. 
(Ixxxi, 62). 
ATAPHRUS, Gabb. Shell form of Oxystele, but the columellar 
lip anteriorly grooved, the groove terminating in a tubercle 
above. Cretaceous; North Carolina, California. 7. Kerrt,Gabb 
(1xxxi, 63). a ohNe: ‘peo 
