Marine Mollusca from Japan. 497. 
rotundati, sequentes angulati, spiraliter obscurissime lirati, 
longitudinaliter costati, costis rotundatis, parum elevatis, ad 
angulum nodulosis, penultimus biangulatus; anfractus ultimus 
Convexus, obtusissime angulatus, costis fere obsoletis, liris 
spiralibus 5 nodulosis instructus, basim versus contractus ; 
apertura oblongo-ovata, intus pallide fusco tincta, plicato lirata ; 
labrum acutum, columella rectiuscula, levis, tenuiter callosa ; 
canalis brevis, levissime recurvus. 
Long. 11, maj. diam. 5 millim. 
Hab. Hachijojima Izu. 
This little shell is distinguished by the peculiar angularity 
of the upper whorls. The large irregular brown blotches 
are principally located in the space between the angle and 
the suture. ‘The surface of the shell between the ribs and 
nodules is rather smooth, exhibiting scarcely any sculpture. 
In the type specimen the nodules are only here and there 
spotted with brown, but some are more regularly spotted. 
Scalaria eusculpta, sp. n. 
Testa turrita, tenuis, alba, imperforata ; spira elongato-acuminata ; 
anfractus 11, convexi, primi 2 leves, ceteri spiraliter eximie 
lirati, costis circ. 16 reflexis, superne aculeatim productis in- 
structi; anfractus ultimus brevis, rotundatus; apertura ovato- 
subcircularis ; labrum extus reflexum, 
Long. 18, maj. diam. 7 millim. 
Hiab. Hirado Higen. 
A delicate elongately turreted species, with numerous thin 
reflexed ribs, which are aculeated near the suture. This is 
one of the few spirally lirate species of the group. The 
lire are quite distinct, though not very prominent. 
Having considered the arguments for the substitution of 
the name Scala for that of Scalaria, and especially the very 
interesting history given by Prof. W. H. Dall (Bull. Mus. 
Comp. Zool. xviii. no. 29, pt. 2, pp. 299-307), I am of 
opinion that of the two, the well-known name Scalaria has 
the best claim to recognition. I must certainly plead guilty 
to a charge of inconsistency, having myself somewhat in- 
advertently, and without due consideration, adopted the name 
Scala. 'There is no manner of doubt that, according to the 
strict laws of priority, the name Cyclostoma should be used 
for this genus; but it is generally agreed that the adoption 
of that name, which has so long been used for a group of 
operculate land-snails, would be too inconvenient and lead 
to much confusion. If, then, we allow that in such a case 
as this an exception to the rule may be admitted, I cannot 
see the propriety or utility of adopting the name given by 
