118 Mr. A. Adams on new Mollusca from Japan. 
been deservedly commemorated by its employment as a desig- 
nation for this most distinct and elegant little species, which, 
with the same sculpture, size, and general features as C. Lyonne- 
tianum, yet differs from it markedly in its exactly trochiform, 
shorter, or more broadly conical shape, with a flat or flattened 
base, sharp keel, shorter, less pyramidal, straighter-sided spire, 
and flatter volutions : resembling a miniature Trochus Niloticus 
or zizyphinus, L. The colour is, in one. example, pale straw, 
with spiral bands of dark fascicled hair-like lines; in another 
very dark brown, with narrow spiral yellowish- or greenish-white 
lies; and the third is uniform plain coffee-brown,—the flattened 
base, except the keel, being in all three of the latter colour. 
Lea Rectory, July 12, 1860. 
XXI.—Mollusta Japonica: New Species of Aclis, Kbala, 
Dunkeria, &c. By Artruur Apams,.F.L.8. &c. 
Tue genus Aclis of Lovén should, I believe, be distributed into 
four genera :+—Aclis, or those “ cingulis elevatis acutis obducti ;” 
Ebala, Gray, of which A. nitidissima is the type; Hyala, H. & A. 
Adams, of which A. unica is an example; and Dunkeria of Car- 
penter, which has cancellated whorls, and is neither an Aclis nor 
a Turbonilla. I here indicate four species of Aclis, two of Hbala, 
and three of Dunkeria, all of which I believe to be new. 
I add a notice of a very elegant little shell, which appears to 
me to be a subgenus of Scala, and different from the Aciona 
of Mérch, which is founded on Sealaria borealis, Beck (= S. 
Eschrichtii, Hold. & Moll. = S. undulata, Sow.), a species of 
which I obtained on the coast of Manchuria. I also add 
descriptions of a fourth species of Jsapis, H. & A. Adams, and 
one of Cranopsis, A. Adams. 
Genus Acuis, Lovén. 
Testa turrita, rimata; anfractus numerosi, cingulis elevatis acutis ob- 
ducti. Apertura ovalis. 
Aclis labiata, A. Adams. 
A, testa turrita, rimata, alba; anfractibus 7}, convexis, cingulis tri- 
bus acutis prominentibus, in anfractu ultimo quatuor, interstitiis 
simplicibus, profundis ; apertura ovali,.expansa ; labio simplici; 
labro expanso, antice subreflexo, margine integro, arcuato. 
Hab. Off Mino-Sima; 63 fathoms. 
Aclis cingulata, A. Adams. 
A. testa turrita, rimata, alba; anfractibus 63, convexis, cingulis 
duobus acutis prominentibus, tribus in anfa ctu ultimo, interstitiis 
