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 zizyphinue, 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 

 lines; 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 o/" Aclis, Ebala, 

 Dunkeria, fyc. By Arthur Adams, F.L.S. &c. 



The genus Aclis of Loven should, I believe, be distributed into 

 four genera :— -Aclis, or those " cingulis elevatis acutis obducti ;" 

 Ebala 3 Gray, of which A, nitidissima is the type ; Hyala, II . & 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 Ebala, 

 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 Morch, which is founded on Scalaria 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 Isapis, H. & A. Adams, and 

 one of Cranopsis, A. Adams. 



Genus Aclis, Loven. 



Testa turrita, rimata ; anfractus numerosi, cingulis elevatis acutis ob- 

 ducti. Apertura ovalis. 



Aclis labiata, A. Adams. 



A. testa turrita, rimata, alba ; anfractibus 7i, 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. OffMino-Sima; 63 fathoms. 



Aclis cingulata, A. Adams. 



A. testa turrita, rimata, alba; anfractibus 6^, convexis, cingulis 

 duobus acutis prominentibus, tribus in anfa ctu ultimo, interstitiis 



